Merck
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R4632

Sigma-Aldrich

Retinyl acetate

synthetic, crystalline solid or supercooled liquid

Synonym(s):
Retinol acetate, Vitamin A acetate
Empirical Formula (Hill Notation):
C22H32O2
CAS Number:
Molecular Weight:
328.49
Beilstein:
1915439
EC Number:
MDL number:
eCl@ss:
34058009
PubChem Substance ID:
NACRES:
NA.79

biological source

synthetic

Quality Level

assay

≥90% (HPLC)

form

crystalline solid or supercooled liquid

potency

2,600,000-2,940,000 I.U. per g

color

light yellow to dark yellow

mp

57-58 °C
~58 °C (lit.)

storage temp.

−20°C

SMILES string

CC1=C(/C=C/C(C)=C/C=C/C(C)=C/COC(C)=O)C(C)(C)CCC1

InChI

1S/C22H32O2/c1-17(9-7-10-18(2)14-16-24-20(4)23)12-13-21-19(3)11-8-15-22(21,5)6/h7,9-10,12-14H,8,11,15-16H2,1-6H3/b10-7+,13-12+,17-9+,18-14+

InChI key

QGNJRVVDBSJHIZ-QHLGVNSISA-N

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General description

Vitamin A usually occurs in food as retinyl esters, which are the pre-formed sources of vitamin A. Retinyl acetate exists as yellow crystals and is insoluble in water. It is soluble in ethanol and oils.

Application

Retinyl acetate has been used:
  • to study its effects on cochlear development in mice
  • as a component of an internal standard to quantify antioxidants in yolk
  • as an internal standard to determine serum retinol concentration

Packaging

1, 5, 25, 100 g in glass bottle

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.

Physical form

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

Analysis Note

Activity based on HPLC comparison to USP standard.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Chronic 4 - Repr. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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