[Ergocalciferol Reference Standard (Control 971) of National Institute of Health Sciences].
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.
Iwata
M
M
Kitajima
A
A
Maekawa
K
K
Saito
H
H
Tanimoto
T
T
Okada
S
S
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004872:Ergocalciferols / Q000032:analysis / Q000592:standards*; D006077:Government Agencies; D007564:Japan; D012015:Reference Standards
D004872:Ergocalciferols