4-methyl-5-(thiophene-2-carbonyl)-1,3-dihydroimidazol-2-one

N-[2-(hydroxyamino)-2-oxoethyl]thiophene-2-carboxamide

N-phenylthiophene-2-carboxamide

methyl 5-thiophen-2-yl-1,3-oxazole-4-carboxylate

(1-methyl-5-nitroimidazol-2-yl)-thiophen-2-ylmethanone