Chalcones are 1,3-diphenyl-2-propene-1-one, in which two aromatic rings are linked by a three carbon ?,?-unsaturated carbonyl system. They have displayed a broad spectrum of biological activities. In this view it was proposed to synthesize some novel pyrazolines from chalcones. Chalcones are prepared by treating 2-acetyl-5-bromothiophene with different aromatic compounds. These chalcones on condensation with phenyl hydrazine HCl. pyridine as a catalyst gave 3-(5-bromothiphene-2yl)-1-phenyl-1H-pyrazole derivatives. The synthesized compounds have been characterized by their melting point, TLC, IR and 1H NMR spectral data. They have been screened for their antibacterial activity against Gram positive bacteria B.subtillis & B.pumilus and Gram negative bacteria E. coli & P.vulgaris and antifungal against A.niger & p.crysogenium .
{"title":"Synthesis and antimicrobial activity of chalcones and pyrazolines","authors":"R. Umadevi","doi":"10.7439/ijpc.v7i8.4348","DOIUrl":"https://doi.org/10.7439/ijpc.v7i8.4348","url":null,"abstract":"Chalcones are 1,3-diphenyl-2-propene-1-one, in which two aromatic rings are linked by a three carbon ?,?-unsaturated carbonyl system. They have displayed a broad spectrum of biological activities. In this view it was proposed to synthesize some novel pyrazolines from chalcones. Chalcones are prepared by treating 2-acetyl-5-bromothiophene with different aromatic compounds. These chalcones on condensation with phenyl hydrazine HCl. pyridine as a catalyst gave 3-(5-bromothiphene-2yl)-1-phenyl-1H-pyrazole derivatives. The synthesized compounds have been characterized by their melting point, TLC, IR and 1H NMR spectral data. They have been screened for their antibacterial activity against Gram positive bacteria B.subtillis & B.pumilus and Gram negative bacteria E. coli & P.vulgaris and antifungal against A.niger & p.crysogenium .","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"137 1","pages":"115-120"},"PeriodicalIF":0.0,"publicationDate":"2017-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77821721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objective: The objective of this research was to collect the throat swabs from symptomatic and asymptomatic children and microbiologically positive sample were further taken up for grouping. Methods: Extraction of streptococcal group antigen by various methods namely enzyme extraction, fullers extraction, Lancefield extraction. Comparing the antigen extraction methods in identifying the sero groups of BHS.Comparative studies between conventional and enzymatic methods of extraction. Which one is ideal method of extraction and which one is common among the children. Results: Throat swabs were collected in the age group of 5-12 both symptomatic and asymptomatic children. Symptomatic such as rashes, throat pain, fever, cold, cough etc. Totally 361 throat swabs were collected of which 19 were BHS.18 isolates were typeable and 1 was non typeable. In enzyme extraction is not effective in the extraction of group D streptococci may be extracted with mutanolysin only after 4H incubation although effective for the extraction of some strains of group D streptococci.in fullers extraction it was seen to give an important clue to the structure of cell wall of gram positive bacteria in lance field extraction was easily performed specific and sensitive method. Conclusion: Group A streptococcal isolates were just 2 in no which shows that group A is not the predominant strain in our study. There by denoting the prevalence of rheumatic fever and RHD are becoming less. There was no cross reaction among groups were lancefield and fullers method were applied.in enzymatic method there was slight cross reaction noted between A and D in one isolate,F and G in one isolate and C and G in another isolate.
