Meet KM Pharma at CPHI Milan on October 06-08, 2026 - Booth No. 4J104 Book a meeting

Quetiapine EP Impurity W

Quetiapine EP Impurity W
Catalog No. KMQ001057
CAS No. 1800608-95-0
Formula C34H32N4O2S2
FW 592.8
Unit Price Stock
100 mg Enquire Enquire
Chemical Name 11-(4-[2-[2-(dibenzo[b,f][1,4]thiazepin-11-yloxy)ethoxy]ethyl]piperazin-1-yl)dibenzo[b,f][1,4]thiazepine
Purity >95%
Storage Store at 2-8 deg. C for long term storage
Shipping Product is stable to be Shipped at Room Temperature
Download MSDS
Download COA

Related Products

1-(2-(2-methoxyethoxy)ethyl)piperazine

1-(2-(2-methoxyethoxy)ethyl)piperazine

CAS No. : 68465-66-7

CAT No. : KMQ001001

Formula : C9H20N2O2

FW : 188.27

View Details
Quetiapine Desethoxy Impurity

Quetiapine Desethoxy Impurity

CAS No. : 329216-67-3

CAT No. : KMQ001002

Formula : C19H21N3OS

FW : 339.45

View Details
Quetiapine Related Compound B

Quetiapine Related Compound B

CAS No. : 111974-74-4

CAT No. : KMQ001003

Formula : C17H17N3S : 2(HCl)

FW : 295.4 : 2(36.5)

View Details
Quetiapine Related Compound G

Quetiapine Related Compound G

CAS No. : 3159-07-7

CAT No. : KMQ001004

Formula : C13H9NOS

FW : 227.28

View Details
Quetiapine Fumarate

Quetiapine Fumarate

CAS No. : 111974-72-2

CAT No. : KMQ001005

Formula : C21H25N3O2S : 1/2(C4H4O4)

FW : 383.5 : 1/2(116.1)

View Details
Nitroso HEEP

Nitroso HEEP

CAS No. : 73486-81-4

CAT No. : KMQ001006

Formula : C8H17N3O3

FW : 203.24

View Details
Nitroso Piperazine Ethanol

Nitroso Piperazine Ethanol

CAS No. : 48121-20-6

CAT No. : KMQ001007

Formula : C6H13N3O2

FW : 159.19

View Details
Quetiapine HEEP Impurity

Quetiapine HEEP Impurity

CAS No. : 13349-82-1

CAT No. : KMQ001008

Formula : C8H18N2O2

FW : 174.24

View Details
Quetiapine 11 Chloro Impurity

Quetiapine 11 Chloro Impurity

CAS No. : 13745-86-3

CAT No. : KMQ001017

Formula : C13H8ClNS

FW : 245.7

View Details
Quetiapine DBTO Sulfone

Quetiapine DBTO Sulfone

CAS No. : 22871-33-6

CAT No. : KMQ001026

Formula : C13H9NO3S

FW : 259.3

View Details
Quetiapine DBTP N-Methyl Impurity

Quetiapine DBTP N-Methyl Impurity

CAS No. : 1977-09-9

CAT No. : KMQ001028

Formula : C18H19N3S

FW : 309.4

View Details
Quetiapine Diether Alcohol

Quetiapine Diether Alcohol

CAS No. : 329216-69-5

CAT No. : KMQ001029

Formula : C23H29N3O3S

FW : 427.6

View Details
Quetiapine Diether Alcohol (HCl salt)

Quetiapine Diether Alcohol (HCl salt)

CAS No. : NA

CAT No. : KMQ001030

Formula : C23H29N3O3S . HCl

FW : 427.6 : 36.5

View Details
Quetiapine EP Impuirty I

Quetiapine EP Impuirty I

CAS No. : 329216-67-3

CAT No. : KMQ001032

Formula : C19H21N3OS

FW : 339.5

View Details
Quetiapine EP Impuirty I (Fumarate salt)

Quetiapine EP Impuirty I (Fumarate salt)

CAS No. : 2734403-85-9

CAT No. : KMQ001033

Formula : C19H21N3OS : C4H4O4

FW : 339.5 : 116.1

View Details
Quetiapine EP Impurity A

Quetiapine EP Impurity A

CAS No. : 844639-07-2

CAT No. : KMQ001034

Formula : C23H27N3O3S

FW : 425.5

View Details
Quetiapine EP Impurity B (dihydrochloride salt)

