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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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Exemestane, Impurities

Exemestane Related Compound 2

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Out of Stock

CAS No.

: NA

Mol F.

: C20H24O3

Mol W.

: 312.39999999999998

Cat No.

: SA19107

Exemestane, Impurities

Exemestane Related Compound D

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Out of Stock

CAS No.

: 2467590-81-2

Mol F.

: C20H24O2

Mol W.

: 296.41

Cat No.

: SA19104

Ezetimibe, Impurities

Ezetimibe 2-Fluoro Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2191318-99-5

Mol F.

: C24H21F2NO3

Mol W.

: 409.44

Cat No.

: SA14829

Ezetimibe, Impurities

Ezetimibe 2-hydroxyphenyl Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H21F2NO3

Mol W.

: 409.15

Cat No.

: SA14859

Ezetimibe, Impurities

Ezetimibe 3-hydroxyphenyl Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H21F2NO3

Mol W.

: 409.43

Cat No.

: SA14860

Ezetimibe, Impurities

Ezetimibe Diacid Impurity

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Out of Stock

CAS No.

: 1013025-04-1

Mol F.

: C25H24FNO5

Mol W.

: 437.46

Cat No.

: SA14804

Ezetimibe, Impurities

Ezetimibe Diastereomers (R,R,R and S,S,S)

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Out of Stock

CAS No.

Mol F.

: C24H21F2NO3

Mol W.

: 409.43

Cat No.

: SA14852

Ezetimibe, Impurities

Ezetimibe Hydroxy Glucuronide

$995.00 25 mg

Out of Stock

CAS No.

: 536709-33-8

Mol F.

: C30H29F2NO9

Mol W.

: 585.56

Cat No.

: SA14824

Ezetimibe, Impurities

Ezetimibe Lactam Cleaved Alcohol; 3’-Anhydro Ezetimibe Alcohol Impurity

$995.00 25 mg

Out of Stock

CAS No.

: 1374250-07-3

Mol F.

: C24H23F2NO2

Mol W.

: 395.45

Cat No.

: SA14817

Ezetimibe, Impurities

Ezetimibe meta-Fluorobenzene Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H21F2NO3

Mol W.

: 409.43

Cat No.

: SA14858

Ezetimibe, Impurities

Ezetimibe Phenexy Glucuronide

$950.00 25 mg

Out of Stock

CAS No.

: 190448-57-8

Mol F.

: C30H29F2NO9

Mol W.

: 585.56

Cat No.

: SA14823

Ezetimibe, Impurities

Ezetimibe Triol Impurity

$1,550.00 25 mg

Out of Stock

CAS No.

: 2363086-22-8

Mol F.

: C33H30F2N2OS

Mol W.

: 572.61

Cat No.

: SA14830

Famotidine, Impurities

Famotidine

Please enquire for price & pack size

Out of Stock

CAS No.

: 76824-35-6

Mol F.

: C8H15N7O2S3

Mol W.

: 337.45

Cat No.

: SA40800

Famotidine, Impurities

Famotidine

Please enquire for price & pack size

Out of Stock

CAS No.

: 76824-35-6

Mol F.

: C8H15N7O2S3

Mol W.

: 337.45

Cat No.

: SA43600

Famotidine, Impurities

Famotidine Chloromethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 81152-53-6

Mol F.

: C5H7ClN4S

Mol W.

: 190.65

Cat No.

: SA43610

Famotidine, Impurities

Famotidine Cyanoethyl Impurity

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Out of Stock

CAS No.

: 76823-93-3

Mol F.

: C8H11N5S2

Mol W.

: 241.34

Cat No.

: SA43601

Famotidine, Impurities

Famotidine Cyanoethyl Impurity

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Out of Stock

CAS No.

: 76823-93-3

Mol F.

: C8H11N5S2

Mol W.

: 241.34

Cat No.

: SA40812

Famotidine, Impurities

Famotidine EP Impurity A

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Out of Stock

CAS No.

: 124646-10-2

Mol F.

: C8H14N6S2

Mol W.

: 258.37

Cat No.

: SA40801

Famotidine, Impurities

Famotidine EP Impurity A

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Out of Stock

CAS No.

: 88061-72-7 (2HCl); 76833-47-1 (HCl); 124646-10-2 (base)

Mol F.

: C8H16Cl2N6S2

Mol W.

: 331.29

Cat No.

: SA43602

Famotidine, Impurities

Famotidine EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 89268-62-2

Mol F.

: C16H23N11O2S5

Mol W.

: 561.77

Cat No.

: SA40802

Famotidine, Impurities

Famotidine EP Impurity C

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Out of Stock

CAS No.

: 76824-17-4 (HCl); 106433-44-7 (Base)

Mol F.

: C8H15ClN6O3S3 (HCl salt)

Mol W.

: 374.89

Cat No.

: SA43603

Famotidine, Impurities

Famotidine EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 76824-16-3

Mol F.

: C8H13N5OS2

Mol W.

: 259.35000000000002

Cat No.

: SA43604

Famotidine, Impurities

Famotidine EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 129083-44-9

Mol F.

: C10H14N8S4

Mol W.

: 374.53

Cat No.

: SA43609

Famotidine, Impurities

Famotidine EP Impurity F

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Out of Stock

CAS No.

: 107880-74-0

Mol F.

: C8H12N4O2S2

Mol W.

