Octabenzone

Octabenzone
	IUPAC name (2-hydroxy-4-octoxy-phenyl)-phenyl-methanone
	Other names Benzophenone-12, Spectra-Sorb UV 531
Identifiers
CAS number	1843-05-6
PubChem	15797
ChemSpider	15020
UNII	73P3618V2E
KEGG	D00441
MeSH	(2-hydroxy-4-(octyloxy)phenyl)phenylmethanone
Jmol-3D images	Image 1
	SMILES O=C(c1ccc(OCCCCCCCC)cc1O)c2ccccc2 ;
	InChI InChI=1S/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3 ; Key: QUAMTGJKVDWJEQ-UHFFFAOYSA-N InChI=1/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3; Key: QUAMTGJKVDWJEQ-UHFFFAOYAM ;
Properties
Molecular formula	C21H26O3
Molar mass	326.429 g/mol
	(verify) (what is: /?); Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
	Infobox references

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Octabenzone (Spectra-Sorb UV 531) is a UV absorber/screener. It is used to protect polymers (e.g., polyethylene, polypropylene, polyvinylchloride) against damage by UV light.

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