Entacapone

Entacapone Entacapone :

(2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide ; CAS : 130929-57-6 ; C14H15N3O5 ; MW: 305.29 ;
Entacapone EP Impurity A Entacapone  Impurity A :

(2Z)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide ; CAS : 145195-63-7 ; C14H15N3O5 ; Mol. Wt.: 305.29 ;
Entacapone EP Impurity B Entacapone Impurity B:

Ethyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoate ; C12H10N2O6 ; MW: 278.22 ;
Entacapone EP Impurity C Entacapone Impurity C:

3,4-Dihydroxy-5-nitrobenzaldehyde ; CAS : 116313-85-0 ; C7H5N05 ; MW: 183.12 ;
Entacapone EP Impurity D Entacapone  Impurity D:

(2E)-2-Cyano-3-(3-ethoxy-4-hydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide ; CAS : 857629-79-9 ; C16H19N3O5 ; MW: 333.34 ;
Entacapone EP Impurity E Entacapone Impurity E:

3,5-Dinitrobenzene-1,2-diol ; 1,2-Dihydroxy-3,5-dinitrobenzene ; CAS : 7659-29-2 ;

C6H4N2O6 ; MW: 200.11 ;
Entacapone EP Impurity F Entacapone Impurity F:

(2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoic acid ; CAS : 160391-70-8 ; C10H6N2O6 ; MW: 250.16 ;
Entacapone EP Impurity G Entacapone Impurity G:

(2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N-methyl-prop-2-enamide ; C11H9N3O5 ; MW: 263.21 ;
Entacapone EP Impurity H Entacapone Impurity H:

(2E)-3-(3,4-Dihydroxy-5-nitrophenyl)-2-(piperidin-1-ylcarbonyl)prop-2-ennitrile ; CAS : 1150310-15-8 ; C15H15N3O5 ; MW: 317.3 ;
Entacapone EP Impurity I Entacapone  Impurity I :

Propyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoate ; CAS : 1364322-42-8 ;

C13H12N2O6 ; MW: 292.24 ;