3-thiophenecarboxylic acid, 2-amino-5-phenyl-, ethyl ester InChI=1/C13H13NO2S/c1-2-16-13(15)10-8-11(17-12(10)14)9-6-4-3-5-7-9/h3-8H,2,14H2,1H ethyl 2-amino-5-phenylthiophene-3-carboxylate