2,4-Thiophenedicarboxylic acid, 5-[(2-chloroacetyl)amino]-3-(2-methoxy-2-oxoethyl)-, 2,4-dimethyl ester
2,4-Thiophenedicarboxylic acid, 5-[(chloroacetyl)amino]-3-(2-methoxy-2-oxoethyl)-, dimethyl ester
2,4-Dimethyl 5-[(2-chloroacetyl)amino]-3-(2-methoxy-2-oxoethyl)-2,4-thiophenedicarboxylate