2-Isobutylaminoethyl m-aminobenzoate hydrochloride 553-58-2 Ethanol, 2-(isobutylamino)-, m-aminobenzoate (ester), monohydrochloride Ethanol, 2-[(2-methylpropyl)amino]-, 3-aminobenzoate (ester), monohydrochloride Metabutethamine hydrochloride NSC41532 Unacaine Unacaine hydrochloride