R4632 Sigma

Retinyl acetate

synthetic, crystalline solid or supercooled liquid

Synonym: Retinol acetate, Vitamin A acetate

Properties

Related Categories Cell Biology, Nutrition Research, Vitamin A, Vitamins
biological source   synthetic
form   crystalline solid or supercooled liquid
potency   2,600,000-2,940,000 I.U. per g
mp   57-58 °C
  ~58 °C(lit.)
storage temp.   −20°C

Description

Analysis Note

Activity based on HPLC comparison to USP standard.

Packaging

1, 5, 25, 100 g in glass bottle

Physical form

Packaged as a melt and may exist as a crystalline solid or a supercooled viscous liquid

Biochem/physiol Actions

Retinal, retinol and retinoic acid are the aldehyde, alcohol and acid forms of vitamin A. The retinoids exist as many geometric isomers due to the unsaturated bonds in the aliphatic chain.
Retinoids also exist as retinyl esters such as retinyl propionate, retinyl acetate and retinyl palmitate. Retinyl esters provide pools of vitamin A that are converted into retinol and other retinoids as needed. Retinyl acetate is used in a wide range of biological applications.

Price and Availability

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Retinyl acetate

synthetic, matrix dispersion, 475,000-650,000 USP units/g

Retinyl palmitate

Type IV, ~1,800,000 USP units/g, oil

Vitamin A (acetate)

meets USP testing specifications

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