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Impurities

SynThink is a producer and supplier of a number of pharmaceutical Reference Standards (Impurity Standards) which are required for pharmaceutical companies to study quality, stability and biological safety of pharmaceutical products. Many API Impurities are available in our stock.

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Febuxostat, Impurities

Febuxostat

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In Stock

CAS No.

: 144060-53-7

Mol F.

: C16H16N2O3S

Mol W.

: 316.37

Cat No.

: SA32000

Febuxostat, Impurities

Febuxostat 2-Butyl Isomer

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In Stock

CAS No.

: 1335202-59-9

Mol F.

: C16H16N2O3S

Mol W.

: 316.37

Cat No.

: SA32002

Febuxostat, Impurities

Febuxostat Amide Impurity

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In Stock

CAS No.

: 1239233-86-3

Mol F.

: C16H18N2O4S

Mol W.

: 334.39

Cat No.

: SA32010

Febuxostat, Impurities

Febuxostat Ethyl Ester

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In Stock

CAS No.

: 160844-75-7

Mol F.

: C18H20N2O3S

Mol W.

: 344.43

Cat No.

: SA32019

Febuxostat, Impurities

Febuxostat Isopropyl Ester

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In Stock

CAS No.

: 1346238-10-5

Mol F.

: C19H22N2O3S

Mol W.

: 358.45

Cat No.

: SA32005

Febuxostat, Impurities

Febuxostat Isopropyl Isomer

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In Stock

CAS No.

: 144060-52-6

Mol F.

: C15H14N2O3S

Mol W.

: 302.35000000000002

Cat No.

: SA32001

Febuxostat, Impurities

Febuxostat n-Butyl Isomer

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In Stock

CAS No.

: 1657014-33-9

Mol F.

: C16H16N2O3S

Mol W.

: 316.37

Cat No.

: SA32006

Febuxostat, Impurities

FEBUXOSTAT SYSTEM SUITABILITY MIXTURE

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In Stock

CAS No.

: NA

Mol F.

: C35H38N4O6S2

Mol W.

: 674.83

Cat No.

: SA32022

Felodipine, Impurities

Felodipine

Please enquire for price & pack size

In Stock

CAS No.

: 72509-76-3

Mol F.

: C18H19Cl2NO4

Mol W.

: 384.25

Cat No.

: SA37100

Felodipine, Impurities

Felodipine EP Impurity A

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In Stock

CAS No.

: 96382-71-7

Mol F.

: C18H17Cl2NO4

Mol W.

: 382.23

Cat No.

: SA37101

Felodipine, Impurities

Felodipine EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 91189-59-2

Mol F.

: C17H17Cl2NO4

Mol W.

: 370.22

Cat No.

: SA37102

Felodipine, Impurities

Felodipine EP Impurity C

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C19H21Cl2NO4

Mol W.

: 398.28

Cat No.

: SA37103

Fenofibrate, Impurities

Fenofibrate

Please enquire for price & pack size

In Stock

CAS No.

: 49562-28-9

Mol F.

: C20H21ClO4

Mol W.

: 360.83

Cat No.

: SA27200

Fenofibrate, Impurities

Fenofibrate EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 42019-78-3

Mol F.

: C13H9ClO2

Mol W.

: 232.66

Cat No.

: SA27201

Fenofibrate, Impurities

Fenofibrate EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 42017-89-0

Mol F.

: C17H15ClO4

Mol W.

: 318.75

Cat No.

: SA27202

Fenofibrate, Impurities

Fenofibrate EP Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 42019-07-8

Mol F.

: C18H17Cl04

Mol W.

: 332.78

Cat No.

: SA27204

Fenofibrate, Impurities

Fenofibrate EP Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 42019-08-9

Mol F.

: C19H19ClO4

Mol W.

: 346.8

Cat No.

: SA27205

Fenofibrate, Impurities

Fenofibrate EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 217636-48-1

Mol F.

: C24H27ClO6

Mol W.

: 446.92

Cat No.

: SA27207

Flumethasone, Impurities

Flumethasone Impurity 2

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In Stock

CAS No.

: 1744-64-5

Mol F.

: C22H28ClFO5

Mol W.

: 426.91

Cat No.

: SA50101

Flunisolide, Impurities

Flunisolide Related Compound B

Please enquire for price & pack size

In Stock

CAS No.

: 1997-76-8

Mol F.

: C24H29FO6

Mol W.

: 432.48

Cat No.

: SA47502

Flunisolide, Impurities

Flunisolide Related Compound D

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C24H30BrFO6

Mol W.

: 513.39

Cat No.

: SA47504

Fluorometholone, Impurities

Fluorometholone 11,17-Diacetate

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C26H33FO6

Mol W.

: 460.53

Cat No.

: SA38403

Fluorometholone, Impurities

Fluorometholone 6-Desmethyl

Please enquire for price & pack size

In Stock

CAS No.

: 426-20-0

Mol F.

: C21H27FO4

Mol W.

: 362.43

Cat No.

: SA38404

Fluorometholone, Impurities

Fluorometholone Acetate 6,9(11)-diene

Please enquire for price & pack size

In Stock

CAS No.

: 95955-20-7

Mol F.

: C₂₄H₂₈O₄

Mol W.

: 380.48

Cat No.

: SA38407

Fluorometholone, Impurities

Fluorometholone Epoxy Metradiene

Please enquire for price & pack size

In Stock

CAS No.

: 83873-16-9

Mol F.

: C22H28O3

Mol W.

: 356.46

Cat No.

: SA38406

Fluorometholone, Impurities

Fluorometholone USP Related Ccompound A

Please enquire for price & pack size

In Stock

CAS No.

