[Epitiostanol Reference Standard (Control 891) of National Institute of Hygienic Sciences].
The raw material of epitiostanol was examined for preparation of "Epitiostanol Reference Standard". Analytical results for the sample were as follows: melting point 130.7 degrees C (decomposition); UV spectrum indicates absorption maximum at 263 nm in ethanol; IR spectrum indicates specific absorption at 2920, 1383, 1056 and 590 cm-1; optical rotation [alpha]20D+ 24.4 degrees; no impurity was found by TLC, but a small amount of one was found by HPLC analysis and the purity is assumed to be 99.5%; water content 1.52%. Based on the results, the present raw material was authorized to be the Reference Standard of the National Institute of Hygienic Sciences.
Okada
S
S
Izumi
W
W
Murai
M
M
Komatsu
H
H
Ishimitsu
S
S
D000732:Androstanols / Q000302:isolation & purification / Q000592:standards*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D006077:Government Agencies; D006920:Hygiene; D007564:Japan; D010602:Pharmacopoeias as Topic
D000732:Androstanols; C002976:epitiostanol