{"title":"A comparative study of isolation, identification and grouping of streptococcal isolates from throat swabs of school going children applying different methods of extraction for antigen","authors":"S. Mohana, C. Sasikumar, S. Yasodha","doi":"10.7439/IJPC.V7I7.4249","DOIUrl":"https://doi.org/10.7439/IJPC.V7I7.4249","url":null,"abstract":"Objective: The objective of this research was to collect the throat swabs from symptomatic and asymptomatic children and microbiologically positive sample were further taken up for grouping. Methods: Extraction of streptococcal group antigen by various methods namely enzyme extraction, fullers extraction, Lancefield extraction. Comparing the antigen extraction methods in identifying the sero groups of BHS.Comparative studies between conventional and enzymatic methods of extraction. Which one is ideal method of extraction and which one is common among the children. Results: Throat swabs were collected in the age group of 5-12 both symptomatic and asymptomatic children. Symptomatic such as rashes, throat pain, fever, cold, cough etc. Totally 361 throat swabs were collected of which 19 were BHS.18 isolates were typeable and 1 was non typeable. In enzyme extraction is not effective in the extraction of group D streptococci may be extracted with mutanolysin only after 4H incubation although effective for the extraction of some strains of group D streptococci.in fullers extraction it was seen to give an important clue to the structure of cell wall of gram positive bacteria in lance field extraction was easily performed specific and sensitive method. Conclusion: Group A streptococcal isolates were just 2 in no which shows that group A is not the predominant strain in our study. There by denoting the prevalence of rheumatic fever and RHD are becoming less. There was no cross reaction among groups were lancefield and fullers method were applied.in enzymatic method there was slight cross reaction noted between A and D in one isolate,F and G in one isolate and C and G in another isolate.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"11 1","pages":"108-114"},"PeriodicalIF":0.0,"publicationDate":"2017-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84315025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Ravikumar, B. Ranganathan, S. Vinothkumar, S. Yamuna, P. Yasodha, P. Priyanka, R. V. Rasikaa, Y. Sownisha
Obesity is one of the major problems faced by many people all around the world. There are many ways to reduce it physically, but it needs some hardwork. Hydroxy citric acid (HCA) is the compound which is used to reduce weight. This compound is abundantly present in the fruits of Garcinia combogia . This is a type of tamarind which is cultivated in Srilanka and also in some parts of Malabar in India. The purity and yield of HCA varies between G. cambogia cultivated at different locations. It is very important to extract HCA with maximum purity and with higher yield to benefit the mankind. Hence, in the present research work, HCA was extracted from G. combogia cultivated at two different location of Malabar and Srilanka and compared their elements and purity using HPLC and FTIR. The purity of HCA extracted from G. combogia cultivated at Malabar was found to be higher of about 50.95% in comparison with HCA extracted from G. combogia cultivated at Srilanka which was 41.16%.
{"title":"Extraction and characterization of Hydroxy Citric Acid from Garcinia combogia cultivated at two different locations of Malabar and Srilanka","authors":"R. Ravikumar, B. Ranganathan, S. Vinothkumar, S. Yamuna, P. Yasodha, P. Priyanka, R. V. Rasikaa, Y. Sownisha","doi":"10.7439/IJPC.V7I7.4298","DOIUrl":"https://doi.org/10.7439/IJPC.V7I7.4298","url":null,"abstract":"Obesity is one of the major problems faced by many people all around the world. There are many ways to reduce it physically, but it needs some hardwork. Hydroxy citric acid (HCA) is the compound which is used to reduce weight. This compound is abundantly present in the fruits of Garcinia combogia . This is a type of tamarind which is cultivated in Srilanka and also in some parts of Malabar in India. The purity and yield of HCA varies between G. cambogia cultivated at different locations. It is very important to extract HCA with maximum purity and with higher yield to benefit the mankind. Hence, in the present research work, HCA was extracted from G. combogia cultivated at two different location of Malabar and Srilanka and compared their elements and purity using HPLC and FTIR. The purity of HCA extracted from G. combogia cultivated at Malabar was found to be higher of about 50.95% in comparison with HCA extracted from G. combogia cultivated at Srilanka which was 41.16%.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"17 1","pages":"100-102"},"PeriodicalIF":0.0,"publicationDate":"2017-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88281526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Masoud Soheili, Farzaneh Khalaji, M. Mirhashemi, M. Salami
Alzheimer’s disease (AD) is a progressive neurological disorder associated with cognitive and memory deficits. Accumulation of amyloid beta (Aβ) plaques is one of the major causes of AD. Therefore, inhibition of the plaque formation has been aimed to play a preventive role in the disease. Lavender, through some neuroprotective roles such as antioxidant effects, is known to be an effective candidate in treatment of neurodegenerative disorders. In this study using Thioflavin T Measurement and Atomic Force Microscope (AFM) Imaging we evaluated effect of essential oil of lavender on Aβ polymerization.Thioflavin T Method showed that the essential oil enhances the Aβ aggregation. The results of AFM method also confirmed it. Our data antagonizes previous results indicating clearing effect of aqueous extract of lavender on Aβ plaque. It seems that the different combination of essential oil and aqueous extract considerably determines if or not the aggregation occurs.
