| —— | 
                                        5-Methyl-8-oxo-3-piperidin-1-yl-5,8-dihydro-pyrido[2,3-e][1,2,4]triazine-7-carboxylic acid ethyl ester | 
                                        75824-37-2 | 
                                        C15H19N5O3 | 
                                        317.348 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        5-Methyl-8-oxo-3-pyrrolidin-1-yl-5,8-dihydro-pyrido[2,3-e][1,2,4]triazine-7-carboxylic acid ethyl ester | 
                                        75824-35-0 | 
                                        C14H17N5O3 | 
                                        303.321 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3-(4-Benzyl-piperazin-1-yl)-5-methyl-8-oxo-5,8-dihydro-pyrido[2,3-e][1,2,4]triazine-7-carboxylic acid ethyl ester | 
                                        75824-39-4 | 
                                        C21H24N6O3 | 
                                        408.46 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        5-Ethyl-8-oxo-3-piperidin-1-yl-5,8-dihydro-pyrido[2,3-e][1,2,4]triazine-7-carboxylic acid ethyl ester | 
                                        75824-26-9 | 
                                        C16H21N5O3 | 
                                        331.374 |