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Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

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Cobicistat, Impurities

Cobicistat Morpholine acid Impurity

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CAS No.

: 1004316-92-0

Mol F.

: C17H28N4O4S

Mol W.

: 384.49

Cat No.

: SA48612

Cobicistat, Impurities

Cobicistat MTV-Imidazole Impurity

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CAS No.

: 1247119-46-5

Mol F.

: C12H16N4OS

Mol W.

: 264.35000000000002

Cat No.

: SA48611

Cobicistat, Impurities

Cobicistat RRR Isomer

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CAS No.

: 1051463-82-1

Mol F.

: C40H53N7O5S2

Mol W.

: 776

Cat No.

: SA48607

Cobicistat, Impurities

Cobicistat SSR Isomer

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CAS No.

Mol F.

: C40H53N7O5S2

Mol W.

: 776

Cat No.

: SA48605

Cobicistat, Impurities

Cobicistat SSS Isomer

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CAS No.

: 2230789-82-7

Mol F.

: C40H53N7O5S2

Mol W.

: 776

Cat No.

: SA48606

Cobicistat, Impurities

Cobicistat Urea Impurity

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CAS No.

: 1004316-93-1

Mol F.

: C13H19N3O3S

Mol W.

: 297.39999999999998

Cat No.

: SA48604

Colesevelam, Impurities

Colesevelam Trimethylamine Hydrochloride Impurity

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CAS No.

: 593-81-7

Mol F.

: C3H9N·HCl

Mol W.

: 95.57

Cat No.

: SA10218

Hydrocortisone Valerate, Impurities

Cortisone

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CAS No.

: 53-06-5

Mol F.

: C21H28O5

Mol W.

: 360.44

Cat No.

: SA27300

Cyanocobalamin, Impurities

Cyanocobalamin

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CAS No.

: 68-19-9

Mol F.

: C63H88CoN14O14P

Mol W.

: 1355.4

Cat No.

: SA55300

Cyclobenzaprine, Impurities

Cyclobenzaprine 3-Hydroxy Impurity

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CAS No.

: 30235-48-4

Mol F.

: C20H21NO

Mol W.

: 291.39

Cat No.

: SA23107

Cyclobenzaprine, Impurities

Cyclobenzaprine 5-Hydroxy Impurity

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CAS No.

: 18029-54-4

Mol F.

: C20H23NO

Mol W.

: 293.4

Cat No.

: SA23101

Cyclobenzaprine, Impurities

Cyclobenzaprine Desmethyl Hydrochloride

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CAS No.

: 438-59-5

Mol F.

: C19H20ClN

Mol W.

: 297.82

Cat No.

: SA23103

Cyclobenzaprine, Impurities

Cyclobenzaprine Dibenzosuberenone Impurity

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CAS No.

: 2222-33-5

Mol F.

: C15H10O

Mol W.

: 206.24

Cat No.

: SA23106

Cyclobenzaprine, Impurities

Cyclobenzaprine Didesmethyl

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CAS No.

: 1614-47-7

Mol F.

: C18H18ClN

Mol W.

: 283.8

Cat No.

: SA23104

Cyclobenzaprine, Impurities

Cyclobenzaprine HCl

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CAS No.

: 303-53-7 (Base); 6202-23-9 (HCl)

Mol F.

: C20H22ClN

Mol W.

: 311.85

Cat No.

: SA23102

Cyclobenzaprine, Impurities

Cyclobenzaprine-10,11-epoxide

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CAS No.

: 58256-08-9

Mol F.

: C20H21NO

Mol W.

: 291.4

Cat No.

: SA23109

Carbamazepine, Impurities

Cyheptamide

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CAS No.

: 7199-29-3

Mol F.

: C16H15NO

Mol W.

: 237.3

Cat No.

: SA20336

Impurities, Permethrin

Cypermethrin

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CAS No.

: 52315-07-8

Mol F.

: C22H19Cl2NO3

Mol W.

: 416.3

Cat No.

: SA51911

Cyproheptadine, Impurities

Cyproheptadine 10,11-Dihydro Impurity

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CAS No.

: 21081-07-2

Mol F.

: C21H23N

Mol W.

: 289.4

Cat No.

: SA53806

Cyproheptadine, Impurities

Cyproheptadine Despiperidine Methyl Impurity

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CAS No.

: 24167-43-9

Mol F.

: C16H16

Mol W.

: 208.3

Cat No.

: SA53808

Cyproheptadine, Impurities

Cyproheptadine Despiperidine Propylidene Impurity

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CAS No.

: NA

Mol F.

: C18H16

Mol W.

: 232.3

Cat No.

: SA53807

Cyproheptadine, Impurities

Cyproheptadine Diol Impurity

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CAS No.

: NA

Mol F.

: C21H23NO2

Mol W.

: 321.42

Cat No.

: SA53810

Cyproheptadine, Impurities

Cyproheptadine EP Impurity A

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CAS No.

: 256-81-5

Mol F.

: C15H12

Mol W.

: 192.3

Cat No.

: SA53801

Cyproheptadine, Impurities

Cyproheptadine EP impurity B

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CAS No.

: 2222-33-5

Mol F.

: C15H10O

Mol W.

: 206.2

Cat No.

: SA53802

Cyproheptadine, Impurities

Cyproheptadine EP impurity C

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CAS No.

: 3967-32-6

Mol F.

: C21H23NO

Mol W.