{"title":"The effect of essential oil of Lavandula angustifolia on amyloid beta polymerization: An in vitro study","authors":"Masoud Soheili, Farzaneh Khalaji, M. Mirhashemi, M. Salami","doi":"10.7439/IJPC.V7I7.4085","DOIUrl":"https://doi.org/10.7439/IJPC.V7I7.4085","url":null,"abstract":"Alzheimer’s disease (AD) is a progressive neurological disorder associated with cognitive and memory deficits. Accumulation of amyloid beta (Aβ) plaques is one of the major causes of AD. Therefore, inhibition of the plaque formation has been aimed to play a preventive role in the disease. Lavender, through some neuroprotective roles such as antioxidant effects, is known to be an effective candidate in treatment of neurodegenerative disorders. In this study using Thioflavin T Measurement and Atomic Force Microscope (AFM) Imaging we evaluated effect of essential oil of lavender on Aβ polymerization.Thioflavin T Method showed that the essential oil enhances the Aβ aggregation. The results of AFM method also confirmed it. Our data antagonizes previous results indicating clearing effect of aqueous extract of lavender on Aβ plaque. It seems that the different combination of essential oil and aqueous extract considerably determines if or not the aggregation occurs.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"4 1","pages":"103-107"},"PeriodicalIF":0.0,"publicationDate":"2017-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90984607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A novel and simple reverse phase liquid chromatographic method has been established for the determination of Sitagliptin and Metformin HCl and studies its degradation pattern in pharmaceutical dosage forms. Sitagliptin and Metformin HCl is used to control Type 2 Diabetes. The proposed work was performed on Younglin( S.K) isocratic System UV DetectorC18 column (150 mm 4.6 mm). A mixture of Potassium Phosphate buffer pH-3.2 with orthophosphoric acid and acetonitrile was used as mobile phase in this method with flow rate 0.7 ml/min (UV detection at 203 nm) and the method was validated as per ICH guidelines. Forced degradation studies were performed by exposing the drug Sitagliptin and Metformin HCl to acidic, alkaline, oxidation and thermal stress degradations. The proposed RP-HPLC method was found to be robust and specific and this method is suitable for the assay of pharmaceutical dosage forms as well as kinetic studies.
建立了一种新型、简便的反相液相色谱法测定西格列汀和盐酸二甲双胍，并研究了其在药物剂型中的降解规律。西格列汀和盐酸二甲双胍用于控制2型糖尿病。所提出的工作在Younglin(S.K)等温系统UV DetectorC18柱(150 mm 4.6 mm)上进行。以磷酸钾缓冲液pH-3.2与正磷酸和乙腈的混合物为流动相，流速0.7 ml/min (203nm紫外检测)，按照ICH指南进行验证。通过将西格列汀和盐酸二甲双胍暴露于酸性、碱性、氧化和热应激降解中，进行了强制降解研究。所建立的反相高效液相色谱法具有较好的鲁棒性和特异性，适用于药物剂型的测定和动力学研究。
{"title":"Application of Validated HPLC Method for Degradation Study of Vildagliptin and Metformin HCl","authors":"I. Sheikh, M. Charde, R. Chakole","doi":"10.7439/IJAPA.V7I2.4375","DOIUrl":"https://doi.org/10.7439/IJAPA.V7I2.4375","url":null,"abstract":"A novel and simple reverse phase liquid chromatographic method has been established for the determination of Sitagliptin and Metformin HCl and studies its degradation pattern in pharmaceutical dosage forms. Sitagliptin and Metformin HCl is used to control Type 2 Diabetes. The proposed work was performed on Younglin( S.K) isocratic System UV DetectorC18 column (150 mm 4.6 mm). A mixture of Potassium Phosphate buffer pH-3.2 with orthophosphoric acid and acetonitrile was used as mobile phase in this method with flow rate 0.7 ml/min (UV detection at 203 nm) and the method was validated as per ICH guidelines. Forced degradation studies were performed by exposing the drug Sitagliptin and Metformin HCl to acidic, alkaline, oxidation and thermal stress degradations. The proposed RP-HPLC method was found to be robust and specific and this method is suitable for the assay of pharmaceutical dosage forms as well as kinetic studies.