1,3-Benzodioxole-5-carboxylic acid, 2-(2-butoxyethoxy)ethyl ester 136-63-0 2-(2-Butoxyethoxy)ethyl ester of piperonylic acid 2-(2-Butoxyethoxy)ethyl ester piperonylic acid AI3-26237 Bucarpolate Caswell No. 121A EPA Pesticide Chemical Code 221200 Piperonylic acid, diethylene glycol monobutyl ether ester