4H-Pyrazolo(3, 4-d)pyrimidin-4-one, 6-amino-1, 5-dihydro-3-methyl-1-beta-D-ribofuranosyl-

4H-Pyrazolo(3, 4-d)pyrimidin-4-one, 6-amino-1, 5-dihydro-3-phenyl-1-b-D-ribofuranosyl-

4H-Pyrazolo(3, 4-d)pyrimidin-4-one, 6-amino-3-bromo-1, 5-dihydro-1-beta-D-ribofuranosyl-

4H-Pyrazolo(3, 4-d)pyrimidine-4-thione, 1, 5-dihydro-5-amino-6-(phenylamino)-

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-, hydrazone, trihydrochloride

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-1-chloro-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-5-methyl-

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-5-methyl-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-7, 8-dimethoxy-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-(phenylmethoxy)-

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-(phenylmethoxy)-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-methoxy-

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-methoxy-, (1-methylethylidene)hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-methoxy-, hydrazone

4H-Pyridazino(4, 5-b)indol-4-one, 3, 5-dihydro-8-methoxy-7-methyl-

4H-Pyrido(1, 2-a)pyrimidin-4-one, 2, 3, 6-trimethyl-, monohydrochloride

4H-Pyrido(1, 2-a)pyrimidin-4-one, 2, 6-dimethyl-3-ethyl-, monohydrochloride

4H-Pyrido(1, 2-a)pyrimidin-4-one, 2, 6-dimethyl-3-propyl-, monohydrochloride