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"315 1","pages":"139-143"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76508841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Boerhavia diffusa is an important herbal ingredient of several Ayurvedic and Unani formulations and it is commonly called as Punarnava in Indian system of medicine. But, this plant is often confused with Boerhavia erecta due to morphological similarity and also being adulterated in Indian herbal market. In order to differentiate these plant drugs, in the present work we have developed chemical fingerprints through phytochemical analysis, UV-Visible, FT-IR & NMR spectroscopy, HPTLC and HPLC chromatography. Phytochemical analysis of methanolic extract of investigated materials showed that B. diffusa contained higher level of total phenolic compounds (339.40 mg GAE / 100 g) when compared to B. erecta (269.87 mg GAE / 100 g). Scanning in UV-Visible spectroscopy exhibited maximum absorption at 212, 362, 428 & 663 nm for B. diffusa while B. erecta showed peaks at 214, 308, 349, 532 & 663 nm. Similarly, FT-IR spectroscopy of raw materials indicated notable difference between the samples at 400 – 1000 cm -1 region. NMR spectroscopy illustrated remarkable difference between the chloroform extract of selected samples at 1-3 ppm region. HPTLC profile of methanolic extract of B. diffusa exhibited a total number of 9 peaks while B. erecta showed 12 number of peaks. Chemical profile investigated in the present study will be helpful to differentiate B. diffusa from B. erecta and also useful to prevent their adulteration in herbal industry.
{"title":"Phytochemical investigation for the authentication of Indian traditional herbal drug Boerhavia diffusa and its differentiation from morphologically similar plant B. erecta","authors":"V. Vadivel, P. Brindha","doi":"10.7439/IJPC.V7I6.4244","DOIUrl":"https://doi.org/10.7439/IJPC.V7I6.4244","url":null,"abstract":"Boerhavia diffusa is an important herbal ingredient of several Ayurvedic and Unani formulations and it is commonly called as Punarnava in Indian system of medicine. But, this plant is often confused with Boerhavia erecta due to morphological similarity and also being adulterated in Indian herbal market. In order to differentiate these plant drugs, in the present work we have developed chemical fingerprints through phytochemical analysis, UV-Visible, FT-IR & NMR spectroscopy, HPTLC and HPLC chromatography. Phytochemical analysis of methanolic extract of investigated materials showed that B. diffusa contained higher level of total phenolic compounds (339.40 mg GAE / 100 g) when compared to B. erecta (269.87 mg GAE / 100 g). Scanning in UV-Visible spectroscopy exhibited maximum absorption at 212, 362, 428 & 663 nm for B. diffusa while B. erecta showed peaks at 214, 308, 349, 532 & 663 nm. Similarly, FT-IR spectroscopy of raw materials indicated notable difference between the samples at 400 – 1000 cm -1 region. NMR spectroscopy illustrated remarkable difference between the chloroform extract of selected samples at 1-3 ppm region. HPTLC profile of methanolic extract of B. diffusa exhibited a total number of 9 peaks while B. erecta showed 12 number of peaks. Chemical profile investigated in the present study will be helpful to differentiate B. diffusa from B. erecta and also useful to prevent their adulteration in herbal industry.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"11 1","pages":"86-94"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86997173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Pal, Arvind Kumar, Sonu, B. Parveen, S. Praveen
A series of substituted amide derivatives of Sulphonamides were synthesized, and their anticonvulsant activity and antimicrobial activity were evaluated which include the MES model and by Cup-plate method. However, further studies need to be carried out to ascertain the precise mechanism of action of anticonvulsant activity of these molecules. The compounds.N-(4-Acetylsulfamoyl-phenyl)-4-(4-chloro-3-methyl-phenyl)-4-oxo-butyramide (HP-1) showed significant anticonvulsant activity. Some compounds show the good antibacterial activity against Escherichia coli. The Compound 4-(4-chloro-3-methyl-phenyl)-4-oxo-N-(4-sulfamoyl-phenyl)-butyramide (HP-2) and 4-(4-Methoxy-phenyl)-4-oxo-N-(4-Sulfomoyl-Phenyl-)butyramide(HP-3) showed significant inhibitory characteristics with stronger antimicrobial activity against MTCC-521 gram(-)ve bacteria.
