Is 3-(3,4-Dihydroxyphenyl)-2-propenoic acid vegan?

Caffeic Acid is also known as 3-(3,4-Dihydroxyphenyl)-2-propenoic acid.

Caffeic acid is a naturally occurring hydroxycinnamic acid found in all plants as an intermediate in lignin biosynthesis; it has antioxidant properties and is chemically unrelated to caffeine despite the similar name.

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