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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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Darifenacin, Impurities

Darifenacin

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CAS No.

: 133099-04-4; 133099-07-7 (HBr)

Mol F.

: C28H31BrN2O2

Mol W.

: 507.46

Cat No.

: SA43500

Darifenacin, Impurities

Darifenacin 2,3-Dehydro Bromo Impurity

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CAS No.

: NA

Mol F.

: C10H9BrO

Mol W.

: 225.08

Cat No.

: SA43518

Darifenacin, Impurities

Darifenacin 3-Hydroxy Impurity

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CAS No.

: 206048-82-0

Mol F.

: C28H30N2O3

Mol W.

: 442.55

Cat No.

: SA43502

Darifenacin, Impurities

Darifenacin 5-Bromoethyl Impurity

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CAS No.

: 127264-14-6

Mol F.

: C10H11BrO

Mol W.

: 227.1

Cat No.

: SA43511

Darifenacin, Impurities

Darifenacin 5-Carboxymethyl Impurity

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CAS No.

: 69999-16-2

Mol F.

: C10H10O3

Mol W.

: 178.18

Cat No.

: SA43512

Darifenacin, Impurities

Darifenacin 7-Bromo Analog

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CAS No.

: 1391080-43-5

Mol F.

: C28H30Br2N2O2

Mol W.

: 586.36

Cat No.

: SA43507

Darifenacin, Impurities

Darifenacin Amide Dimer Impurity

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CAS No.

: NA

Mol F.

: C38H40N2O3

Mol W.

: 572.74

Cat No.

: SA43515

Darifenacin, Impurities

Darifenacin Amide ethyl Benzofuran Isomer

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CAS No.

: NA

Mol F.

: C28H30N2O2

Mol W.

: 426.55

Cat No.

: SA43519

Darifenacin, Impurities

Darifenacin Bis Dimer Impurity

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CAS No.

: NA

Mol F.

: C38H40N2O3

Mol W.

: 572.74

Cat No.

: SA43516

Darifenacin, Impurities

Darifenacin Carboxylic Acid

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CAS No.

: NA

Mol F.

: C28H30BrNO3

Mol W.

: 508.45

Cat No.

: SA43508

Darifenacin, Impurities

Darifenacin Cyano Pyrrolidine Impurity

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CAS No.

: 133099-11-3; 194602-27-2 (HBr)

Mol F.

: C18H19BrN2

Mol W.

: 343.26

Cat No.

: SA43520

Darifenacin, Impurities

Darifenacin Cyano t-BOC Impurity

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CAS No.

: 1159977-31-7

Mol F.

: C23H26NO2

Mol W.

: 362.46

Cat No.

: SA43513

Darifenacin, Impurities

Darifenacin Dehydro Impurity

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CAS No.

: 943034-52-4

Mol F.

: C28H29BrN2O2

Mol W.

: 505.45

Cat No.

: SA43514

Darifenacin, Impurities

Darifenacin HBr. Impurity G

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CAS No.

: 2468796-89-4

Mol F.

: C28H31BrN2O2

Mol W.

: 507.47

Cat No.

: SA43501

Darifenacin, Impurities

Darifenacin Methanesulfonate Impurity

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CAS No.

: NA

Mol F.

: C11H14O4S

Mol W.

: 242.29

Cat No.

: SA43506

Darifenacin, Impurities

Darifenacin N oxide

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CAS No.

: 1391080-40-2

Mol F.

: C28H30N2O3

Mol W.

: 442.55

Cat No.

: SA43509

Darifenacin, Impurities

Darifenacin Nitrile Impurity

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CAS No.

: 252317-48-9 (base)

Mol F.

: C28H28N2O

Mol W.

: 408.53

Cat No.

: SA43505

Darifenacin, Impurities

Darifenacin Pyrrolidine Carboxylic Acid

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CAS No.

: NA

Mol F.

: C18H19NO2

Mol W.

: 281.35

Cat No.

: SA43510

Darifenacin, Impurities

Darifenacin Pyrrolidinium Dimer

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CAS No.

: 1397321-17-3; 1396968-57-2 (HBr)

Mol F.

: C38H41BrN2O3

Mol W.

: 653.65

Cat No.

: SA43503

Darifenacin, Impurities

Darifenacin R-Isomer

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CAS No.

: NA

Mol F.

: C28H31BrN2O2

Mol W.

: 507.46

Cat No.

: SA43517

Darifenacin, Impurities

Darifenacin Vinyl Impurity

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CAS No.

: 1048979-09-4

Mol F.

: C28H30N2O2

Mol W.

: 426.55

Cat No.

: SA43504

Darunavir, Impurities

Darunavir

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CAS No.

: 206361-99-1

Mol F.

: C27H37N3O7S

Mol W.

: 547.66

Cat No.

: SA39400

Darunavir, Impurities

Darunavir (1R,2R)-Isomer

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CAS No.

: 1546918-95-9

Mol F.

: C27H37N3O7S

Mol W.

: 547.66

Cat No.

: SA39405

Darunavir, Impurities

Darunavir (1R,2S)-Isomer

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CAS No.

: 1402142-63-5

Mol F.

: C27H37N3O7S

Mol W.

: 547.66

Cat No.

: SA39404

Darunavir, Impurities

Darunavir (1S,2S)-Isomer

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CAS No.

: 850141-19-4

Mol F.

: C27H37N3O7S

Mol W.