: 305.4

Cat No.

: SA53803

Cyproheptadine, Impurities

Cyproheptadine Epoxide Impurity

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CAS No.

: 54191-04-7

Mol F.

: C21H21NO

Mol W.

: 303.41

Cat No.

: SA53809

Cyproheptadine, Impurities

Cyproheptadine N-Oxide Mixture

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CAS No.

: 100295-63-4

Mol F.

: C21H21NO

Mol W.

: 303.4

Cat No.

: SA53804

Impurities, Molnupiravir

Cytidine-4-amino analogue impurity

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CAS No.

: NA

Mol F.

: C9H13N3O5

Mol W.

: 243.22

Cat No.

: SA46209

Impurities, Molnupiravir

Cytidine-N3-analogue impurity

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CAS No.

: 1195711-14-8

Mol F.

: C9H13N3O5

Mol W.

: 243.22

Cat No.

: SA46210

Impurities, Topiramate

D-Fructopiranose Hydrochloride

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CAS No.

: 32785-90-3

Mol F.

: C12H19ClO5

Mol W.

: 278.73

Cat No.

: SA45510

Emtricitabine, Impurities

D-Isomenthol Emtricitanibe Impurity

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CAS No.

: 23283-97-8

Mol F.

: C10H20O

Mol W.

: 156.3

Cat No.

: SA22931

Ganciclovir, Impurities

D-Valganciclovir Hydrochloride

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CAS No.

: 1393911-57-3

Mol F.

: C₁₄H₂₃ClN₆O₅

Mol W.

: 390.82

Cat No.

: SA13715

Dacarbazine, Impurities

Dacarbazine

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CAS No.

: 4342-03-4

Mol F.

: C6H10N6O

Mol W.

: 182.18

Cat No.

: SA38800

Dacarbazine, Impurities

Dacarbazine EP Impurity B

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CAS No.

: 360-97-4

Mol F.

: C4H6N4O

Mol W.

: 126.12

Cat No.

: SA38802

Dacarbazine, Impurities

Dacarbazine EP Impurity C

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CAS No.

: 1314929-56-0

Mol F.

: C4H5N5O

Mol W.

: 139.12

Cat No.

: SA38803

Dacarbazine, Impurities

Dacarbazine EP Impurity D

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CAS No.

: 124-40-3 (Free base); 506-59-2 (HCl Salt)

Mol F.

: C2H7N

Mol W.

: 45.08

Cat No.

: SA38804

Ethisterone, Impurities

Danazol

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CAS No.

: 17230-88-5

Mol F.

: C₂₂H₂₇NO₂

Mol W.

: 337.46

Cat No.

: SA12907

Dapagliflozin, Impurities

Dapagliflozin

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CAS No.

: 461432-26-8

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15002

Dapagliflozin

Dapagliflozin 1,4-Butanediol Dimer

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CAS No.

: NA

Mol F.

: C42H48Cl2O12

Mol W.

: 815.7

Cat No.

: SA15086

Dapagliflozin

Dapagliflozin 1,4-Dichlorobenzene Impurity | CAS : 2069934-29-6

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CAS No.

: 2069934-29-6

Mol F.

: C15H14Cl2O

Mol W.

: 281.18

Cat No.

: SA15073

Dapagliflozin

Dapagliflozin 1,6 Disaccharide Hepta-acetate Derivative

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CAS No.

: NA

Mol F.

: C56H62Cl2O19

Mol W.

: 1110.0

Cat No.

: SA15081

Dapagliflozin

Dapagliflozin 1,6-Anhydro Impurity

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CAS No.

: NA

Mol F.

: C21H23ClO6

Mol W.

: 406.9

Cat No.

: SA15099

Dapagliflozin

Dapagliflozin 1,6-Disaccharide 4-Methoxybenzyl Analog

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CAS No.

: NA

Mol F.

: C41H46Cl2O12

Mol W.

: 801.7

Cat No.

: SA15089

Dapagliflozin

Dapagliflozin 1,6-Gluconolatone Derivative

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CAS No.

: 2452300-92-2

Mol F.

: C27H33ClO12

Mol W.

: 585.0

Cat No.

: SA150106

Dapagliflozin

Dapagliflozin 2-ethoxybenzyl Tetraacetate Analog

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CAS No.

: 2040305-09-5

Mol F.

: C29H33ClO10

Mol W.

: 577.0

Cat No.

: SA150102

Dapagliflozin

Dapagliflozin 2-ethoxyphenyl Aglycone Impurity

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CAS No.

: 1713991-97-9

Mol F.

: C15H14BrClO2

Mol W.

: 341.6

Cat No.

: SA150101

Dapagliflozin

Dapagliflozin 2-Hydroxy Triacetate

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CAS No.

: NA

Mol F.

Mol W.

Cat No.

: SA15078

Dapagliflozin

Dapagliflozin 2-Hydroxy Triacetate Impurity

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CAS No.

: NA

Mol F.

: C27H31ClO9

Mol W.

: 535.0

Cat No.

: SA15094

Dapagliflozin, Impurities

Dapagliflozin 3-Acetate Impurity

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CAS No.

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15049

Dapagliflozin

Dapagliflozin 3-Acetoxy Benzyl Tetraacetate Impurity

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CAS No.

: NA

Mol F.

: C31H35ClO12

Mol W.

: 635.1

Cat No.

: SA150113