Vanillyl mandelic acid (VMA) is a chemical intermediate in the synthesis of artificial vanilla flavorings and is an end-stage metabolite of the catecholamines, epinephrine, and norepinephrine.

[Tyr0] - α - CGRP, [Tyr0] - α - CGRP, rat

Chebulic acid, a phenolcarboxylic acid compound isolated from Terminalia chebula, has potent anti-oxidant activity, which breaks the cross-links of proteins induced by advanced glycation end-products (AGEs) and inhibits the formation of AGEs.