Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 6-hydroxy-1,3-dimethyl-7-nitroso-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 6-hydroxy-1,3-dimethyl-7-pentyl-9-phenyl-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 6-hydroxy-7-(2-hydroxyethyl)-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-(2-butenyl)-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)- (9CI)

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-(2-cyclohexylideneethyl)-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-amino-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-butyl-6-hydroxy-1,3-dimethyl-9-phenyl-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-[(dimethylamino)methylene]-6,7-dihydro-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)- (9CI)

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-[2-(acetyloxy)ethyl]-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-[2-(dimethylamino)ethyl]-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-[2-(ethylsulfonyl)ethyl]-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 7-[2-(ethylthio)ethyl]-6-hydroxy-1,3-dimethyl-9-(phenylmethyl)-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 9-hexyl-6-hydroxy-1,3-dimethyl-7-propyl-

Name : Pyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, 9-[(4-fluorophenyl)methyl]-6-hydroxy-1,3-dimethyl-7-(2-propynyl)- (9CI)

Name : Pyrimido[2,1-f]purine-7,7(6H)-diacetic acid, 1,2,3,4,8,9-hexahydro-1,3-dimethyl-2,4,6,8-tetraoxo-9-(phenylmethyl)-, dimethyl ester (9CI)

Name : Pyrimido[2,1-f]purine-7-carboxaldehyde, 1,2,3,4,8,9-hexahydro-6-hydroxy-1,3-dimethyl-2,4,8-trioxo-9-(phenylmethyl)-

Name : Pyrimido[4,5-b]quinoline-2(1H)-thione, 4-amino-6,7,8,9-tetrahydro- (9CI)

Name : Pyrimido[4,5-b][1,4]diazocine-2,4,6,9(1H,3H)-tetrone, 5,7,8,10-tetrahydro-1,3-dimethyl-

Name : Pyrimido[4,5-b][1,4]oxazepine (9CI)

Name : Pyrimido[4,5-c]pyridazin-5(1H)-one (9CI)

Name : Pyrimido[4,5-c]pyridazin-5(1H)-one, 4,6-dihydro- (9CI)

Name : Pyrimido[4,5-c]pyridazine (7CI,8CI,9CI)

Name : Pyrimido[4,5-c][2,5]benzodiazocine-2,4,6,11(1H,3H)-tetrone, 5,12-dihydro-1,3-dimethyl-

Name : Pyrimido[4,5-d]-1,2,3-triazine (9CI)

Name : Pyrimido[4,5-d]pyridazin-4(3H)-one (8CI)

Name : Pyrimido[4,5-d]pyridazine (7CI,8CI,9CI)

Name : Pyrimido[4,5-d]pyrimidin-2(1H)-one (6CI)

Name : Pyrimido[4,5-d]pyrimidin-2-amine, 5,6-dihydro- (9CI)

Name : Pyrimido[4,5-d]pyrimidin-2-ol, 5,6-dihydro- (6CI)

Name : Pyrimido[4,5-d]pyrimidin-4(3H)-one (6CI,8CI)

Name : Pyrimido[4,5-d]pyrimidin-4-amine (9CI)

Name : Pyrimido[4,5-d]pyrimidin-4-ol, 3,4-dihydro- (9CI)

Name : Pyrimido[4,5-d]pyrimidine (8CI,9CI)

Name : Pyrimido[4,5-d]pyrimidine, 1,5-dihydro-2-methyl- (6CI,8CI,9CI)

Name : Pyrimido[4,5-d]pyrimidine, 3,4-dihydro- (6CI,8CI)

Name : Pyrimido[4,5-d]pyrimidine, 4-amino-1,2-dihydro- (7CI)

Name : Pyrimido[4,5-e]-1,2,3,4-tetrazine (9CI)

Name : Pyrimido[4,5-e]-1,2,4-triazine (9CI)

Name : Pyrimido[4,5-e][1,4]oxazepine (8CI,9CI)

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 1,6-dihydro-5,10-dihydroxy-2,7-dimethyl- (9CI)

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 1,6-dihydro-5,10-dimethoxy-2,7-bis(phenoxymethyl)- (9CI)

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2,7-bis(bromomethyl)-1,6-dihydro-5,10-dihydroxy- (9CI)

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2,7-bis(bromomethyl)-3,8-dihydro-5,10-dimethoxy-3,8-dimethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2,7-bis(chloromethyl)-3,8-dihydro-5,10-dihydroxy-3,8-dimethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2,7-bis(chloromethyl)-3,8-dihydro-5,10-dimethoxy-3,8-dimethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2-(chloromethyl)-1,6-dihydro-5,10-dihydroxy-7-methyl- (9CI)

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 2-(chloromethyl)-3,8-dihydro-5,10-dimethoxy-3,7,8-trimethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 3,8-dihydro-5,10-dihydroxy-2,3,7,8-tetramethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 3,8-dihydro-5,10-dihydroxy-2,7-bis(hydroxymethyl)-3,8-dimethyl-

Name : Pyrimido[4,5-g]quinazoline-4,9-dione, 3,8-dihydro-5,10-dimethoxy-2,7-bis(methoxymethyl)-3,8-dimethyl-

