| —— | 2-hydrazinyl-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d]pyrimidin-4(3H)-one | 1620563-98-5 | C17H13N5OS | 335.389 | 
                                                                                                                                            
                                        | —— | 6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-00-2 | C18H11N5OS | 345.384 | 
                                                                                                                                            
                                        | —— | 6-phenyl-8-(thiophen-2-yl)-3-thioxo-2,3-dihydropyrido[2,3-d][1,2,4]triazolo[4,3-a] pyrimidin-5(1H)-one | 1620564-02-4 | C18H11N5OS2 | 377.45 | 
                                                                                                                                            
                                        | —— | 2-(2-benzylidenehydrazinyl)-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d]pyrimidin-4(3H)-one | 1620563-99-6 | C24H17N5OS | 423.498 | 
                                                                                                                                            
                                        | —— | 2-(2-(4-methylbenzylidene)hydrazinyl)-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d]pyrimidin-4(3H)-one | 1620564-17-1 | C25H19N5OS | 437.525 | 
                                                                                                                                            
                                        | —— | 2-(2-(4-fluorobenzylidene)hydrazinyl)-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d]pyrimidin-4(3H)-one | 1620564-15-9 | C24H16FN5OS | 441.488 | 
                                                                                                                                            
                                        | —— | (2-(4-chlorobenzylidene)hydrazinyl)-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d]pyrimidin-4(3H)-one | 1620564-16-0 | C24H16ClN5OS | 457.943 | 
                                                                                                                                            
                                        | —— | 2-(2-(4-methoxybenzylidene)hydrazinyl)-5-phenyl-7-(thiophen-2-yl)pyrido[2,3-d] pyrimidin-4(3H)-one | 1620564-18-2 | C25H19N5O2S | 453.524 | 
                                                                                                                                            
                                        | —— | 6-phenyl-8-(thiophen-2-yl)-1,2-dihydropyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidine-3,5-dione | 1620564-01-3 | C18H11N5O2S | 361.384 | 
                                                                                                                                            
                                        | —— | 3-amino-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-03-5 | C18H12N6OS | 360.399 | 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
                                        | —— | 3-methyl-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-04-6 | C19H13N5OS | 359.411 | 
                                                                                                                                            
                                        | —— | 3-acetyl-1,6-diphenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-05-7 | C26H17N5O2S | 463.519 | 
                                                                                                                                            
                                        | —— | 3-acetyl-1-(4-fluorophenyl)-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo [4,3-a]pyrimidin-5(1H)-one | 1620564-06-8 | C26H16FN5O2S | 481.51 | 
                                                                                                                                            
                                        | —— | 3-acetyl-1-(4-chlorophenyl)-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo [4,3-a]pyrimidin-5(1H)-one | 1620564-07-9 | C26H16ClN5O2S | 497.964 | 
                                                                                                                                            
                                        | —— | 3-acetyl-6-phenyl-8-(thiophen-2-yl)-1-p-tolylpyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-08-0 | C27H19N5O2S | 477.546 | 
                                                                                                                                            
                                        | —— | 3-acetyl-1-(4-methoxyphenyl)-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one | 1620564-09-1 | C27H19N5O3S | 493.546 | 
                                                                                                                                            
                                        | —— | 4-(3-acetyl-5-oxo-6-phenyl-8-(thiophen-2-yl)pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-1(5H)-yl)benzenesulfonamide | 1620564-10-4 | C26H18N6O4S2 | 542.599 | 
                                                                                                                                            
                                        | —— | ethyl 5-oxo-1,6-diphenyl-8-(thiophen-2-yl)-1,5-dihydropyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate | 1620564-11-5 | C27H19N5O3S | 493.546 | 
                                                                                                                                            
                                        | —— | ethyl 1-(4-chlorophenyl)-5-oxo-6-phenyl-8-(thiophen-2-yl)-1,5-dihydropyrido[2,3-d] [1,2,4]triazolo[4,3-a]pyrimidine-3-carboxylate | 1620564-12-6 | C27H18ClN5O3S | 527.991 | 
                                                                                                                                            
                                        | —— | ethyl 5-oxo-6-phenyl-8-(thiophen-2-yl)-1-p-tolyl-1,5-dihydropyrido[2,3-d][1,2,4] triazolo[4,3-a]pyrimidine-3-carboxylate | 1620564-13-7 | C28H21N5O3S | 507.572 |