:M-Coumaric acid

{{DISPLAYTITLE:m-Coumaric acid}}

{{chembox

| Name = m-Coumaric acid

| ImageFile = 3-(3-hydroxyphenyl)-acrylic acid.svg

| ImageName = Skeletal formula of m-coumaric acid

| PIN = (2E)-3-(3-Hydroxyphenyl)prop-2-enoic acid

| OtherNames = meta-Coumaric acid
3-Hydroxycinnamic acid

|Section1={{Chembox Identifiers

| CASNo = 588-30-7

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = KWJ2DDJ34H

| EINECS = 209-615-0

| PubChem = 637541

| ChemSpiderID = 553147

| SMILES = C1=CC(=CC(=C1)O)/C=C/C(=O)O

| InChI = 1/C9H8O3/c10-8-3-1-2-7(6-8)4-5-9(11)12/h1-6,10H,(H,11,12)/b5-4+

| InChIKey = KKSDGJDHHZEWEP-SNAWJCMRBO

| StdInChI = 1S/C9H8O3/c10-8-3-1-2-7(6-8)4-5-9(11)12/h1-6,10H,(H,11,12)/b5-4+

| StdInChIKey = KKSDGJDHHZEWEP-SNAWJCMRSA-N

| RTECS =

| MeSHName =

| ChEBI = 32357

| KEGG = C12621

}}

|Section2={{Chembox Properties

| Formula = C₉H₈O₃

| MolarMass = 164.16 g/mol

| MeltingPt =

}}

|Section3={{Chembox Hazards

| RPhrases =

| SPhrases =

}}

}}

m-Coumaric acid is a hydroxycinnamic acid, an organic compound that is a hydroxy derivative of cinnamic acid.[http://www.phenol-explorer.eu/compounds/463 m-Coumaric acid at www.phenol-explorer.eu] There are three isomers of coumaric acid – o-coumaric acid, m-coumaric acid, and p-coumaric acid – that differ by the position of the hydroxy substitution of the phenyl group.

m-Coumaric acid can be found in vinegar.