trans-p-Coumaric Acid TCI C0393

Chemical Identity

Other names: trans-4-Hydroxycinnamic Acid
CAS No.: 501-98-4
PubChem: CID 637542·SID 87565521
Formula: C9H8O3
Molecular weight: 164.16 g/mol
Purity: >98.0%(HPLC)(T)
Reference databases: ChEBI·ChemSpider·ECHA·Wikipedia

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: (E)-3-(4-hydroxyphenyl)prop-2-enoic acid
SMILES: C1=CC(=CC=C1C=CC(=O)O)O
InChIKey: NGSWKAQJJWESNS-ZZXKWVIFSA-N
MDL: MDL00004399

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TCI C0393 trans-p-Coumaric Acid, CAS 501-98-4, is a hydroxycinnamic acid that occupies a central position in the plant phenylpropanoid pathway. It serves as a precursor to lignin, flavonoids, and related phenolic metabolites, and is routinely used as a reference standard for phenolic quantification in natural product and food analysis. Its antioxidant character and characteristic UV absorption also make it useful in radical-scavenging assays and as a matrix material in certain mass spectrometry techniques. Available from AMI Scientific in 25 g, 100 g, and 500 g packs, it should be stored cool, dry, and protected from light to preserve the trans configuration.