Terazosin

Terazosin EP Impurity A Terazosin Impurity A:

4-Amino-2-chloro-6,7-dimethoxyquinazoline ; CAS : 23680-84-4 ; C10H10ClN3O2 ; MW: 239.66 ;
Terazosin EP Impurity B Terazosin Impurity B :

1-(4-Hydroxy-6,7-dimethoxyquinazolin-2-yl)-4-[[(2RS)-tetrahydrofuran-2-yl]carbonyl]piperazine ;

C19H24N4O5 ; MW: 388.42 ;
Terazosin EP Impurity C Terazosin Impurity C:

4-Amino-6,7-dimethoxy-2-(1-piperazinyl)quinazoline ; CAS : 60547-97-9 ; C14H19N5O2 ; MW: 289.33 ;
Terazosin EP Impurity D Terazosin Impurity D:

4-Amino-6,7-dimethoxy-2-(4-formyl-1-piperazinyl)quinazoline ;

C15H19O3 ; MW: 317.34 ;
Terazosin EP Impurity E Terazosin Impurity E:

2,2-(1,4-Piperazinediyl)bis[6,7-dimethoxy-4-quinazolinamine] ; CAS : 102839-00-9 ; C24H28N8O4 ; MW: 492.53 ;
Terazosin EP Impurity F Terazosin Impurity F :

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(5-hydroxypentanoyl)piperazine HCl ; CAS : 109678-71-9 (base) ; C19H28ClN5O4 ; MW: 425.91 ;
Terazosin EP Impurity G Terazosin Impurity G:

1-(4-Amino-6-hydroxy-7-methoxyquinazolin-2-yl)-4-[[(2RS)-tetrahydrofuran-2-yl]carbonyl]piperazine ; CAS : 105356-89-6 ; C18H23N5O4 ; MW: 373.41 ;
Terazosin EP Impurity H Terazosin Impurity H:

1-(4-Amino-7-hydroxy-6-methoxyquinazolin-2-yl)-4-[[(2RS)-tetrahydrofuran-2-yl]carbonyl]piperazine ; CAS : 105356-90-9 ;C18H23N5O4 ;MW: 373.41 ;
Terazosin EP Impurity I Terazosin Impurity I:

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-[[(2RS,5S)-5-methyltetrahydro furan-2-yl]carbonyl]piperazine ; CAS : 1177261-85-6 ; C20H27N5O4 ;MW: 401.46 ;
Terazosin EP Impurity J Terazosin Impurity J :

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-[(2RS)-2-hydroxypentanoyl] piperazine ; CAS : 152551-75-2 ; C19H27N5O4 ; MW: 389.45 ;
Terazosin EP Impurity J Terazosin Impurity K:

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(furan-2-ylcarbonyl)piperazine HCl ; CAS : 19237-84-4 ; C19H22ClN5O4 ; MW: 419.86 ;
Terazosin EP Impurity L Terazosin Impurity L:

1-(Furan-2-ylcarbonyl)piperazine ; CAS : 40172-95-0 ; C9H12N2O2 ; MW: 180.2 ;
Terazosin EP Impurity M Terazosin Impurity M:

Prazosin EP Impurity B ; 1,4-bis(Furan-2-ylcarbonyl)piperazine ; CAS : 31350-27-3 ;

C14H14N2O4 ; MW: 274.27 ;
Terazosin EP Impurity N Terazosin Impurity N:

1-[[(2RS)-Tetrahydrofuran-2-yl]carbonyl]piperazine ; CAS : 63074-07-7 ; C9H16N2O2 ; MW: 184.24 ;
Terazosin EP Impurity O Terazosin Impurity O:

1,4-bis[(tetrahydrofuran-2-yl)carbonyl]piperazine ; CAS : 547730-06-3 ; C14H22N2O4 ; MW: 282.34 ;