Quetiapine EP Impurity B (dihydrochloride salt)

CAS No. : 111974-74-4

CAT No. : KMQ001035

Formula : C17H17N3S : 2(HCl)

FW : 295.4 : 2(36.5)

View Details
Quetiapine EP Impurity B (Fumarate salt)

Quetiapine EP Impurity B (Fumarate salt)

CAS No. : 937731-18-5

CAT No. : KMQ001036

Formula : C17H17N3S : C4H4O4

FW : 295.4 : 116.1

View Details
Quetiapine EP Impurity C

Quetiapine EP Impurity C

CAS No. : 1798840-31-9

CAT No. : KMQ001037

Formula : C40H42N6O3S2

FW : 718.9

View Details
Quetiapine EP Impurity E

Quetiapine EP Impurity E

CAS No. : 1371638-05-9

CAT No. : KMQ001039

Formula : C40H44N6O2S2

FW : 704.9

View Details
Quetiapine EP Impurity F

Quetiapine EP Impurity F

CAS No. : 848814-27-7

CAT No. : KMQ001040

Formula : C21H27N3O3S

FW : 401.5

View Details
Quetiapine EP Impurity G

Quetiapine EP Impurity G

CAS No. : 3159-07-7

CAT No. : KMQ001041

Formula : C13H9NOS

FW : 227.3

View Details
Quetiapine EP Impurity H

Quetiapine EP Impurity H

CAS No. : 1076199-40-0

CAT No. : KMQ001042

Formula : C21H25N3O3S

FW : 399.5

View Details
Quetiapine EP Impurity I (2HCl Salt)

Quetiapine EP Impurity I (2HCl Salt)

CAS No. : 329218-14-6

CAT No. : KMQ001043

Formula : C19H21N3OS : 2HCl

FW : 339.5 : 2(36.5)

View Details
Quetiapine EP Impurity J

Quetiapine EP Impurity J

CAS No. : 1356906-17-6

CAT No. : KMQ001044

Formula : C25H33N3O4S

FW : 471.6

View Details
Quetiapine EP Impurity K

Quetiapine EP Impurity K

CAS No. : 1371638-10-6

CAT No. : KMQ001045

Formula : C23H29N3O4S

FW : 443.6

View Details
Quetiapine EP Impurity L

Quetiapine EP Impurity L

CAS No. : 1371638-11-7

CAT No. : KMQ001046

Formula : C21H24ClN3O2S

FW : 418

View Details
Quetiapine EP Impurity N

Quetiapine EP Impurity N

CAS No. : 1800291-86-4

CAT No. : KMQ001047

Formula : C29H41N5O3S

FW : 539.7

View Details
Quetiapine EP Impurity O

Quetiapine EP Impurity O

CAS No. : 844639-06-1

CAT No. : KMQ001048

Formula : C40H39N3O2S

FW : 625.8

View Details
Quetiapine EP Impurity P

Quetiapine EP Impurity P

CAS No. : 1011758-03-4

CAT No. : KMQ001049

Formula : C19H21N3S

FW : 323.5

View Details
Quetiapine EP Impurity P HCl Salt

Quetiapine EP Impurity P HCl Salt

CAS No. : NA

CAT No. : KMQ001050

Formula : C19H21N3S : HCl

FW : 323.5 : 36.5

View Details
Quetiapine EP Impurity Q

Quetiapine EP Impurity Q

CAS No. : NA

CAT No. : KMQ001051

Formula : C25H34N3O4S : I

FW : 472.6 : 126.9

View Details
Quetiapine EP Impurity S

Quetiapine EP Impurity S

CAS No. : 329216-63-9

CAT No. : KMQ001052

Formula : C21H25N3O3S

FW : 399.5

View Details
Quetiapine EP Impurity T

Quetiapine EP Impurity T

CAS No. : 5747-46-6

CAT No. : KMQ001054

Formula : C17H16N2OS

FW : 296.4

View Details
Quetiapine EP Impurity V

Quetiapine EP Impurity V

CAS No. : 2204369-14-0

CAT No. : KMQ001056

Formula : C21H25N3O2

FW : 351.5

View Details
Quetiapine Hemifumarate

Quetiapine Hemifumarate

CAS No. : 111974-72-2

CAT No. : KMQ001060

Formula : C21H25N3O2S : 1/2(C4H4O4)

