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Caffeic acid

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Name

Caffeic acid

EINECS 206-361-2
CAS No. 331-39-5 Density 1.478 g/cm3
PSA 77.76000 LogP 1.19560
Solubility soluble in hot water Melting Point 211-213 °C (dec.)(lit.)
Formula C9H8O4 Boiling Point 416.8 °C at 760 mmHg
Molecular Weight 180.16 Flash Point 220 °C
Transport Information N/A Appearance Light yellow to greenish-yellow powder
Safety 26-36/37/39-36 Risk Codes 36/37/38-40-63-68
Molecular Structure Molecular Structure of 331-39-5 (Caffeic acid) Hazard Symbols HarmfulXn, IrritantXi
Synonyms

Cinnamicacid, 3,4-dihydroxy- (8CI);3,4-Dihydroxybenzeneacrylic acid;3,4-Dihydroxycinnamic acid;3-(3,4-Dihydroxyphenyl)-2-propenoic acid;3-(3,4-Dihydroxyphenyl)propenoic acid;4-(2-Carboxyethenyl)-1,2-dihydroxybenzene;4-(2'-Carboxyvinyl)-1,2-dihydroxybenzene;NSC 57197;NSC 623438;

Article Data 165

Caffeic acid Synthetic route

141-82-2

malonic acid

139-85-5

3,4-dihydroxybenzaldehyde

331-39-5

caffeic acid

Conditions
ConditionsYield
With silica gel at 110 - 120℃; for 0.0833333h; Condensation; Solid-phase reaction; Decarboxylation; microwave irradiation;76%
With pyridine; aniline In toluene at 95℃;55.7%
With pyridine; aniline In toluene for 2h; Reflux;44.2%
7400-08-0

p-Coumaric Acid

331-39-5

caffeic acid

Conditions
ConditionsYield
With sodium dihydrogenphosphate at 25℃; for 0.25h; pH=7; Reagent/catalyst; Glovebox;50%
With dipotassium hydrogenphosphate; iron(II) sulfate; citric acid at 30℃; for 1h; Product distribution; pH 5.0, investigated effects of various metal ions and various compounds and enzymes;
With leaves Silene dioica at 30℃; for 0.166667h; Mechanism; incubation with glucose-6-posphate and NADP;
40918-96-5

methyl (2E)-3-(1,3-benzodioxol-5-yl)acrylate

331-39-5

caffeic acid

Conditions
ConditionsYield
Stage #1: methyl (2E)-3-(1,3-benzodioxol-5-yl)acrylate With boron tribromide In chloroform at 25℃; for 16h;
Stage #2: With sodium hydrogencarbonate In chloroform; water at 25℃; pH=7;
38.3%
1135-24-6

(E)-3-(4-hydroxy-3-methoxyphenyl)acrylic acid

331-39-5

caffeic acid

Conditions
ConditionsYield
With oxygen; copper(II) perchlorate; ascorbic acid In water24%
In various solvent(s) at 37℃; for 1h; Product distribution; Mechanism; air, phenobarbital-induced rat liver microsomes NADPH, pH = 7.4; other enzymatic system;
140-10-3

(E)-3-phenylacrylic acid

A

13080-39-2

1-[3-(4-hydroxyphenyl)-2-propenoate]-β-D-glucopyranoside

B

331-39-5

caffeic acid

C

7400-08-0

p-Coumaric Acid

Conditions
ConditionsYield
In ethanol; water at 25℃; for 72h; cell culture of Nicotiana tabacum;
Conditions
ConditionsYield
at 30℃; for 0.5h; pH 6.4; enzyme from Ipomoea batatas;
92279-06-6

3-(3',4'-dioxo-1',5'-cyclohexadienyl)propenoic acid

873-55-2

sodium benzenesulfonate

A

331-39-5

caffeic acid

B

58058-71-2

6'-phenysulfonylcaffeic acid

C

58058-69-8

5'-phenysulfonylcaffeic acid

Conditions
ConditionsYield
With O at 30℃; for 48h; alkaline solution, pH 10.0;
202650-88-2

