2-Piperidinoethyl m-(ethoxymethyl)carbanilate hydrochloride 80171-74-0 AMK 324 CARBANILIC ACID, m-(ETHOXYMETHYL)-, 2-PIPERIDINOETHYL ESTER, HYDROCHLORIDE m-(Ethoxymethyl)carbanilic acid 2-piperidinoethyl ester hydrochloride