Articaine hydrochloride23964-57-0100 % similar Articaine23964-58-194 % similar Prilocaine hydrochloride1786-81-851 % similar Prilocaine721-50-646 % similar Methyl 3-amino-4-methylthiophene-2-carboxylate85006-31-139 % similar Dimethyl 4-aminothiophene-2,3-dicarboxylate hydrochloride121071-71-435 % similar 4-Butyrylamino-3-methyl-5-nitrobenzoic acid methyl ester152628-01-831 % similar Bupivacaine hydrochloride14252-80-330 % similar Bupivacaine hydrochloride18010-40-730 % similar (-)-Bupivacaine monohydrochloride27262-48-230 % similar Ropivacaine hydrochloride98717-15-830 % similar