Name : Pyrimido[5,4-b][1,4]oxazepine (9CI)

Name : Pyrimido[5,4-c]pyridazin-8(7H)-one (8CI)

Name : Pyrimido[5,4-c]pyridazine (7CI,8CI,9CI)

Name : Pyrimido[5,4-c]pyridazine, 8-amino- (8CI)

Name : Pyrimido[5,4-d]-1,2,3-triazine (9CI)

Name : Pyrimido[5,4-d]pyrimidin-2-ol (8CI)

Name : Pyrimido[5,4-d]pyrimidin-4-ol (8CI)

Name : Pyrimido[5,4-d]pyrimidine (7CI,8CI,9CI)

Name : Pyrimido[5,4-d]pyrimidine, 1,2,3,4-tetrahydro- (8CI)

Name : Pyrimido[5,4-d]pyrimidine, 3,4,7,8-tetrahydro- (6CI)

Name : Pyrimido[5,4-d]pyrimidine, 3,4-dihydro- (6CI)

Name : Pyrimido[5,4-e]-1,2,4-dioxazine (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazin-5(6H)-one (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazin-5-amine (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazin-5-ol, 1,5-dihydro- (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazine (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazine, 1,2-dihydro-3-methyl- (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazine, 3-methyl- (9CI)

Name : Pyrimido[5,4-e]-1,2,4-triazine-5,7(1H,6H)-dione, 1,4-diacetyl-2,3,4,8-tetrahydro-6-methyl-

Name : Pyrimido[5,4-e]-as-triazin-3-ol (7CI,8CI)

Name : Pyrimido[5,4-e]-as-triazine, 1,2-dihydro- (8CI)

Name : Pyrimido[5,4-e]-as-triazine, 1,2-dihydro-1-methyl- (6CI,8CI)

Name : Pyrimido[5,4-e]-as-triazine, 1,2-dihydro-5-methyl- (7CI,8CI)

Name : Pyrimido[5,4-e]-as-triazine, 1,2-dihydro-7-methyl- (8CI)

Name : Pyrimido[5,4-f][1,4]oxazepine (9CI)

Name : Pyrimido[5,4-g]quinazoline-4,6(1H,7H)-dione, 5,10-dihydroxy-2,8-dimethyl- (9CI)

Name : Pyrimido[5,4-g]quinazoline-4,6(3H,7H)-dione, 5,10-dihydroxy-2,3,7,8-tetramethyl-

Name : Pyrimido[5,4:4,5]furo[2,3:4,5]cyclohepta[1,2:4,5]pyrrolo[2,3-d]pyrimidine-2,4,7,9(3H,8H)-tetrone, 1,10,12,13-tetrahydro-1,3,8,10-tetramethyl-13-phenyl-

Name : Pyrimido[5,4:4,5]furo[2,3:4,5]cyclohepta[1,2:4,5]pyrrolo[2,3-d]pyrimidinium, 2,3,4,7,8,9,10,13-octahydro-1,3,8,10-tetramethyl-2,4,7,9-tetraoxo-13-phenyl-

Name : Pyrimido[5,4:4,5]furo[3,2:4,5]cyclohepta[1,2:4,5]pyrrolo[2,3-d]pyrimidine-2,4,8,10(3H,9H)-tetrone, 1,5,6,7-tetrahydro-1,3,7,9-tetramethyl-6-phenyl- (9CI)

Name : Pyrimido[6,1-c][1,2,4]triazepine (9CI)

Name : Pyrocatechol, 3,4-diamino-5-methyl- (6CI)

Name : Pyrocatechol, 3-(2-imidazolin-2-yl)- (8CI)

Name : Pyrocatechol, 3-methyl-5-phenyl- (7CI)

Name : Pyrocatechol, 4,5-diamino-, di-HCl

Name : Pyrocatechol, 4-(1,3,6-cycloheptatrien-1-yl)- (8CI)

Name : Pyrocatechol, 4-(2-nitro-1-butenyl)- (7CI)

Name : Pyrocatechol, 4-(6-methyl-2-morpholinyl)- (6CI)

Name : Pyrocatechol, 4-amino-5-ethyl- (5CI)

Name : Pyrocatechol, 4-methyl-5-(2-morpholinyl)- (6CI)

Name : Pyrocatechol, 4-[2-(isopropylideneamino)-1-methoxyethyl]- (8CI)

Name : Pyroglutamic acid, 4-methyl-, hydrazide (6CI)

Name : Pyrrole, 1,4-dimethyl-2-vinyl- (6CI)

Name : Pyrrole, 1-(2-methylaminoethyl)- (6CI)

Name : Pyrrole, 1-(p-ethoxyphenyl)-3,5-dimethyl- (6CI)

Name : Pyrrole, 1-allyl-3-methyl- (7CI)

Name : Pyrrole, 1-ethyl-3-vinyl- (8CI)

Name : Pyrrole, 2,5-diisopropyl-1-methyl- (8CI)

Name : Pyrrole, 2-amino-3,4-diethyl-5-methyl- (4CI)

Name : Pyrrole, 2-[(3,4-dimethyl-2H-pyrrol-2-ylidene)methyl]-5-ethyl-3,4-dimethyl- (8CI)