Coumaric Acids

**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.

**Tree numbers:** - D02.241.223.200.210

**Synonyms:** - Coumaric Acid - Hydroxycinnamic Acid - Hydroxycinnamic Acids