合成了一系列磺胺类取代酰胺衍生物，并采用MES模型和杯盘法对其抗惊厥活性和抗菌活性进行了评价。然而，需要进一步的研究来确定这些分子抗惊厥活性的确切作用机制。化合物n -(4-乙酰氨基甲酰苯基)-4-(4-氯-3-甲基苯基)-4-氧-丁酰胺(HP-1)具有显著的抗惊厥活性。部分化合物对大肠杆菌具有良好的抑菌活性。化合物4-(4-氯-3-甲基苯基)-4-氧- n -(4-磺酰基苯基)-丁酰胺(HP-2)和4-(4-甲氧基苯基)-4-氧- n -(4-磺酰基苯基)丁酰胺(HP-3)对MTCC-521 g (-)ve细菌具有较强的抑菌活性。
{"title":"Synthesis and biological Evaluation of some new Amide Derivatives of Sulphonamide","authors":"H. Pal, Arvind Kumar, Sonu, B. Parveen, S. Praveen","doi":"10.7439/IJPC.V7I6.4196","DOIUrl":"https://doi.org/10.7439/IJPC.V7I6.4196","url":null,"abstract":"A series of substituted amide derivatives of Sulphonamides were synthesized, and their anticonvulsant activity and antimicrobial activity were evaluated which include the MES model and by Cup-plate method. However, further studies need to be carried out to ascertain the precise mechanism of action of anticonvulsant activity of these molecules. The compounds.N-(4-Acetylsulfamoyl-phenyl)-4-(4-chloro-3-methyl-phenyl)-4-oxo-butyramide (HP-1) showed significant anticonvulsant activity. Some compounds show the good antibacterial activity against Escherichia coli. The Compound 4-(4-chloro-3-methyl-phenyl)-4-oxo-N-(4-sulfamoyl-phenyl)-butyramide (HP-2) and 4-(4-Methoxy-phenyl)-4-oxo-N-(4-Sulfomoyl-Phenyl-)butyramide(HP-3) showed significant inhibitory characteristics with stronger antimicrobial activity against MTCC-521 gram(-)ve bacteria.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"15 1","pages":"80-85"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75221112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Praveen, Arvind Kumar, B. Parveen, Sonu, H. Pal
A series of substituted 1,2,4-Triazole derivatives were synthesized, and their anticonvulsant activity and antimicrobial activity were evaluated which include the MES model and by Cup-plate method. However, further studies need to be carried out to ascertain the precise mechanism of action of anticonvulsant activity of these molecules. The compounds 4-[1-(2-Bromo-phenyl)-ethylideneamino]-5-pyridin-3-yl-2,4-dihydro[1, 2, 4] triazole-3-thione (SB-1) and 4-[1-(4-Fluoro-phenyl)-ethylideneamino]-5-pyridin-3-yl-2,4-dihydro[1, 2, 4] triazole-3-thione (SB-2) showed significant anticonvulsant activity and antibacterial activity against Escherichia coli.
{"title":"Synthesis And Biological Evaluation of Some New Schiff base 1,2,4-Triazole Derivatives","authors":"S. Praveen, Arvind Kumar, B. Parveen, Sonu, H. Pal","doi":"10.7439/IJPC.V7I6.4213","DOIUrl":"https://doi.org/10.7439/IJPC.V7I6.4213","url":null,"abstract":"A series of substituted 1,2,4-Triazole derivatives were synthesized, and their anticonvulsant activity and antimicrobial activity were evaluated which include the MES model and by Cup-plate method. However, further studies need to be carried out to ascertain the precise mechanism of action of anticonvulsant activity of these molecules. The compounds 4-[1-(2-Bromo-phenyl)-ethylideneamino]-5-pyridin-3-yl-2,4-dihydro[1, 2, 4] triazole-3-thione (SB-1) and 4-[1-(4-Fluoro-phenyl)-ethylideneamino]-5-pyridin-3-yl-2,4-dihydro[1, 2, 4] triazole-3-thione (SB-2) showed significant anticonvulsant activity and antibacterial activity against Escherichia coli.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"61 1","pages":"95-99"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80725195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A simple, cost effective spectrophotometric method has been developed for the simultaneous determination of paracetamol (PAR) and chlorzoxazone (CHL) in bulk and dosage forms. The method permits data to be taken at multiple wavelengths to generate linear plots, from which the concentrations can be determined. The absorbance values of the two analytes were linear with the concentration at the wavelengths taken at 10 nm interval over the range of 230 -300 nm. The accuracy and the precision of the developed method were very good (RSD ? 2%). The validity of the proposed method was confirmed through the statistical comparison of the obtained data with those obtained by a reference method utilizing H-point for the determination of the two actives.
