Basic information
- CAS
331-39-5- Standard SMILES
O=C(O)C=Cc1ccc(O)c(O)c1- InChIKey
QAIPRVGONGVQAS-UHFFFAOYSA-N- Molecular formula
- C9H8O4
- Average molar mass
- 180.16 g/mol
- Monoisotopic mass
- 180.04225874
Overview
QAIPRVGONGVQAS-UHFFFAOYSA-N has been reported in Salvia miltiorrhiza, Acanthospermum australe, and other organisms with data available.
Names & identifiers
- Preferred name
- 3-(3,4-Dihydroxyphenyl)Prop-2-Enoic Acid
- IUPAC
- 3-(3,4-dihydroxyphenyl)prop-2-enoic acid
- English name
- Caffeic acid
- Molecular formula
- C9H8O4
- Molecular weight
- 180.16
Names & synonyms
Show more names
Database identifiers
- CAS
331-39-5- PubChem CID
- 2518
- DTXSID
DTXSID5020231- ChEMBL
CHEMBL3181904
Properties
Computed structural properties
- XLogP
- 1.2
- Topological polar surface area
- 77.8 Ų
- Hydrogen bond donors
- 3
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 2
- Heavy atoms
- 13
- Formal charge
- 0
- Complexity
- 212
Experimental & physicochemical properties
Physicochemical properties
- Melting point
- 211 · 211-213 °C (dec.) (lit.)
- Boiling point
- 272.96 °C · 272.96°C (rough estimate)
- Density
- 1.2933 · 1.2933 (rough estimate)
- refractive index
- 1.45 · 1.4500 (estimate)
- storage temp.
- 2 · 2-8°C
- solubility
- 50 mg/mL · ethanol: 50 mg/mL
- form
- powder
- pka
- 4.58 · 4.58±0.10(Predicted)
- color
- yellow to tan
- Water Solubility
- soluble in hot water
- Merck
- 14 · 14,1635
- BRN
- 2210883 · 2210883
- Henry's Law Constant
- 7 · 7.0×1010 mol/(m3Pa) at 25℃, HSDB (2015)
- Stability
- Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
- Cosmetics Ingredients Functions
- FRAGRANCEANTIOXIDANT
- InChI
- 1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)/b4-2+
- InChIKey
- QAIPRVGONGVQAS-DUXPYHPUSA-N
- SMILES
- OC(=O)\C=C\c1ccc(O)c(O)c1
- LogP
- 1.15 · 1.150
- CAS DataBase Reference
- 331 · 331-39-5(CAS DataBase Reference)
- EWG's Food Scores
- 3 · 3
- FDA UNII
- 2 S3A33KVM · U2S3A33KVM
- Proposition 65 List
- Caffeic Acid
- NCI Drug Dictionary
- caffeic acid
- IARC
- 2 B · 2B (Vol. 56) 1993
- NIST Chemistry Reference
- 3 · Cinnamic acid, 3,4-dihydroxy-(331-39-5)
- EPA Substance Registry System
- 2 · 2-Propenoic acid, 3-(3,4-dihydroxyphenyl)- (331-39-5)
- UNSPSC Code
- 41116107 · 41116107
- NACRES
- 77 · NA.77
- Symbol(GHS)
- 8 · GHS08
- Signal word
- Warning
- Hazard statements
- 351 · H351
- Precautionary statements
- 280 · P280
- PPE
- 3 · Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
- Hazard Codes
- Xn,Xi
- Risk Statements
- 36 · 36/37/38-40-63-68
- Safety Statements
- 26 · 26-36/37/39-36
- WGK Germany
- 3 · 3
- RTECS
- 8950000 · GD8950000
- Hazard Note
- Irritant
- HS Code
- 29182990 · 29182990
- Storage Class
- 11 · 11 - Combustible Solids
- Hazard Classifications
- 2 · Carc. 2
- Hazardous Substances Data
- 331 · 331-39-5(Hazardous Substances Data)
Safety & regulation
Safety data
- PPE
- Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
- wgk
- 3
- rtecs
- GD8950000
- hs_code
- 29182990
- risk_code
- 36/37/38-40-63-68
- Signal word
- Warning
- Symbol(GHS)
- GHS08
- hazard_code
- Xn,Xi
- hazard_note
- Irritant
- safety_code
- 26-36/37/39-36
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H351
- Hazard Classifications
- Carc. 2
- Precautionary statements
- P280
- Hazardous Substances Data
- 331-39-5(Hazardous Substances Data)
Chemistry & industry
Applications
Uses1. Reagents for Organic Synthesis. 2. Intermediate of caffeic acid; can be used in organic synthesis. 3. Used for Biochemical studies.
DescriptionCaffeic acid is abundant in the whole plant of Solidago decurrens Lour. (Yi Zhi Huang Hua), fruit of Crataegus pinnatifida Bge. var. major N.E.Br. (Shan Li Hong), Salix myrtillacea Anderss. (Po Liu), rhizome of Cimicifuga foetida L., rhizome of Polypodiaceae Polypodium vulgare L. (Ou Ya Shui Long Gu), peel of Rutaceae Citrus limonum (Ning Meng), the whole plant of Polygonaceae Polygonum aviculare L. (Pian Xu), root of Valeriana officinalis L. (Xie Cao), the whole plant of Thymus mongolicus Ronn (She Xiang), leaves of Eucommia ulmoides (Du Zhong), and other herbal plants. It is a kind of polyhydroxy styrene acid, with the general chemical properties of phenolic acid. It is easily oxidized for the reason of the unsaturated double bonds, particularly unstable in alkaline solutionCaffeic acid has both cis and trans isomers, and the two isomers of caffeic acid have a mutual transformation in plants, which may regulate some important physiological process. Caffeic acid exists in plants in the main form of complexes; free state accounts for a few proportion.
DescriptionCaffeic acid is an inhibitor of 5-LO with an IC50 value of 3.7-72 μM and 12-LO with an IC50 value of 5.1-30 μM.
UsesCaffeic Acid is a constituent of plants, probably occurs in plants only in conjugated forms. Caffeic acid is found in all plants because it is a key intermediate in the biosynthesis of lignin, one of the principal sources of biomass. Caffeic acid is one of the main natural phenols in argan oi.
UsesCaffeic acid has been used as a standard of phenolic acid in the study to determine the total phenolic acid content in vegetables after subjecting to alkaline and acid hydrolysis. It has also been used to determine its antioxidant activity by various assay methods.
Usesantineoplastic, PGE2 synthase inhibitor, PK inhibitor
General DescriptionYellow prisms or plates (from chloroform or ligroin) or pale yellow granules. Alkaline solutions turn from yellow to orange.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers101 total
Additional notes
DefinitionChEBI: Caffeic acid is a hydroxycinnamic acid that is cinnamic acid in which the phenyl ring is substituted by hydroxy groups at positions 3 and 4. It exists in cis and trans forms; the latter is the more common. It has a role as a plant metabolite, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, an EC 2.5.1.18 (glutathione transferase) inhibitor, an EC 1.13.11.34 (arachidonate 5-lipoxygenase) inhibitor, an antioxidant and an EC 3.5.1.98 (histone deacetylase) inhibitor. It is a hydroxycinnamic acid and a member of catechols.
Related reactions
Compound notes
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