title: [Ergocalciferol Reference Standard (Control 971) of National Institute of Health Sciences].
abstract: The raw material for ergocalciferol was examined for preparation of the "Ergocalciferol Reference Standard (Control 971)". Analytical data obtained were as follows: melting point, 116.7 degrees C; UV and infrared spectra, the same as those for JP Cholecalciferol Reference Standard; specific absorbance, E1 cm 1% = 461(265 nm); optical rotation, [alpha]D20 = +102.5 degrees; thin-layer chromatography and high-performance liquid chromatography (HPLC), no impurity was detected; assay, 102.4% by HPLC. Based on the above results, the raw material was authorized as the Ergocalciferol Reference Standard (Control 971) of National Institute of Health Sciences.
authors: M
authors: M
authors: Iwata
authors: A
authors: A
authors: Kitajima
authors: K
authors: K
authors: Maekawa
authors: H
authors: H
authors: Saito
authors: T
authors: T
authors: Tanimoto
authors: S
authors: S
authors: Okada
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004872:Ergocalciferols / Q000032:analysis / Q000592:standards*; D006077:Government Agencies; D007564:Japan; D012015:Reference Standards
chemical_list: D004872:Ergocalciferols