{"title":"Multi-wavelength Spectrophotometric Determination of Chlorzoxazone and Paracetamol in Bulk and Capsules","authors":"Imad Osman Abu Reid, Abdelrahman Mohamed Tageldin","doi":"10.7439/IJAPA.V7I2.4161","DOIUrl":"https://doi.org/10.7439/IJAPA.V7I2.4161","url":null,"abstract":"A simple, cost effective spectrophotometric method has been developed for the simultaneous determination of paracetamol (PAR) and chlorzoxazone (CHL) in bulk and dosage forms. The method permits data to be taken at multiple wavelengths to generate linear plots, from which the concentrations can be determined. The absorbance values of the two analytes were linear with the concentration at the wavelengths taken at 10 nm interval over the range of 230 -300 nm. The accuracy and the precision of the developed method were very good (RSD ? 2%). The validity of the proposed method was confirmed through the statistical comparison of the obtained data with those obtained by a reference method utilizing H-point for the determination of the two actives.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"81 1","pages":"16-20"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90087066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francine Regina Zachow Philippsen, Brunna Ricci Falcao, L. Teixeira, T. R. Sausen
The present study describes the development and validation of a dissolution method for tadalafil, a Biopharmaceutical Classification System class II drug. 0.1 N hydrochloric acid (HCl)+0.5% sodium lauryl sulphate (SLS), pH 4.5-acetate buffer+0.5% SLS and pH 6.8phosphate buffer+0.5% SLS were tested as dissolution medium, and influences of apparatus, and rotation speed were evaluated. Samples were analyzed by UV spectrophotometric method at 225 nm. The results also shows a better dissolution profile using pH 6.8phosphate buffer + 0.5% SLS as medium and paddle as apparatus is a speed of 100 rpm. The conditions that allowed dissolution determination were USP type II apparatus at 100 rpm, containing 900 mL of pH 6.8phosphate buffer+0.5% SLS as dissolution medium, with analysis at wavelength of 225 nm. Samples were analyzed by UV spectrophotometric method and validated as per ICH guidelines, showing specificity, linearity, precision and accuracy.
{"title":"Development and validation of a dissolution method for a BCS class IV drug tadalafil","authors":"Francine Regina Zachow Philippsen, Brunna Ricci Falcao, L. Teixeira, T. R. Sausen","doi":"10.7439/IJAPA.V7I2.4155","DOIUrl":"https://doi.org/10.7439/IJAPA.V7I2.4155","url":null,"abstract":"The present study describes the development and validation of a dissolution method for tadalafil, a Biopharmaceutical Classification System class II drug. 0.1 N hydrochloric acid (HCl)+0.5% sodium lauryl sulphate (SLS), pH 4.5-acetate buffer+0.5% SLS and pH 6.8phosphate buffer+0.5% SLS were tested as dissolution medium, and influences of apparatus, and rotation speed were evaluated. Samples were analyzed by UV spectrophotometric method at 225 nm. The results also shows a better dissolution profile using pH 6.8phosphate buffer + 0.5% SLS as medium and paddle as apparatus is a speed of 100 rpm. The conditions that allowed dissolution determination were USP type II apparatus at 100 rpm, containing 900 mL of pH 6.8phosphate buffer+0.5% SLS as dissolution medium, with analysis at wavelength of 225 nm. Samples were analyzed by UV spectrophotometric method and validated as per ICH guidelines, showing specificity, linearity, precision and accuracy.","PeriodicalId":14317,"journal":{"name":"International Journal of Pharmaceutical Chemistry","volume":"49 4 1","pages":"10-15"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77803319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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