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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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Carbamazepine, Impurities, Nitrosamine

N-Nitroso Carbamazepine EP Impurity E

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CAS No.

: 7458-08-4

Mol F.

: C14H12N2O

Mol W.

: 224.3

Cat No.

: SA20345

Impurities, Nitrosamine

N-Nitroso Carteolol

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CAS No.

Mol F.

: C16H23N3O4

Mol W.

: 321.38

Cat No.

: SA44685

Impurities, Nitrosamine

N-Nitroso Cinacalcet

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CAS No.

: 3036581-83-3

Mol F.

: C22H21F3N2O

Mol W.

: 386.41

Cat No.

: SA446118

Citalopram, Impurities, Nitrosamine

N-Nitroso Citalopram

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CAS No.

Mol F.

: C19H18FN2O2

Mol W.

: 339.37

Cat No.

: SA17024

Impurities, Nitrosamine

N-Nitroso Clopidogrel EP Impurity F

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CAS No.

: NA

Mol F.

: C15H15ClN2O3S

Mol W.

: 338.8

Cat No.

: SA44619

Impurities, Nitrosamine

N-Nitroso Cyclophosphamide

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CAS No.

Mol F.

: C7H14Cl2N3O3P

Mol W.

: 290.08

Cat No.

: SA446102

Impurities, Nitrosamine

N-Nitroso dabigatran Impurity

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CAS No.

Mol F.

: C34H40N8O6

Mol W.

: 656.73

Cat No.

: SA44655

Colesevelam, Impurities, Nitrosamine

N-Nitroso Decyl Aminoquat

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CAS No.

: NA

Mol F.

: C19H42BrN3O

Mol W.

: 408.46

Cat No.

: SA10219

Impurities, Nitrosamine

N-Nitroso Desipramine

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CAS No.

: 57164-17-7

Mol F.

: C18H21N3O

Mol W.

: 295.4

Cat No.

: SA446133

Desloratadine, Impurities, Nitrosamine

N-Nitroso Desloratadine

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CAS No.

: 1246819-22-6

Mol F.

: C19H18ClN3O

Mol W.

: 339.82

Cat No.

: SA44635

Alcaftadine, Impurities, Nitrosamine

N-Nitroso Desmethyl Alcaftadine

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CAS No.

: NA

Mol F.

: C18H18N4O2

Mol W.

: 322.37

Cat No.

: SA31008

Azelastine, Impurities, Nitrosamine

N-Nitroso Desmethyl Azelastine

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CAS No.

: NA

Mol F.

: C21H21ClN4O2

Mol W.

: 396.9

Cat No.

: SA54712

Chlorpheniramine, Impurities, Nitrosamine

N-Nitroso Desmethyl Chlorpheniramine Impurity

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CAS No.

: 3036581-84-4

Mol F.

: C15H16ClN3O

Mol W.

: 289.8

Cat No.

: SA446113

Chlorpromazine, Nitrosamine

N-Nitroso Desmethyl Chlorpromazine

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CAS No.

: 55855-44-2

Mol F.

: C16H16ClN3OS

Mol W.

: 333.83

Cat No.

: SA21620

Impurities, Nitrosamine

N-Nitroso Desmethyl Diphenhydramine

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CAS No.

: 55855-43-1

Mol F.

: C16H18N2O2

Mol W.

: 270.3

Cat No.

: SA446134

Imatinib, Impurities, Nitrosamine

N-Nitroso Desmethyl Imatinib

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CAS No.

: 2816369-80-7

Mol F.

: C28H28N8O2

Mol W.

: 508.6

Cat No.

: SA22217

Impurities, Nitrosamine, Ranitidine

N-Nitroso Desmethyl Ranitidine

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CAS No.

Mol F.

: C12H19N5O4S

Mol W.

: 329.38

Cat No.

: SA26519

Impurities, Nitrosamine, Tetracaine

N-Nitroso Desmethyl Tetracaine | CAS : 3050754-69-0

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CAS No.

: 3050754-69-0

Mol F.

: C14H21N3O3

Mol W.

: 279.3

Cat No.

: SA446110

Impurities, Nitrosamine, Ropinirole

N-Nitroso Despropyl Ropinirole

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CAS No.

Mol F.

: C13H17N3O2

Mol W.

: 247.29

Cat No.

: SA41217

Diazepam, Impurities, Nitrosamine

N-Nitroso Diazepam EP Impurity D

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CAS No.

: 51145-18-7

Mol F.

: C14H11ClN2O2

Mol W.

: 274.7

Cat No.

: SA20509

Diclofenac, Impurities, Nitrosamine

N-Nitroso Diclofenac

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CAS No.

: 66505-80-4

Mol F.

: C14H10Cl2N2O3

Mol W.

: 325.1

Cat No.

: SA12716

Diltiazem, Impurities, Nitrosamine

N-NITROSO DILTIAZEM EP IMPURITY G

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CAS No.

: NA

Mol F.

: C19H21N3O4S

Mol W.

: 387.45

Cat No.

: SA19533

Duloxetine, Impurities, Nitrosamine

N-Nitroso Duloxetin EP Impurity C

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CAS No.

Mol F.

: C18H18N2O2S

Mol W.

: 326.41

Cat No.

: SA36318

Duloxetine, Impurities, Nitrosamine

N-Nitroso Duloxetin EP Impurity E

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CAS No.

Mol F.

: C18H18N2O2S

Mol W.

: 326.41

Cat No.

: SA36319

Duloxetine, Impurities, Nitrosamine

N-Nitroso Duloxetin EP Impurity F

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CAS No.

