China Methyl 3-[[(2RS)-2-(Ethylamino)propanoyl]amino]-4-methylthiophene-2-carboxylate Hydrochloride, China Methyl 4-Methyl-3-[[(2RS)-2-[(1-methylethyl)amino]-propanoyl]amino]thiophene-2-carboxylate Hydrochloride, China Articaine acid Propionamide Hydrochloride, Products Catalog12