Retinyl acetate

Retinyl acetate
Names
	IUPAC name (2E,4E,6E,8E)-3,7-Dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraen-1-yl acetate
	Other names Retinol acetate; Vitamin A acetate; Vitamin A1 acetate; Acetylretinol; all-trans-Retinol acetate; all-trans-Retinyl acetate; all-trans-Vitamin A acetate;
Identifiers
CAS Number	127-47-9 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1915439
ChEBI	CHEBI:32095;
ChEMBL	ChEMBL486193;
ChemSpider	553599;
ECHA InfoCard	100.004.405
EC Number	204-844-2;
KEGG	D01621;
PubChem CID	638034;
UNII	3LE3D9D6OY ;
CompTox Dashboard (EPA)	DTXSID6021240 ;
	InChI 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+ Key: QGNJRVVDBSJHIZ-QHLGVNSISA-N; InChI=1/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+ Key: QGNJRVVDBSJHIZ-QHLGVNSIBE;
	SMILES O=C(OC/C=C(/C=C/C=C(/C=C/C1=C(/CCCC1(C)C)C)C)C)C;
Properties
Chemical formula	C22H32O2
Molar mass	328.496 g·mol−1
Melting point	57 to 58 °C (135 to 136 °F; 330 to 331 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H361, H413
Precautionary statements	P201, P202, P264, P273, P280, P281, P302+P352, P308+P313, P321, P332+P313, P362, P405, P501
NFPA 704 (fire diamond)	1 1 0
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Retinyl acetate (also called vitamin A acetate or all‑trans‑retinol acetate) is a synthetic, fat‑soluble retinyl ester often used to supply vitamin A in food fortification, dietary supplements, and topical cosmetic products.

Because the acetyl group protects the alcohol functionality, the compound is markedly more stable to heat, oxygen and light than free retinol, yet is rapidly hydrolyzed in the human intestine to active retinol after ingestion.

Commercially, retinyl acetate is the second most common retinyl ester after retinyl palmitate.