FW : 383.5 : 1/2(116.1)

View Details
Quetiapine Impurity (2-Aminodiphenyl Sulfide)

Quetiapine Impurity (2-Aminodiphenyl Sulfide)

CAS No. : 1134-94-7

CAT No. : KMQ001062

Formula : C12H11NS 

FW : 201.3

View Details
Quetiapine Impurity 15

Quetiapine Impurity 15

CAS No. : 37539-80-3

CAT No. : KMQ001069

Formula : C13H8ClNS

FW : 245.7

View Details
Quetiapine Impurity 3

Quetiapine Impurity 3

CAS No. : 102893-57-2

CAT No. : KMQ001076

Formula : C25H20N2OS2 

FW : 428.6

View Details
Quetiapine Impurity 5

Quetiapine Impurity 5

CAS No. : 837383-82-1

CAT No. : KMQ001077

Formula : C17H19N3OS 

FW : 313.4

View Details
Quetiapine Impurity 8

Quetiapine Impurity 8

CAS No. : 1126432-68-5

CAT No. : KMQ001080

Formula : C30H28N4O2S2 

FW : 540.7

View Details
Quetiapine Impurity 9

Quetiapine Impurity 9

CAS No. : 2206606-99-5

CAT No. : KMQ001081

Formula : C22H26N4OS 

FW : 394.5

View Details
Quetiapine Impurity R

Quetiapine Impurity R

CAS No. : 2459-05-4

CAT No. : KMQ001083

Formula : C6H8O4

FW : 144.1

View Details
Quetiapine Related Compound (Phenyl-2-(phenyl thio)phenyl carbamide)

Quetiapine Related Compound (Phenyl-2-(phenyl thio)phenyl carbamide)

CAS No. : 111974-73-3

CAT No. : KMQ001086

Formula : C19H15NO2S 

FW : 321.4

View Details
Quetiapine 2-Hydroxy Impurity

Quetiapine 2-Hydroxy Impurity

CAS No. : 1241800-24-7

CAT No. : KMQ001018

Formula : C21H27N3O3S 

FW : 401.5

View Details
Quetiapine EP Impurity D

Quetiapine EP Impurity D

CAS No. : 945668-94-0

CAT No. : KMQ001038

Formula : C30H24N4S2

FW : 504.7

View Details
Quetiapine EP Impurity S HCl Salt

Quetiapine EP Impurity S HCl Salt

CAS No. : 329218-11-3

CAT No. : KMQ001053

Formula : C21H25N3O3S : 2HCl

FW : 399.5 : 2(36.5)

