Purity >98%. Ethylene, an important plant regulator, is synthesized from S-adenosyl-L-methionine by the sequential action of 1-amino-cyclopropane-carboxylate (ACC) synthases (ACSs) and ACC oxidases (ACOs). Aminoethoxyvinyl glycine is an inhibitor of ethylene biosynthesis that, at 1 μM, blocks the activity of both ACSs and ACOs. Through this action, it reduces ethylene-mediated changes in plant growth and development. Aminoethoxyvinyl glycine also inhibits cystathionine Gamma-lyase (Ki = 10.5 μM) with slow- and tight-binding characteristics.