Ondansetron BP Impurity A ; Ondansetron USP RC A ; CAS # 119812-29-2 ; (3RS)-3-[(Dimethylamino)methyl]-9-methyl-1,2,3,9-tetrahydro-4H-carbazol-4-one ;

Ondansetron BP Impurity B ; Ondansetron Dimer ; Ondansetron USP RC B ; 6,6′-Methylene-bis[(3RS)-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-1,2,3,9-tetrahydro-4H-carbazol-4-one ;

Ondansetron BP Impurity C ; Ondansetron USP RC C ; CAS # 27387-31-1 ; 9-Methyl-1,2,3,9-tetrahydro-4H-carbazol-4-one ;

Ondansetron BP Impurity D ; Ondansetron USP RC D ; CAS # 99614-64-9 ; 9-Methyl-3-methylene-1,2,3,9-tetrahydro-4H-carbazol-4-one ;

Ondansetron BP Impurity E ; 1H-Imidazole ; CAS # 288-32-4 ;

Ondansetron BP Impurity F ; 2-Methyl-1H-imidazole ; CAS # 693-98-1 ;

Ondansetron BP Impurity G ; C-Desmethyl Ondansetron ; (3RS)-3-[(1H-Imidazol-1-yl)methyl]-9-Methyl-1,2,3,9-tetrahydro-4H-carbazol-4-one ;

Ondansetron BP Impurity H ; N-Desmethyl Ondansetron ; CAS # 9614-14-9 ;

1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one hydochloride dihydrate ; CAS # 99614-01-4 (anhydrous) ; 103639-04-9 (dihydrate) ;