Mol F.

: C18H18N2O2S

Mol W.

: 326.41

Cat No.

: SA36320

Impurities, Nitrosamine

N-Nitroso Ebastine

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CAS No.

: NA

Mol F.

: C18H20N2O2

Mol W.

: 296.36

Cat No.

: SA44631

Eltrombopag, Impurities, Nitrosamine

N-Nitroso Eltrombopag

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CAS No.

Mol F.

: C25H21N5O5

Mol W.

: 471.46

Cat No.

: SA51104

Ensartinib, Impurities, Nitrosamine

N-Nitroso Ensartinib Impurity

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CAS No.

: NA

Mol F.

: C26H26Cl2FN7O4

Mol W.

: 590.4

Cat No.

: SA53603

Eslicarbazepine, Impurities, Nitrosamine

N-Nitroso Eslicarbazepine

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CAS No.

Mol F.

: C14H12N2O2

Mol W.

: 240.26

Cat No.

: SA28810

Ezetimibe, Impurities, Nitrosamine

N-Nitroso Ezetimibe

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CAS No.

Mol F.

: C33H29F2N3O6

Mol W.

: 601.6

Cat No.

: SA14855

Impurities, Nitrosamine

N-Nitroso Frovatriptan 1

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CAS No.

Mol F.

: C14H16N4O2

Mol W.

: 272.3

Cat No.

: SA44662

Impurities, Nitrosamine

N-Nitroso Furosemide Impurity

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CAS No.

: 2708280-93-5

Mol F.

: C12H10ClN3O6S

Mol W.

: 359.74

Cat No.

: SA44681

Impurities, Nitrosamine

N-Nitroso Hydrochlorothiazide

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CAS No.

: 63779-86-2

Mol F.

: C7H7ClN4O5S2

Mol W.

: 326.73

Cat No.

: SA44632

Hydroxychloroquine, Impurities, Nitrosamine

N-Nitroso Hydroxychloroquine

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CAS No.

: NA

Mol F.

: C17H22ClN4O2

Mol W.

: 364.87

Cat No.

: SA23809

Impurities, Nitrosamine

N-Nitroso Imatinib

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CAS No.

Mol F.

: C29H30N8O2

Mol W.

: 522.6

Cat No.

: SA44686

Impurities, Nitrosamine

N-Nitroso Imidapril

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CAS No.

Mol F.

: C20H26N4O7

Mol W.

: 434.44

Cat No.

: SA44687

Impurities, Nitrosamine

N-Nitroso Isonipicotic Acid

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CAS No.

: 6238-69-3

Mol F.

: C6H10N2O3

Mol W.

: 158.2

Cat No.

: SA446132

Impurities, Isoproterenol, Nitrosamine

N-Nitroso Isoproterenol

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CAS No.

Mol F.

: C11H16N2O4

Mol W.

: 240.3

Cat No.

: SA25906

Impurities, Nitrosamine

N-Nitroso Labetalol

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CAS No.

: 2820170-74-7

Mol F.

: C19H23N3O4

Mol W.

: 357.4

Cat No.

: SA44688

Impurities, Lazertinib, Nitrosamine

N-Nitroso Lazertinib

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CAS No.

: NA

Mol F.

: C30H33N9O4

Mol W.

: 583.7

Cat No.

: SA53402

Impurities, Lercanidipine, Nitrosamine

N-Nitroso Lercanidipine

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CAS No.

: NA

Mol F.

: C36H40N4O7

Mol W.

: 640.7

Cat No.

: SA50918

Impurities, Linezolid, Nitrosamine

N-Nitroso Linezolid Descarbonyl Desacetamide Phthalimide (R)-Isomer

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CAS No.

: NA

Mol F.

: C21H21FN4O5

Mol W.

: 428.4

Cat No.

: SA17537

Impurities, Nitrosamine

N-Nitroso Meropenem

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CAS No.

: NA

Mol F.

: C17H24N4O6S

Mol W.

: 412.5

Cat No.

: SA44675

Impurities, Nitrosamine

N-Nitroso Methotrexate

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CAS No.

: NA

Mol F.

: C13H15N3O6

Mol W.

: 309.27

Cat No.

: SA44623

Impurities, Mirabegron, Nitrosamine

N-Nitroso Mirabegron

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CAS No.

: 3017159-61-1

Mol F.

: C21H23N5O3S

Mol W.

: 425.50

Cat No.

: SA53109

Impurities, Mirabegron, Nitrosamine

N-Nitroso Mirabegron EP Impurity B

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CAS No.

: 3032026-54-0

Mol F.

: C16H19N3O2

Mol W.

: 285.35

Cat No.

: SA53111

Impurities, Mirabegron, Nitrosamine

N-Nitroso Mirabegron EP Impurity F

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CAS No.

: 3032026-53-9

Mol F.

: C16H17N3O4

Mol W.

: 315.33

Cat No.

: SA53110

Impurities, Mirdametinib, Nitrosamine

N-Nitroso Mirdametinib

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CAS No.

: NA

Mol F.

: C16H13F3IN3O5

Mol W.

: 511.19

Cat No.

: SA53709

Impurities, Nitrosamine

N-Nitroso Mirtazapine EP Impurity D

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CAS No.

: NA

Mol F.

: C16H16N4O

Mol W.

: 280.3

Cat No.

: SA44627

Impurities, Lazertinib, Nitrosamine

N-Nitroso N-Desmethyl Lazertinib

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CAS No.

: NA

Mol F.

: C29H31N9O4

Mol W.

: 569.6

Cat No.

: SA53403