Articaine23964-58-1100 % similar Articaine hydrochloride23964-57-094 % similar Prilocaine721-50-648 % similar Prilocaine hydrochloride1786-81-846 % similar Methyl 3-amino-4-methylthiophene-2-carboxylate85006-31-141 % similar 4-Butyrylamino-3-methyl-5-nitrobenzoic acid methyl ester152628-01-832 % similar Dimethyl 4-aminothiophene-2,3-dicarboxylate hydrochloride121071-71-431 % similar