2,3-Dimethoxybenzoic acid 2-piperidinoethyl ester hydrochloride 2,3-Dimethoxybenzoic acid hydrochloride, 2-(pentylideneamino)ethyl ester 64038-43-3 Benzoic acid, 2,3-dimethoxy-, 2-piperidinoethyl ester, hydrochloride o-Veratric acid, 2-piperidinoethyl ester, hydrochloride