: 260.33999999999997

Cat No.

: SA43605

Famotidine, Impurities

Famotidine EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 76823-97-7

Mol F.

: C9H13N7S2

Mol W.

: 283.38

Cat No.

: SA40807

Famotidine, Impurities

Famotidine EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 88046-01-9 (2HCl); 106649-96-1 (base)

Mol F.

: C6H12Cl2N6S2

Mol W.

: 303.24

Cat No.

: SA43611

Famotidine, Impurities

Famotidine EP Impurity I (HCl)

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C8H15ClN6O4S3

Mol W.

: 390.89

Cat No.

: SA43606

Famotidine, Impurities

Famotidine EP Impurity J

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Out of Stock

CAS No.

: 1798006-30-0 (HCl); 76824-14-1 (base)

Mol F.

: C9H15ClN4O2S2 (HCl)

Mol W.

: 310.82

Cat No.

: SA43607

Famotidine, Impurities

Famotidine Methoxy Impurity

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Out of Stock

CAS No.

: 76823-94-4

Mol F.

: C‰H…N…OS‚

Mol W.

: 273.38

Cat No.

: SA40811

Famotidine, Impurities

Famotidine Sulfoxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 90237-03-9

Mol F.

: C8H15N7O3S3

Mol W.

: 353.44

Cat No.

: SA43608

Febuxostat, Impurities

Febuxostat Amide Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 1643131-89-8

Mol F.

: C17H20N2O4S

Mol W.

: 348.42

Cat No.

: SA32007

Febuxostat, Impurities

Febuxostat Descyano Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 144060-97-9

Mol F.

: C17H21NO3S

Mol W.

: 319.42

Cat No.

: SA32020

Febuxostat, Impurities

Febuxostat Descyano Impurity

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Out of Stock

CAS No.

: 1206550-99-3

Mol F.

: C15H17NO3S

Mol W.

: 291.37

Cat No.

: SA32016

Febuxostat, Impurities

Febuxostat Dicarboxylic Acid Impurity

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Out of Stock

CAS No.

: 1239233-87-4

Mol F.

: C16H17NO5S

Mol W.

: 335.37

Cat No.

: SA32011

Febuxostat, Impurities

Febuxostat Dithiazole Acid Impurity

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Out of Stock

CAS No.

: 1330632-48-8

Mol F.

: C20H20N2O5S2

Mol W.

: 432.51

Cat No.

: SA32015

Fenofibrate, Impurities

Fenirofibrate

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Out of Stock

CAS No.

: 54419-31-7

Mol F.

: C17H17ClO4

Mol W.

: 320.77

Cat No.

: SA27212

Fenofibrate, Impurities

Fenofibrate EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 217636-47-0

Mol F.

: C17H15ClO3

Mol W.

: 302.75

Cat No.

: SA27203

Fenofibrate, Impurities

Fenofibrate EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 154356-96-4

Mol F.

: C16H15ClO2

Mol W.

: 274.74

Cat No.

: SA27206

Fenofibrate, Impurities

Fenofibric Acid 1-Carboxyl-1-methylethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 1797121-54-0

Mol F.

: C21H21ClO6

Mol W.

: 404.84

Cat No.

: SA27209

Finasteride, Impurities

Finasteride

Please enquire for price & pack size

Out of Stock

CAS No.

: 98319-26-7

Mol F.

: C23H36N2O2

Mol W.

: 372.54

Cat No.

: SA36700

Finasteride, Impurities

Finasteride Carboxylic Acid

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Out of Stock

CAS No.

: 104239-97-6

Mol F.

: C19H27NO3

Mol W.

: 317.42

Cat No.

: SA36705

Finasteride, Impurities

Finasteride Dehydro Carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 1180488-92-9

Mol F.

: C19H25NO3

Mol W.

: 315.41000000000003

Cat No.

: SA36704

Finasteride, Impurities

Finasteride Dehydro Carboxylic Acid Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 166896-62-4

Mol F.

: C20H27NO3

Mol W.

: 329.43

Cat No.

: SA36706

Finasteride, Impurities

Finasteride Dihydro Carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 103335-55-3

Mol F.

: C19H29NO3

Mol W.

: 319.44

Cat No.

: SA36707

Finasteride, Impurities

Finasteride Dihydro Carboxylic Acid Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 73671-92-8

Mol F.

: C20H31NO3

Mol W.

: 333.46

Cat No.

: SA36708

Finasteride, Impurities

Finasteride EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 98319-24-5

Mol F.

: C23H38N2O2

Mol W.

: 374.56

Cat No.

: SA36701

Finasteride, Impurities

Finasteride EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 103335-41-7

Mol F.

: C20H29NO3

Mol W.

: 331.45

Cat No.

: SA36702

Finasteride, Impurities

Finasteride EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1329611-51-9

Mol F.

: C23H34N2O2

Mol W.

: 370.53

Cat No.

: SA36703

Fingolimod, Impurities

Fingolimod

Please enquire for price & pack size

Out of Stock

CAS No.

: 162359-55-9;162359-56-0(HCl)

Mol F.

: C19H34ClNO2

Mol W.

: 343.93

Cat No.

: SA34500

Fingolimod, Impurities

Fingolimod Decyl Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: 780729-32-0

Mol F.

: C21H37NO2

Mol W.

: 335.52

Cat No.

: SA34506