 
                  
                          CAS Number: NA 
                          Chemical Name: (E)-2-Cyano-3-(3,4-dihydroxy-2-nitrophenyl)-N,N-diethylacrylamide 
                          Molecular Formula: C14H15N3O5 
                          Molecular Weight: 305.29 
                        
 
                  
                          CAS Number: 150995-46-3 
                          Chemical Name: (E)-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-ethylacrylamide 
                          Molecular Formula: C12H11N3O5 
                          Molecular Weight: 277.24 
                        
 
                  
                          CAS Number: 1202160-40-4 
                          Chemical Name: (E)-2-Cyano-3-(4-hydroxy-3-methoxy-5-nitrophenyl)acrylic acid 
                          Molecular Formula: C11H8N2O6 
                          Molecular Weight: 264.19 
                        
 
                  
                          CAS Number: 857629-78-8 
                          Chemical Name: (E)-3-O-Methyl Entacapone 
                          Molecular Formula: C15H17N3O5 
                          Molecular Weight: 319.32 
                        
 
                  
                          CAS Number: 146698-91-1 
                          Chemical Name: (E/Z)-3-O-Methyl Entacapone 
                          Molecular Formula: C15H17N3O5 
                          Molecular Weight: 319.32 
                        
 
                  
                          CAS Number: 158693-01-7 
                          Chemical Name: 2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide 
                          Molecular Formula: C10H7N3O5 
                          Molecular Weight: 249.18 
                        
 
                  
                          CAS Number: 84211-30-3 
                          Chemical Name: 3,4-Dihydroxy-5-nitrobenzoic acid 
                          Molecular Formula: C7H5NO6 
                          Molecular Weight: 199.12 
                        
 
                  
                          CAS Number: 2514697-83-5 
                          Chemical Name: 5-Nitrovanillin Dimer Impurity 
                          Molecular Formula: C22H29N5O6 
                          Molecular Weight: 459.5 
                        
 
                  
                          CAS Number: 1185241-19-3 
                          Chemical Name: cis-Entacapone-d10 
                          Molecular Formula: C14H5D10N3O5 
                          Molecular Weight: 315.35 
                        
 
                  
                          CAS Number: NA 
                          Chemical Name: E-Entacapone-d10 
                          Molecular Formula: C14H5D10N3O5 
                          Molecular Weight: 315.35 
                        
 
                  
                          CAS Number: 130929-57-6 
                          Chemical Name: Entacapone 
                          Molecular Formula: C14H15N3O5 
                          Molecular Weight: 305.29 
                        
 
                  
                          CAS Number: 145195-63-7 
                          Chemical Name: (2Z)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide 
                          Molecular Formula: C14H15N3O5 
                          Molecular Weight: 305.29 
                        
 
                  
                          CAS Number: 1215039-66-9 
                          Chemical Name: Ethyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoate 
                          Molecular Formula: C12H10N2O6 
                          Molecular Weight: 278.22 
                        
 
                  
                          CAS Number: 116313-85-0 
                          Chemical Name: 3,4-Dihydroxy-5-nitrobenzaldehyde 
                          Molecular Formula: C7H5NO5 
                          Molecular Weight: 183.12 
                        
 
                  
                          CAS Number: 857629-79-9 
                          Chemical Name: (2E)-2-Cyano-3-(3-ethoxy-4-hydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide 
                          Molecular Formula: C16H19N3O5 
                          Molecular Weight: 333.34 
                        
                          CAS Number: 7659-29-2 
                          Chemical Name: 3,5-Dinitrobenzene-1,2-diol 
                          Molecular Formula: C6H4N2O6 
                          Molecular Weight: 200.11 
                        
 
                  
                          CAS Number: 160391-70-8 
                          Chemical Name: (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoic acid 
                          Molecular Formula: C10H6N2O6 
                          Molecular Weight: 250.16 
                        
 
                  
                          CAS Number: 1364322-41-7 
                          Chemical Name: (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-methyl-prop-2-enamide 
                          Molecular Formula: C11H9N3O5 
                          Molecular Weight: 263.21 
                        
 
                  
                          CAS Number: 1150310-15-8 
                          Chemical Name: (2E)-3-(3,4-Dihydroxy-5-nitrophenyl)-2-(piperidin-1-ylcarbonyl)prop-2-ennitrile 
                          Molecular Formula: C15H15N3O5 
                          Molecular Weight: 317.30 
                        
 
                  
                          CAS Number: 1364322-42-8 
                          Chemical Name: Propyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoate 
                          Molecular Formula: C13H12N2O6 
                          Molecular Weight: 292.24 
                        
 
                  
                          CAS Number: 158069-75-1 
                          Chemical Name: Entacapone 3-o-glucuronide 
                          Molecular Formula: C20H23N3O11 
                          Molecular Weight: 481.41 
                        
 
                  
                          CAS Number: 2518048-68-3 
                          Chemical Name: Entacapone Vanillin Dimer 
                          Molecular Formula: C21H28N4O4 
                          Molecular Weight: 400.47