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维生素A

CAS No.: 68-26-8

Other Names: Vitamin A acetate

Molecular formula: C22H32O2

EINECS No.: 200-683-7

详情介绍

Product performanceNHU, ZMC, KingDomway, BASF, DSM

Vitamin A is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids, among which beta-carotene is the most important. Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision.


Vitamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the light-absorbing molecule, that is necessary for both low-light (scotopic vision) and color vision. Vitamin A also functions in a very different role as an irreversibly oxidized form of retinol known as retinoic acid, which is an important hormone-like growth factor for epithelial and other cells. 


Synonym: Vitamin A, retinyl acetate, vitamin a acetate all-(E)-3,7-dimethyl-9-2,6,6-trimethyl-1-cyclohex-1-enyl)2,4,6,8-nona tetraene-1-yl Acetate.

Testing   Item

Standard

Result

Assay

≥   1000000IU/g

1070000IU/g

Appearance

Brownish yellow to   Brownish microcapsule

Brownish yellow to   Brownish microcapsule

Absorbance   radio

≥   0.85

0.87

Heavy   metal (Pb)/%

≤   10mg/kg

0.001

arsenic/%

≤   2mk/kg

0.0002


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