Ergocalciferol Reference Standard (Control 901) of the National Institute of Hygienic Sciences
Kakehi, H.; Komatsu, H.; Murai, M.; Ishimitsu, S.; Okada, S.
Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences 1991(109): 139-142
1991
ISSN/ISBN: 0077-4715 PMID: 1364380 Document Number: 381147
Ergocalciferol Reference Standard for the Japanese Pharmacopoeia (JP RS) was prepared. The following analytical data were obtained: melting point 118.4 degrees C; UV and IR spectra were in agreement with both of the previous JP RS and USP RS of ergocalciferol; absorptivity at 265nm E1%lcm = 467; optical rotation ɑ20D = 103 degrees; no impurities were detected by TLC and HPLC analyses; assay 100.1% by HPLC against the USP RS. Based on the above results, the raw material was authorized as the Reference Standard of the National Institute of Hygienic Sciences.