3-[(5-methylthiophen-2-yl)amino]-2-nitroprop-2-enal

2-nitro-3-(4,5,6,7-tetrahydro-1-benzothiophen-2-ylamino)prop-2-enal

2-methyl-5-nitrothieno[2,3-b]pyridine

ethyl 3-methyl-5-nitrothieno[2,3-b]pyridine-2-carboxylate

2-nitro-3-[[5-(nitromethyl)-2-phenylpyrazol-3-yl]amino]prop-2-enal