View Details
2-amino biphenyl sulphide and phenyl-2-(phenylthio)-phenylcarbamate

2-amino biphenyl sulphide and phenyl-2-(phenylthio)-phenylcarbamate

CAS No. : NA

CAT No. : KMQ001009

Formula : C19H14NO2S : C12H11NS

FW : 320.4 : 201.3

View Details
2-Nitro-4'-Chlorodiphenyl Sulfide

2-Nitro-4'-Chlorodiphenyl Sulfide

CAS No. : 6764-10-9

CAT No. : KMQ001010

Formula : C12H8ClNO2S 

FW : 265.7

View Details
7-Hydroxy Quetiapine

7-Hydroxy Quetiapine

CAS No. : 139079-39-3

CAT No. : KMQ001011

Formula : C21H25N3O3S

FW : 399.5

View Details
N,N′-Bis(hydroxyethoxyethyl)piperazine

N,N′-Bis(hydroxyethoxyethyl)piperazine

CAS No. : 14258-43-6

CAT No. : KMQ001015

Formula : C12H26N2O4

FW : 262.4

View Details
Quetiapine

Quetiapine

CAS No. : 111974-69-7

CAT No. : KMQ001016

Formula : C21H25N3O2S 

FW : 383.5

View Details
Quetiapine 7-Hydroxy Impurity

Quetiapine 7-Hydroxy Impurity

CAS No. : NA

CAT No. : KMQ001019

Formula : C21H25N3O3S : HCl

FW : 399.5 : 36.5

View Details
Quetiapine 7-Hydroxy Sulfoxide

Quetiapine 7-Hydroxy Sulfoxide

CAS No. : 1185170-04-0

CAT No. : KMQ001020

Formula : C21H25N3O4S

FW : 415.5

View Details
Quetiapine Carboxylate Impurity

Quetiapine Carboxylate Impurity

CAS No. : 1011758-00-1

CAT No. : KMQ001021

Formula : C22H25N3O4S

FW : 427.5

View Details
Quetiapine DBTC Sulfone

Quetiapine DBTC Sulfone

CAS No. : 52264-22-9

CAT No. : KMQ001025

Formula : C13H8ClNO2S

FW : 277.7

View Details
Quetiapine DBTP 7-Hydroxy Metabolite

Quetiapine DBTP 7-Hydroxy Metabolite

CAS No. : 232597-73-8

CAT No. : KMQ001027

Formula : C17H17N3OS

FW : 311.4

View Details
Quetiapine Dipiperazine Monoether Impurity

Quetiapine Dipiperazine Monoether Impurity

CAS No. : NA

CAT No. : KMQ001031

Formula : C27H37N5O2S : HCl

FW : 495.7 : 36.5

View Details
Quetiapine EP Impurity U

Quetiapine EP Impurity U

CAS No. : 1176987-11-3 (HCl salt)

CAT No. : KMQ001055

Formula : C13H10N2S : HCl

FW : 226.3 : 36.5

View Details
Quetiapine Ethyl Ether (Fumarate)

Quetiapine Ethyl Ether (Fumarate)

