ethyl 2-amino-5-cyano-4-methylthiophene-3-carboxylate

4-methyl-7-phenylpyrazolo[5,1-c][1,2,4]triazine-3-carbonitrile

6-amino-4-methyl-2-sulfanylidene-1H-pyridine-3-carbonitrile

6-methyl-4-phenyl-2-thioxo-1,2-dihydropyrimidine-5-carbonitrile