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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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Impurities, Solifenacin

Solifenacin Ethyl Ester Impurity

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Out of Stock

CAS No.

: 180468-42-2

Mol F.

: C18H19NO2

Mol W.

: 281.35000000000002

Cat No.

: SA32610

Impurities, Solifenacin

Solifenacin Hydroxyquinuclidine Impurity

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Out of Stock

CAS No.

: 1619-34-7

Mol F.

: C7H13NO

Mol W.

: 127.18

Cat No.

: SA32615

Impurities, Solifenacin

Solifenacin Methyl Ester Impurity

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Out of Stock

CAS No.

: 1251905-45-9

Mol F.

: C17H17NO2

Mol W.

: 267.32

Cat No.

: SA32611

Impurities, Solifenacin

Solifenacin Nitrophenyl Ester Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1229227-22-8

Mol F.

: C22H18N2O4

Mol W.

: 374.39

Cat No.

: SA32612

Impurities, Solifenacin

Solifenacin Phenyl Tetrahydroisoquinoline Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 118864-75-8

Mol F.

: C15H15N

Mol W.

: 209.29

Cat No.

: SA32616

Impurities, Solifenacin

Solifenacin Succinate

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Out of Stock

CAS No.

: 242478-38-2

Mol F.

: C27H32N2O6

Mol W.

: 480.55

Cat No.

: SA32614

Impurities, Spironolactone

Spironolactone

Please enquire for price & pack size

Out of Stock

CAS No.

: 52-01-7

Mol F.

: C24H32O4S

Mol W.

: 416.58

Cat No.

: SA41700

Impurities, Spironolactone

Spironolactone EP Impurity A

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Out of Stock

CAS No.

: 132458-33-4

Mol F.

: C24H30O4S

Mol W.

: 414.56

Cat No.

: SA41701

Impurities, Spironolactone

Spironolactone EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H31BrO4S

Mol W.

: 495.47

Cat No.

: SA41702

Impurities, Spironolactone

Spironolactone EP Impurity C

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Out of Stock

CAS No.

: 976-70-5

Mol F.

: C22H30O3

Mol W.

: 342.47

Cat No.

: SA41703

Impurities, Spironolactone

Spironolactone EP Impurity D

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Out of Stock

CAS No.

Mol F.

: C24H32O4S2

Mol W.

: 448.64

Cat No.

: SA41704

Impurities, Spironolactone

Spironolactone EP Impurity E

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Out of Stock

CAS No.

: 33784-05-3

Mol F.

: C24H32O4S

Mol W.

: 416.57

Cat No.

: SA41705

Impurities, Spironolactone

Spironolactone EP Impurity F

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Out of Stock

CAS No.

: 976-71-6

Mol F.

: C22H28O3

Mol W.

: 340.46

Cat No.

: SA41706

Impurities, Spironolactone

Spironolactone EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 880106-10-5

Mol F.

: C24H32O5S

Mol W.

: 432.57

Cat No.

: SA41707

Impurities, Spironolactone

Spironolactone EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 53866-24-3

Mol F.

: C20H26O2

Mol W.

: 298.42

Cat No.

: SA41708

Impurities, Spironolactone

Spironolactone EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H36O4S

Mol W.

: 420.61

Cat No.

: SA41709

Impurities, SQ109

SQ109

Please enquire for price & pack size

Out of Stock

CAS No.

: 502487-67-4

Mol F.

: C22H38N2

Mol W.

: 330.55

Cat No.

: SA10701

Edoxaban, Impurities

SRR-Edoxaban

Please enquire for price & pack size

Out of Stock

CAS No.

: 1255529-26-0

Mol F.

: C24H30ClN7O4S

Mol W.

: 548.06

Cat No.

: SA33001

Edoxaban, Impurities

SRS Boc-Cyclohexyl Diastereomer of Edoxaban

Please enquire for price & pack size

Out of Stock

CAS No.

: 2081883-55-6

Mol F.

: C14H27N3O3

Mol W.

: 285.39

Cat No.

: SA33021

Ezetimibe, Impurities

SRS Ezetimibe acid impurity

$450.00 25 mg

Out of Stock

CAS No.

: 1391053-63-6

Mol F.

: C24H23F2NO4

Mol W.

: 427.44

Cat No.

: SA14839

Fingolimod, Impurities

Stearate Amide Fingolimod Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1242271-27-7

Mol F.

: C37H67NO3

Mol W.

: 573.92999999999995

Cat No.

: SA34520

Impurities, Irganox

Stearyl 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionate

Please enquire for price & pack size

Out of Stock

CAS No.

: 2082-79-3

Mol F.

: C35H62O3

Mol W.

: 530.86

Cat No.

: SA11106

Impurities, Lorcaserin

Sulfamate Lorcaserin

Please enquire for price & pack size

Out of Stock

CAS No.

: 1361572-46-4

Mol F.

: C11H14ClNO3S

Mol W.

: 275.75

Cat No.

: SA18808

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 21312-10-7

Mol F.

: C12H13N3O4S

Mol W.

: 295.31

Cat No.

: SA25500

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 135529-16-7

Mol F.

: C16H16N4O5S2

Mol W.

: 408.45

Cat No.