CAS No. : 2470241-46-2

CAT No. : KMQ001058

Formula : C23H29N3O2S : C4H4O4

FW : 411.6 : 116.1

View Details
Quetiapine Hemifumarate Ester

Quetiapine Hemifumarate Ester

CAS No. : 2209488-73-1

CAT No. : KMQ001061

Formula : C25H27N3O5S 

FW : 481.6

View Details
Quetiapine Impurity 1

Quetiapine Impurity 1

CAS No. : 2749415-72-1

CAT No. : KMQ001063

Formula : C24H33N3O2S 

FW : 427.6

View Details
Quetiapine Impurity 10

Quetiapine Impurity 10

CAS No. : 2206135-48-8

CAT No. : KMQ001064

Formula : C14H11NOS 

FW : 241.3

View Details
Quetiapine Impurity 11

Quetiapine Impurity 11

CAS No. : 2206607-04-5

CAT No. : KMQ001065

Formula : C15H13NOS 

FW : 255.3

View Details
Quetiapine Impurity 12

Quetiapine Impurity 12

CAS No. : 2206135-50-2

CAT No. : KMQ001066

Formula : C25H18N2S2 

FW : 410.6

View Details
Quetiapine Impurity 13

Quetiapine Impurity 13

CAS No. : NA

CAT No. : KMQ001067

Formula : C21H24N3OS : Cl

FW : 366.5 : 35.5

View Details
Quetiapine Impurity 14

Quetiapine Impurity 14

CAS No. : 2206607-05-6

CAT No. : KMQ001068

Formula : C23H28ClN3O2S 

FW : 446

View Details
Quetiapine Impurity 2

Quetiapine Impurity 2

CAS No. : 2748292-45-5

CAT No. : KMQ001070

Formula : C22H27N3O4S 

FW : 429.5

View Details
Quetiapine Impurity 21

Quetiapine Impurity 21

CAS No. : 2108892-53-9

CAT No. : KMQ001071

Formula : C21H25N3O2S

FW : 383.5

View Details
Quetiapine Impurity 22

Quetiapine Impurity 22

CAS No. : 140425-65-6

CAT No. : KMQ001072

Formula : C13H10N2S

FW : 226.3

View Details
Quetiapine Impurity 23

Quetiapine Impurity 23

CAS No. : 54920-98-8

CAT No. : KMQ001073

Formula : C13H11NO2S

FW : 245.3

View Details
Quetiapine Impurity 24

Quetiapine Impurity 24

CAS No. : 20290-48-6

CAT No. : KMQ001074

Formula : C13H9NO2S

FW : 243.3

View Details
Quetiapine Impurity 25

Quetiapine Impurity 25

CAS No. : 68465-66-7

CAT No. : KMQ001075

Formula : C9H20N2O2

FW : 188.3

View Details
Quetiapine Impurity 6

Quetiapine Impurity 6

CAS No. : 1514918-27-4

CAT No. : KMQ001078

Formula : C21H25N3O4S 

FW : 415.5

View Details
Quetiapine Impurity 7

Quetiapine Impurity 7

CAS No. : 2206606-97-3

CAT No. : KMQ001079

Formula : C21H25N3O5S 

FW : 431.5

View Details
Quetiapine impurity IV 

Quetiapine impurity IV 

CAS No. : NA

CAT No. : KMQ001082

Formula : C23H30N3O3S

FW : 428.6

View Details
Quetiapine Sulfone (HCl Salt)

Quetiapine Sulfone (HCl Salt)

CAS No. : 329218-13-5

CAT No. : KMQ001087

Formula : C21H25N3O4S : HCl

FW : 415.5 : 36.5

View Details
Quetiapine D4 Fumarate (Possibility 2)

Quetiapine D4 Fumarate (Possibility 2)

CAS No. : 1331636-50-0

CAT No. : KMQ001023

Formula : C21H21D4N3O2S : C4H4O4

FW : 387.5 : 116.1

View Details
Quetiapine D4 Fumarate (Possibility 1)

Quetiapine D4 Fumarate (Possibility 1)

CAS No. : 1287376-15-1

CAT No. : KMQ001022

Formula : C21H21D4N3O2S : C4H4O4

FW : 387.5 : 116.1

View Details
Quetiapine D4 Hemifumarate

Quetiapine D4 Hemifumarate

CAS No. : NA

CAT No. : KMQ001024

Formula : C21H21D4N3O2S : 1/2(C4H4O4)

FW : 387.5 : 1/2(116.1)

View Details
N-Nitroso Quetiapine EP Impurity B D8

N-Nitroso Quetiapine EP Impurity B D8

CAS No. : NA

CAT No. : KMQ001012

Formula : C17H8D8N4OS

FW : 332.5

View Details
N-Nitroso Quetiapine Impurity

N-Nitroso Quetiapine Impurity

CAS No. : 73486-81-4

CAT No. : KMQ001014

Formula : C8H17N3O3

FW : 203.2

View Details
Quetiapine Nitroso EP Impurity B

Quetiapine Nitroso EP Impurity B

CAS No. : Not Available

CAT No. : KMQ001084

Formula : C17H16N4OS

FW : 324.4

View Details
Quetiapine Nitroso Impurity 1

Quetiapine Nitroso Impurity 1

CAS No. : 2101854-40-2

CAT No. : KMQ001085

Formula : C13H10N2OS

FW : 242.3

View Details
N-Nitroso Quetiapine EP Impurity G

N-Nitroso Quetiapine EP Impurity G

CAS No. : NA

CAT No. : KMQ001013

Formula : C13H8N2O2S

FW : 256.3

View Details
Quetiapine HEEP Impurity

Quetiapine HEEP Impurity

CAS No. : 13349-82-1

CAT No. : KMQ001059

Formula : C8H18N2O2

FW : 174.2

View Details

About Us

K. M. Pharma Solution Pvt. Ltd., India (CIN: U72100GJ2023PTC141278), is a leading, innovation-driven company accredited by FDCA, GMP-GLP, ISO 9001:2015, and NABL (ISO/IEC 17025 & ISO 17034). Specializing in the design, synthesis, and characterization of pharmaceutical impurity standards and reference materials, we offer an extensive portfolio including nitrosamine impurities, pharmacopeial and non-pharmacopeial impurities, drug metabolites, glucuronides, process degradants, excipient-related impurities, unknown impurity isolation & structural elucidation, and stable isotope-labeled compounds.

As an integrated Contract Research, Development & Manufacturing Organization (CRDMO), we provide end-to-end scientific services — from early-stage discovery through to commercial supply — with a strong focus on quality, compliance, and customer satisfaction.

Contact Us

  • Unit No.101, Shivam Industrial park,
    Sarkhej-bavala NH=8A, At-Moraiya, Changodar,
    Ahmedabad (Gujarat), India - 382213
  • contact@kmpharma.in
  • +91 9898822121

© 2026 K.M.Pharma. All Rights Reserved