: 547.66

Cat No.

: SA39406

Darunavir, Impurities

Darunavir Carbamic Acid Impurity

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CAS No.

: 1526916-56-2

Mol F.

: C21H29N3O5S

Mol W.

: 435.54

Cat No.

: SA39402

Darunavir, Impurities

Darunavir Carbamic Acid Methyl Ester

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CAS No.

: 1526916-57-3

Mol F.

: C22H31N3O5S

Mol W.

: 449.56

Cat No.

: SA39403

Darunavir, Impurities

Darunavir Diamino (2R,3S) Isomer

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CAS No.

: 169280-56-2

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39401

Darunavir, Impurities

Darunavir Imp. 19 (DN-Sulphonamide SR isomer)

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CAS No.

: 1402142-62-4

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39410

Dasatinib, Impurities

Dasatinib

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CAS No.

: 302962-49-8

Mol F.

: C‚‚H‚†ClN‡O‚S

Mol W.

: 488.01

Cat No.

: SA40500

Dasatinib, Impurities

Dasatinib Carboxylic Acid

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CAS No.

: 910297-53-9

Mol F.

: C22H24ClN7O3S

Mol W.

: 501.99

Cat No.

: SA40501

Dasatinib, Impurities

Dasatinib Carboxylic Acid Ethyl Ester

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CAS No.

: 910297-62-0

Mol F.

: C‚„H‚ˆClN‡OƒS

Mol W.

: 530.04

Cat No.

: SA40508

Dasatinib, Impurities

Dasatinib Deschloro Impurity

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CAS No.

: 1184919-23-0

Mol F.

: C‚‚H‚‡N‡O‚S

Mol W.

: 453.56

Cat No.

: SA40502

Dasatinib, Impurities

Dasatinib Dichloro Impurity

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CAS No.

: 302964-08-5

Mol F.

: C16H13ClN5OS

Mol W.

: 394.28

Cat No.

: SA40506

Dasatinib, Impurities

Dasatinib Dimer Impurity

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CAS No.

: 910297-61-9

Mol F.

: C36H34Cl2N12O2S2

Mol W.

: 801.77

Cat No.

: SA40507

Dasatinib, Impurities

Dasatinib N1-Oxide

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CAS No.

: NA

Mol F.

: C22H26ClN7O3S

Mol W.

: 504

Cat No.

: SA40504

Dasatinib, Impurities

Dasatinib N4-Oxide

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CAS No.

: 910297-52-8

Mol F.

: C‚‚H‚†ClN‡OƒS

Mol W.

: 504.00

Cat No.

: SA40503

Impurities, Rosuvastatin

De((3,5-dihydroxyhept-6-enoic Acid)N-methyl) Diphenylphosphinyl Rosuvastatin

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CAS No.

: 371775-72-3

Mol F.

: C27H27FN3O3PS

Mol W.

: 523.56

Cat No.

: SA12134

Impurities, Linezolid

Deacetyl (R)-Linezolid

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CAS No.

: 912359-80-9

Mol F.

: C₁₄H₁₈FN₃O₃

Mol W.

: 295.31

Cat No.

: SA17512

Impurities, Linezolid

Deacetyl Linezolid Thioacetamide

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CAS No.

: 216868-57-4

Mol F.

: C₁₆H₂₀FN₃O₃S

Mol W.

: 353.41

Cat No.

: SA17510

Impurities, Lorcaserin

Dechloro 2-Methyl analog

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CAS No.

: 743374-52-9

Mol F.

: C11H15N

Mol W.

: 161.24

Cat No.

: SA18812

Clonixin, Impurities

Dechloro Chlonixin

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CAS No.

: 17782-05-7

Mol F.

: C13H12N2O2

Mol W.

: 228.25

Cat No.

: SA38001

Decitabine, Impurities

Decitabine

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CAS No.

: 2353-33-5

Mol F.

: C8H12N4O4

Mol W.

: 228.21

Cat No.

: SA42200

Decitabine, Impurities

Decitabine 3-Toluoyl Impurity

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CAS No.

: 183016-21-9

Mol F.

: C16H18N4O5

Mol W.

: 346.34

Cat No.

: SA42208

Decitabine, Impurities

Decitabine 3-Toluoyl Impurity

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CAS No.

: 183016-21-9

Mol F.

: C16H18N4O5

Mol W.

: 346.34

Cat No.

: SA42202

Decitabine, Impurities

Decitabine 6-Methyl Impurity

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CAS No.

: 16352-06-0

Mol F.

: C4H6N4O

Mol W.

: 126.12

Cat No.

: SA42207

Decitabine, Impurities

Decitabine alpha-Isomer

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CAS No.

: 22432-95-7

Mol F.

: C8H12N4O4

Mol W.

: 228.21

Cat No.

: SA42210

Decitabine, Impurities

Decitabine Amide Impurity

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CAS No.

: 2514661-75-5

Mol F.

: C4H6N6O2

Mol W.

: 170.13

Cat No.

: SA42209

Decitabine, Impurities

Decitabine Imine Impurity

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CAS No.

: 2512207-76-8

Mol F.

: C4H6N6O2

Mol W.

: 170.13

Cat No.

: SA42201

Decitabine, Impurities

Decitabine Impurity D

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CAS No.

: 1126-46-1

Mol F.

: C8H7ClO2

Mol W.

: 170.59

Cat No.

: SA42205