Back to Search
Caffeic Acid
CAS: 331-39-5 | C9H8O4
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
331-39-5
Molecular Formula:
C9H8O4
Molecular Mass:
180.16 g/mol
Names and Synonyms:
Caffeic Acid
2-Propenoic acid, 3-(3,4-dihydroxyphenyl)-
Cinnamic acid, 3,4-dihydroxy-
3-(3,4-Dihydroxyphenyl)-2-propenoic acid
Caffeic acid
3,4-Dihydroxycinnamic acid
3-(3,4-Dihydroxyphenyl)propenoic acid
4-(2-Carboxyethenyl)-1,2-dihydroxybenzene
4-(2′-Carboxyvinyl)-1,2-dihydroxybenzene
3,4-Dihydroxybenzeneacrylic acid
NSC 57197
NSC 623438
DHCA
Identifiers:
SMILES:
O=C(O)C=Cc1ccc(O)c(O)c1
InChI:
InChI=1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)
Key Properties
Melting Point
225 °C (decomp)
CAS Common Chemistry
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 180.16 g/mol | CAS Common Chemistry |
| 180.159 g/mol | RDKit | |
| 180.042258736 g/mol | RDKit | |
| Canonical SMILES | O=C(O)C=CC1=CC=C(O)C(O)=C1 | CAS Common Chemistry |
| InChI | InChI=1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13) | CAS Common Chemistry |
| InChI Key | InChIKey=QAIPRVGONGVQAS-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 225 °C (decomp) | CAS Common Chemistry |
| Name | Caffeic acid | CAS Common Chemistry |
| Heavy Atom Count | 13 | RDKit |
| Hydrogen Bond Acceptors | 3 | RDKit |
| Hydrogen Bond Donors | 3 | RDKit |
| Rotatable Bonds | 2 | RDKit |
| Aromatic Ring Count | 1 | RDKit |
| Topological Polar Surface Area | 77.76 Ų | RDKit |
| LogP | 1.1956 | RDKit |
| Molar Refractivity | 46.441400000000016 | RDKit |
