Coumaric acid is a phenolic derivative of cinnamic acid having a hydroxy group as substituent at one of the aromatic positions:

• o-Coumaric acid (ortho-coumaric acid)
• m-Coumaric acid (meta-coumaric acid)
• p-Coumaric acid (para-coumaric acid)

See also

• Dihydroxycinnamic acid
• Ortho, meta, and para substitution

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