p-Coumaric acid

p-Coumaric acid
Names
	Preferred IUPAC name (2E)-3-(4-Hydroxyphenyl)prop-2-enoic acid
	Other names (E)-3-(4-Hydroxyphenyl)-2-propenoic acid; (E)-3-(4-Hydroxyphenyl)acrylic acid; para-Coumaric acid; 4-Hydroxycinnamic acid; trans-4-Hydroxycinnamic acid ; β-(4-Hydroxyphenyl)acrylic acid
Identifiers
CAS Number	501-98-4 ;
3D model (JSmol)	Interactive image; Interactive image;
Beilstein Reference	2207383
ChEBI	CHEBI:32374 ;
ChEMBL	ChEMBL66879 ;
ChemSpider	553148 ;
DrugBank	DB04066 ;
ECHA InfoCard	100.116.210
EC Number	231-000-0;
Gmelin Reference	2245630
IUPHAR/BPS	5787;
KEGG	C00811;
PubChem CID	637542;
UNII	IBS9D1EU3J;
CompTox Dashboard (EPA)	DTXSID30901076 ;
	InChI InChI=1S/C9H8O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6,10H,(H,11,12)/b6-3+ Key: NGSWKAQJJWESNS-ZZXKWVIFSA-N ; InChI=1/C9H8O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6,10H,(H,11, 12)/b6-3+/f/h11H; InChI=1/C9H8O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6,10H,(H,11,12)/b6-3+ Key: NGSWKAQJJWESNS-ZZXKWVIFBJ;
	SMILES C1=CC(=CC=C1\C=C\C(=O)O)O; c1cc(ccc1/C=C/C(=O)O)O;
Properties
Chemical formula	C9H8O3
Molar mass	164.160 g·mol−1
Melting point	210 to 213 °C (410 to 415 °F; 483 to 486 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P305+P351+P338
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

p-Coumaric acid is an organic compound with the formula HOC₆H₄CH=CHCO₂H. It is one of the three isomers of coumaric acid. It is a white solid that is only slightly soluble in water but very soluble in ethanol and diethyl ether.