[Ergocalciferol reference standard (Control 941) of the National Institute of Health Sciences].

Abstract

The raw material for ergocalciferol was tested for preparation of the "Ergocalciferol Reference Standard (Control 941)". Analytical data obtained were as follows: melting point, 117.6 degrees C; UV and infrared spectra, the same as those for JP Cholecalciferol Reference Standard; specific absorbance, E1%1cm = 458 (265 nm); thin-layer chromatography and high-performance liquid chromatography (HPLC), no impurities were detected, respectively; assay, 100.6% by HPLC. Based on the above results, the candidate raw material was authorized as the Japanese Pharmacopoeia Reference Standard (Control 941).