: 6870-94-6

Mol F.

: C22H30O4

Mol W.

: 358.46

Cat No.

: SA38402

FLUOXYMESTERONE, Impurities

Fluoxymesterone API

Please enquire for price & pack size

In Stock

CAS No.

: 76-43-7

Mol F.

: C20H29FO3

Mol W.

: 336.44

Cat No.

: SA51200

Fluphenazine, Impurities

Fluphenazine

Please enquire for price & pack size

In Stock

CAS No.

: 69-23-8

Mol F.

: C22H26F3N3OS

Mol W.

: 437.52

Cat No.

: SA39300

Flurbiprofen, Impurities

Flurbiprofen EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 1797883-74-9

Mol F.

: C18H17FO4

Mol W.

: 316.32

Cat No.

: SA14602

Flurbiprofen, Impurities

Flurbiprofen EP Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 42771-79-9

Mol F.

: C14H11FO

Mol W.

: 214.23

Cat No.

: SA14601

Flurbiprofen, Impurities

Flurbiprofen EP Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 137045-30-8

Mol F.

: C13H9FO2

Mol W.

: 216.21

Cat No.

: SA14605

Fluticasone Furoate, Impurities

Fluticasone 11-Keto Impurity

$250.00 25 mg

In Stock

CAS No.

: 397864-56-1

Mol F.

: C27H27F3O6S

Mol W.

: 536.56

Cat No.

: SA48215

Fluticasone Propionate, Impurities

Fluticasone Carbothioic Acid Impurity

$300.00 25 mg

In Stock

CAS No.

: 80474-45-9

Mol F.

: C24H30F2O5S

Mol W.

: 468.55

Cat No.

: SA47020

Fluticasone Propionate, Impurities

Fluticasone Carboxylic Acid Impurity; Fluticasone USP Related Compound J

$300.00 25 mg

In Stock

CAS No.

: 28416-82-2

Mol F.

: C21H26F2O5

Mol W.

: 396.42

Cat No.

: SA47017

Fluticasone Furoate, Impurities

Fluticasone Dimer Impurity

$1,600.00 25 mg

In Stock

CAS No.

: 220589-37-7

Mol F.

: C43H51F5O8S

Mol W.

: 822.93

Cat No.

: SA48209

Fluticasone Propionate, Impurities

Fluticasone EP Impurity A

$300.00 25 mg

In Stock

CAS No.

: 65429-42-7

Mol F.

: C25H31F3O5S

Mol W.

: 452.49

Cat No.

: SA47012

Fluticasone Propionate, Impurities

Fluticasone EP Impurity D; Ticabesone Propionate

$300.00 25 mg

In Stock

CAS No.

: 73205-13-7

Mol F.

: C25H32F2O5S

Mol W.

: 482.58

Cat No.

: SA47004

Fluticasone Propionate, Impurities

Fluticasone EP Impurity H; Fluticasone Propionate EP Impurity H

$300.00 25 mg

In Stock

CAS No.

: 201812-64-8

Mol F.

: C48H58F4O10S2

Mol W.

: 935.09

Cat No.

: SA47010

Fluticasone Propionate, Impurities

Fluticasone EP Impurity I; Fluticasone PropionateEP Impurity I

$300.00 25 mg

In Stock

CAS No.

: 960071-64-1

Mol F.

: C48H58F4O10S3

Mol W.

: 967.2

Cat No.

: SA47011

Fluticasone Propionate, Impurities

Fluticasone EP Impurity K

$1,000.00 25 mg

In Stock

CAS No.

Mol F.

: C25H31ClF2O5S

Mol W.

: 517

Cat No.

: SA47028

Fluticasone Furoate, Impurities

Fluticasone Furoate

Please enquire for price & pack size

In Stock

CAS No.

: 397864-44-7

Mol F.

: C27H29F3O6S

Mol W.

: 538.58

Cat No.

: SA48200

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 397864-63-0

Mol F.

: C26H28F2O7

Mol W.

: 490.49

Cat No.

: SA48201

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 80474-24-4

Mol F.

: C24H29F3O5S

Mol W.

: 486.5

Cat No.

: SA48202

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 398454-97-2

Mol F.

: C27H30F2O6S

Mol W.

: 520.6

Cat No.

: SA48203

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity F

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In Stock

CAS No.

: NA

Mol F.

: C29H34F2O7

Mol W.

: 532.6

Cat No.

: SA48204

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity G

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In Stock

CAS No.

: 785806-96-4

Mol F.

: C27H29ClF2O6S

Mol W.

: 555

Cat No.

: SA48205

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity H

$1,000.00 25 mg

In Stock

CAS No.

Mol F.

: C27H29ClF2O6S

Mol W.

: 555

Cat No.

: SA48206

Fluticasone Furoate, Impurities

Fluticasone Furoate EP Impurity J

$250.00 25 mg

In Stock

CAS No.

Mol F.

: C27H28ClF3O6S

Mol W.

: 573

Cat No.

: SA48208

Fluticasone Furoate, Impurities

Fluticasone O- Fluoro methyl ester

$250.00 25 mg

In Stock

CAS No.

: 572880-17-3

Mol F.

: C27H29F3O7

Mol W.

: 522.51

Cat No.

: SA48214

Fluticasone Propionate, Impurities

Fluticasone Propionate EP Impurity B; Fluticasone EP Impurity B

$350.00 25 mg

In Stock

CAS No.

: 948566-12-9

Mol F.

: C24H30F2O6S

Mol W.

: 484.55

Cat No.

: SA47002