维生素A、C、D3杂质 标准品 对照品

维生素A、C、D3标准品列表

名称结构式

5,6-trans-Vitamin D3

Cholecalciferol Impurity A (5,6-

trans-Cholecalciferol, 5,6-trans-

Vitamin D3)

(3β)-7-Dehydro Cholesterol

Cholecalciferol Imp. B (EP)

Lumisterol 3

Isotachysterol3

Tachysterol3

Vitamin A Impurity A (Diels-Alder Dimers)

Kitol

Vitamin A Impurity B (Anhydro-Vitamin A)

all-trans-Anhydro Retinol (90%)

Vitamin A Impurity C (retro-Vitamin A)

all-trans-Retro Retinol

Furfural

5-Hydroxymethyl-2-furaldehyde Ascorbic acid impurity C Ascorbic acid impurity D

草酸

Oxalic acid

Ascorbic Acid Impurity F Sodium

Salt

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D(-​)​-​I soascorbic Acid (Erythorbic

Acid)

Ascorbic Acid EP Impurity G

L-threo-Hex-​2-​e naric acid 1,​4-

Lactone

Ascorbic Acid EP Impurity H

L-threo-Hex-​2-​e naric acid 1,​4-Lactone 6-Methyl Ester