quetiapine and its Impurities
This compound is also known as QUETIAPINE DIMER present as an impurity in antipsychotic drug Quetiapine. Reference standards of Quetiapine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

![2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazi PA STI 089304](https://www.pharmaffiliates.com/pimages/PASTI089304.jpg)
2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethan-1,1,2,2-d4-1-ol but-2-enedioate
2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethan-1,1,2,2-d4-1-ol but-2-enedioate
Catalogue No.:PA STI 089304
CAS :
1287376-15-1
Molecular Formula : C25H25D4N3O6S
Molecular Weight : 503.61

![2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazi PAI 17 002005](https://www.pharmaffiliates.com/pimages/PAI17002005.jpg)
2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethyl 4-methylbenzenesulfonate
2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethyl 4-methylbenzenesulfonate
Catalogue No.:PAI 17 002005
CAS :
NA
Molecular Formula : C28H31N3O4S2
Molecular Weight : 537.69

![tert-Butyl 4-(2-(2-(4-(dibenzo[b,f][1,4]thiazepin- PAI 17 002008](https://www.pharmaffiliates.com/pimages/PAI17002008.jpg)
tert-Butyl 4-(2-(2-(4-(dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethyl)piperazine-1-carboxylate
tert-Butyl 4-(2-(2-(4-(dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethyl)piperazine-1-carboxylate
Catalogue No.:PAI 17 002008
CAS :
1800291-88-6
Molecular Formula : C30H41N5O3S
Molecular Weight : 551.75


11-(4-(2-(2-hydroxyethoxy)ethyl)piperazin-1-yl)-10,11-dihydrodibenzo[b,f][1,4]thiazepin-11-ol
11-(4-(2-(2-Hydroxyethoxy)ethyl)piperazin-1-yl)-10,11-dihydrodibenzo[b,f][1,4]thiazepin-11-ol
Catalogue No.:PA 17 0021024
CAS :
1241800-24-7
Molecular Formula : C21H27N3O3S
Molecular Weight : 401.53