Cinoxate

Cinoxate is an organic compound used as an ingredient in some types of sunscreens. It is an ester formed from methoxycinnamic acid and 2-ethoxyethanol. It is a slightly yellow viscous liquid that is insoluble in water, but miscible with alcohols, esters, and vegetable oils.

Quick facts Names, Identifiers ...

Cinoxate^[1]

Names
Preferred IUPAC name 2-Ethoxyethyl (2E)-3-(4-methoxyphenyl)prop-2-enoate
Other names 2-Ethoxyethyl p-methoxycinnamate
Identifiers
CAS Number	104-28-9 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL2104045 N
ChemSpider	4523729 Y
ECHA InfoCard	100.002.901
KEGG	D03512 Y
PubChem CID	5373773
UNII	5437O7N5BH Y
CompTox Dashboard (EPA)	DTXSID101167513 DTXSID2025264, DTXSID101167513
InChI InChI=1S/C14H18O4/c1-3-17-10-11-18-14(15)9-6-12-4-7-13(16-2)8-5-12/h4-9H,3,10-11H2,1-2H3/b9-6+ Y Key: CMDKPGRTAQVGFQ-RMKNXTFCSA-N Y InChI=1/C14H18O4/c1-3-17-10-11-18-14(15)9-6-12-4-7-13(16-2)8-5-12/h4-9H,3,10-11H2,1-2H3/b9-6+ Key: CMDKPGRTAQVGFQ-RMKNXTFCBV
SMILES O=C(OCCOCC)\C=C\c1ccc(OC)cc1
Properties
Chemical formula	C14H18O4
Molar mass	250.294 g·mol−1
Density	1.102 g/cm3
Melting point	−25 °C (−13 °F; 248 K)
Boiling point	184 to 187 °C (363 to 369 °F; 457 to 460 K) at 2 mmHg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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It was approved as UV filter in the USA by the FDA in 1961, but it is not commonly used in cosmetic formulations anymore.^[2]