: SA25501

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1072-67-9

Mol F.

: C4H6N2O

Mol W.

: 98.1

Cat No.

: SA25502

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 121-57-3

Mol F.

: C6H7NO3S

Mol W.

: 173.19

Cat No.

: SA25503

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 63-74-1

Mol F.

: C6H8N2O2S

Mol W.

: 172.2

Cat No.

: SA25504

Impurities, Sulfamethoxazole

Sulfamethoxazole EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 17103-52-5

Mol F.

: C10H11N3O3S

Mol W.

: 253.28

Cat No.

: SA25505

Impurities, Sulpiride

Sulpiride

Please enquire for price & pack size

Out of Stock

CAS No.

: 15676-16-1

Mol F.

: C15H23N3O4S

Mol W.

: 341.43

Cat No.

: SA10900

Impurities, Sulpiride

Sulpiride EP impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 26116-12-1

Mol F.

: C7H17N2

Mol W.

: 129.22

Cat No.

: SA10901

Impurities, Sulpiride

Sulpiride EP impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 33045-53-3

Mol F.

: C10H13NO5S

Mol W.

: 259.28

Cat No.

: SA10903

Impurities, Sulpiride

Sulpiride EP impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 52395-25-2

Mol F.

: C8H10N2O4S

Mol W.

: 230.24

Cat No.

: SA10905

Impurities, Sulpiride

Sulpiride EP impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 2214214-03-4

Mol F.

: C15H23N3O5S

Mol W.

: 357.43

Cat No.

: SA10906

Impurities, Sulpiride

Sulpiride EP impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 67381-52-6

Mol F.

: C14H22N3O4S

Mol W.

: 327.41

Cat No.

: SA10907

Impurities, Sumatriptan

Sumatriptan

Please enquire for price & pack size

Out of Stock

CAS No.

: 103628-46-2

Mol F.

: C₁₄H₂₁N₃O₂S

Mol W.

: 295.39999999999998

Cat No.

: SA34800

Impurities, Sumatriptan

Sumatriptan 3-Hydroxy-2-Oxo Impurity

$1,155.00 25 mg

Out of Stock

CAS No.

: 2250254-19-2

Mol F.

: C14H21N3O4S

Mol W.

: 327.4

Cat No.

: SA34810

Impurities, Sumatriptan

Sumatriptan 5-Hydroxymethyl Impurity

$185.00 25 mg

Out of Stock

CAS No.

: 334981-08-7

Mol F.

: C13H18N2O

Mol W.

: 218.29

Cat No.

: SA34815

Impurities, Sumatriptan

Sumatriptan Aminophenyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 109903-35-7

Mol F.

: C8H12N2O2S

Mol W.

: 200.26

Cat No.

: SA34811

Impurities, Sumatriptan

Sumatriptan Carboxylic Acid Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 103628-44-0

Mol F.

: C12H14N2O4S

Mol W.

: 282.32

Cat No.

: SA34809

Impurities, Sumatriptan

Sumatriptan Cyanomethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 88918-76-7

Mol F.

: C12H13N3O2S

Mol W.

: 263.32

Cat No.

: SA34814

Impurities, Sumatriptan

Sumatriptan Dimethylamino Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 19718-92-4

Mol F.

: C8H19NO2

Mol W.

: 161.24

Cat No.

: SA34816

Impurities, Sumatriptan

Sumatriptan EP Impurity E

$115.00 25 mg

In Stock

CAS No.

: 88919-22-6

Mol F.

: C12H17N3O2S

Mol W.

: 267.35

Cat No.

: SA34805

Impurities, Sumatriptan

Sumatriptan EP Impurity F

$295.00 25 mg

Out of Stock

CAS No.

: 2074615-63-5

Mol F.

: C13H17N3O2S

Mol W.

: 279.36

Cat No.

: SA34806

Impurities, Sumatriptan

Sumatriptan EP Impurity G

$295.00 25 mg

Out of Stock

CAS No.

: 2074614-56-3

Mol F.

: C14H19N3O2S

Mol W.

: 293.38

Cat No.

: SA34807

Impurities, Sumatriptan

Sumatriptan EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391052-59-7

Mol F.

: C27H37N5O2S

Mol W.

: 495.68

Cat No.

: SA34808

Impurities, Sumatriptan

Sumatriptan Hydrazine Impurity

$95.00 25 mg

Out of Stock

CAS No.

: 88933-16-8(HClsalt);139272-29-0(base)

Mol F.

: C8H14ClN3O2S

Mol W.

: 251.73

Cat No.

: SA34812

Impurities, Sumatriptan

Sumatriptan Succinate

Please enquire for price & pack size

Out of Stock

CAS No.

: 103628-48-4

Mol F.

: C18H27N3O6S

Mol W.

: 413.49

Cat No.

: SA34813

Impurities, Sunitinib

Sunitinib

Please enquire for price & pack size

Out of Stock

CAS No.

: 557795-19-4

Mol F.

: C22H27FN4O2

Mol W.

: 398.47

Cat No.

: SA39600

Impurities, Sunitinib

Sunitinib Aldehyde Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 356068-86-5

Mol F.

: C14H23N3O2

Mol W.

: 265.35

Cat No.

: SA39608