Definition: Hydroxycinnamic acid and its derivatives. Act as activators of the indoleacetic acid oxidizing system, thereby producing a decrease in the endogenous level of bound indoleacetic acid in plants.
Other names Hydroxycinnamic Acids; Acids, Hydroxycinnamic; Acids, Coumaric
sinapinic acid [ 3,5-dimethoxy-4-hydroxycinnamic acid,sinapic acid ] a matrix for matrix-assisted laser desorption technique for protein MW determination; a constituent of propolis