(E)-m-Coumaric acid (3-Hydroxycinnamic acid) is an aromatic acid abundant in food. (E)-m-Coumaric acid (3-Hydroxycinnamic acid) is an antioxidant compound.

Physicochemical Properties

Molecular Formula	C9H8O3
Molecular Weight	164.1580
Exact Mass	164.047
CAS #	14755-02-3
PubChem CID	637541
Appearance	Light brown to yellow solid powder
Density	1.3±0.1 g/cm3
Boiling Point	373.2±25.0 °C at 760 mmHg
Melting Point	193-195 °C(lit.)
Flash Point	193.7±19.7 °C
Vapour Pressure	0.0±0.9 mmHg at 25°C
Index of Refraction	1.660
LogP	1.83
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Heavy Atom Count	12
Complexity	186
Defined Atom Stereocenter Count	0
SMILES	C1=CC(=CC(=C1)O)/C=C/C(=O)O
InChi Key	KKSDGJDHHZEWEP-SNAWJCMRSA-N
InChi Code	InChI=1S/C9H8O3/c10-8-3-1-2-7(6-8)4-5-9(11)12/h1-6,10H,(H,11,12)/b5-4+
Chemical Name	(E)-3-(3-hydroxyphenyl)prop-2-enoic acid
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

References

[1]. Hydroxycinnamic Acid Antioxidants: An Electrochemical Overview. BioMed Research International. 2013. 18 June.

Additional Infomation

3-coumaric acid is a monohydroxycinnamic acid in which the hydroxy substituent is located at C-3 of the phenyl ring. It has a role as a human xenobiotic metabolite and a plant metabolite. It is a conjugate acid of a 3-coumarate. 3-Hydroxycinnamic acid is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). 3-Hydroxycinnamic acid has been reported in Balanophora tobiracola, Rubus idaeus, and other organisms with data available. See also: Ipomoea aquatica leaf (part of).

Solubility Data

Solubility (In Vitro)

DMSO : ~100 mg/mL (~609.16 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (15.23 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (15.23 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 2.5 mg/mL (15.23 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	6.0916 mL	30.4581 mL	60.9162 mL
	5 mM	1.2183 mL	6.0916 mL	12.1832 mL
	10 mM	0.6092 mL	3.0458 mL	6.0916 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.