[Tocopherol Reference Standard (Control 001) of National Institute of Health Sciences].
The raw material of tocopherol was tested for the preparation of "Tocopherol Reference Standard (Control 991)". Analytical data obtained were: IR spectrum, same as the Tocopherol Reference Standard (Control 941); specific absorbance, E/cm% (292 nm) = 72.9; thin-layer chromatography, no impurities were detected until 50.0 micrograms; high-performance liquid chromatography (HPLC), trace amounts of five impurities were detected and the total amount was estimated to be less than 1.4%; assay by HPLC, 99.9%. Based on the above results, the raw material was authorized as the Japanese Pharmacopoeia Standard (Control 991).
Iwata
M
M
Koide
T
T
Maekawa
K
K
Saito
H
H
Tanimoto
T
T
Okada
S
S
D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D006077:Government Agencies; D007564:Japan; D010602:Pharmacopoeias as Topic; D012015:Reference Standards; D024505:Tocopherols / Q000032:analysis / Q000592:standards*
D024505:Tocopherols