Category starting in alphabetical order :

Amitriptyline

Amitriptyline EP Impurity A ;
Amitriptyline EP Impurity A ;
CAS No. : 1210-35-1 ;
Molecular Formula :

C15H12O ;

Amitriptyline EP Impurity B ;
Amitriptyline EP Impurity B ;
CAS No. : 6202-23-9 ;
Molecular Formula :

C20H22ClN ;

Amitriptyline EP Impurity C ;
Amitriptyline EP Impurity C ;
CAS No. : 894-71-3 (HCl salt) ; 72-69-5 (base) ;
Molecular Formula :

C19H22ClN ;

Amitriptyline EP Impurity D ;
Amitriptyline EP Impurity D ;
CAS No. : 1159-03-1 ;
Molecular Formula :

C20H25NO ;

Amitriptyline EP Impurity E ;
Amitriptyline EP Impurity E ;
CAS No. : 27867-02-3 ;
Molecular Formula :

C20H29N (base) ; C20H30ClN (HCl salt) ; 

Amitriptyline EP Impurity F ;
Amitriptyline EP Impurity F ;
CAS No. : 1246833-15-7 (oxalate salt) ; 1159-82-6 (base) ;
Molecular Formula :

C22H25NO5 (oxalate salt) ; C20H23NO (base) ; 

Amitriptyline EP Impurity G ;
Amitriptyline EP Impurity G ;
CAS No. : 1210-34-0 ;
Molecular Formula :

C15H14O ;

Amitriptyline Hydrochloride ;
Amitriptyline Hydrochloride ;
CAS No. : 549-18-8 ;
Molecular Formula :

C20H24ClN ;

Amitriptyline N-Oxide ;
Amitriptyline N-Oxide ;
CAS No. : 4317-14-0 ;
Molecular Formula :

C20H23NO ;