Caffeic acid (3,4-dioxicinnamic acid) is an aromatic organic compound, dihydric phenol , unsaturated carboxylic acid with the formula (HO) 2 C 6 H 3 CH = CHCOOH. It is found in all plants, as it is an intermediate product in the lignin biosynthesis.
| Coffee acid | |
|---|---|
| General | |
| Systematic name | 3,4-Dioxoric acid |
| Traditional names | Coffee acid |
| Chem. formula | (HO) 2 C 6 H 3 CH = CHCOOH |
| Physical properties | |
| condition | yellow monoclinic crystals |
| Molar mass | 180.16 g / mol |
| Density | 1,478 g / cm³ |
| Thermal properties | |
| T. melt. | 195 ° C (decomp.), 213 ° C |
| Classification | |
| Reg. CAS number | 331-39-5 |
| PubChem | |
| Reg. EINECS number | |
| Smiles | |
| Inchi | |
| RTECS | |
| Chebi | |
| ChemSpider | |
Content
- 1 Receiving
- 2 Properties
- 3 Biological role
- 4 Application
- 5 notes
- 6 Literature
Getting
- By boiling with alkali, coffered acid in coffee;
- From protocatechaldehyde (HO) 2 C 6 H 3 —COH by the Perkin reaction .
Properties
Caffeic acid is a yellow monoclinic crystal [1] , soluble in water and alcohol , hardly soluble in ether .
Biological role
Caffeic acid is found in all plants, as it is an intermediate in the biosynthesis of lignin and other biologically active substances .
Application
- Caffeic acid, studies show, inhibits carcinogenesis , although according to other sources, it exhibits possible carcinogenic effects. .
- Caffeic acid also exhibits immunomodulatory and anti-inflammatory activity. .
Notes
- ↑ Chemist's Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Literature
- Phenols // Brockhaus and Efron Encyclopedic Dictionary : in 86 volumes (82 volumes and 4 additional). - SPb. , 1890-1907.