3-caffeoylquinic acid

331-39-5

caffeic acid

Conditions
ConditionsYield
With hydrogenchloride; ethanol for 4h; Heating;
106972-94-5, 105471-98-5

calceolarioside B

A

2280-44-6

D-Glucose

B

331-39-5

caffeic acid

Conditions
ConditionsYield
With hydrogenchloride In methanol; water at 90℃; for 2h; Product distribution; study of the acid hydrolysis;
104777-68-6

3,4-dihydroxy-β-phenethyl-O-β-D-glucopyranosyl-(1->3)-4-O-caffeoyl-β-D-glucopyranoside

331-39-5

caffeic acid

Conditions
ConditionsYield
With sodium hydroxide at 50℃; for 1h; Product distribution;

Caffeic acid Chemical Properties

Molecular Formula: C9H8O4
Molecular Weight: 180.16 g/mol 
EINECS: 206-361-2 
Index of Refraction: 1.706
Molar Refractivity: 47.47 cm3
Molar Volume: 121.8 cm3 
Surface Tension: 77.8 dyne/cm
Density: 1.478 g/cm3
Flash Point: 220 °C
Enthalpy of Vaporization: 70.65 kJ/mol
Boiling Point: 416.8 °C at 760 mmHg
Vapour Pressure: 1.08E-07 mmHg at 25 °C
Melting point: 34-39 °C
Storage tempreture: Store at RT.
Water solubility: Soluble in hot water
Solubility: Ethanol : 50 mg/mL
Appearance: Light yellow to greenish-yellow powder
Structure of Caffeic acid (CAS NO.331-39-5):
                      
IUPAC Name: (E)-3-(3,4-Dihydroxyphenyl)prop-2-enoic acid
Canonical SMILES: C1=CC(=C(C=C1C=CC(=O)O)O)O
Isomeric SMILES: C1=CC(=C(C=C1/C=C/C(=O)O)O)O
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)/b4-2+
InChIKey: QAIPRVGONGVQAS-DUXPYHPUSA-N
Product Category of Caffeic acid (CAS NO.331-39-5): Pharmaceutical Intermediates;Aromatic Cinnamic Acids, Esters and Derivatives;Cinnamic acid;Organic acids;Antioxidant;Biochemistry

Caffeic acid Uses

 Caffeic acid (CAS NO.331-39-5) may be the active ingredient in caffenol, a do-it-yourself black and white photographic developer made from instant coffee. It is also used as a matrix in MALDI mass spectroscopy analyses, and is a key intermediate in the biosynthesis of lignin, one of the principal sources of biomass.

Caffeic acid Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal > 721mg/kg (721mg/kg)   Yakugaku Zasshi. Journal of Pharmacy. Vol. 104, Pg. 793, 1984.
rat LDLo intraperitoneal 1500mg/kg (1500mg/kg)   Toxicology and Applied Pharmacology. Vol. 36, Pg. 227, 1976.

Caffeic acid (CAS NO.331-39-5) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65. And the toxicological properties have not been fully investigated. You can see actual entry in RTECS for complete information.

Caffeic acid Safety Profile

Moderately toxic by intraperitoneal route. An experimental teratogen. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes: HarmfulXn,IrritantXi
Risk Statements: 36/37/38-40-63-68
R36/37/38:Irritating to eyes, respiratory system and skin. 
R40:Limited evidence of a carcinogenic effect. 
R63:Possible risk of harm to the unborn child. 
R68:Possible risk of irreversible effects.
Safety Statements: 26-36/37/39-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

Caffeic acid Specification

 Caffeic acid , its cas register number is 331-39-5. It also can be called 3,4-Dihydroxycinnamic acid ; 3,4-Dihydroxybenzeneacrylic acid ; and 3-(3,4-Dihydroxy phenyl)-2-propenoic acid . It is a naturally occurring organic compound, and is found in all plants because it is a key intermediate in the biosynthesis of lignin. It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: Wash mouth out with water, and get medical aid immediately.
In addition, Caffeic acid (CAS NO.331-39-5) could be stable under normal temperatures and pressures. It is not compatible with strong oxidizing agents, strong acids, strong bases, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: Carbon monoxide, carbon dioxide.

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