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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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Impurities, Nitrosamine

N-Nitroso Arotinolol

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CAS No.

Mol F.

: C15H20N4O3S3

Mol W.

: 400.53

Cat No.

: SA44682

Impurities, Nitrosamine

N-Nitroso Azelnidipine

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CAS No.

Mol F.

: C33H33N5O7

Mol W.

: 611.64

Cat No.

: SA44683

Azithromycin, Impurities, Nitrosamine

N-Nitroso Azithromycin EP Impurity A

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CAS No.

: NA

Mol F.

: C37H69N3O13

Mol W.

: 763.96

Cat No.

: SA10316

Impurities, Nitrosamine

N-Nitroso Blonanserin Impurity

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CAS No.

Mol F.

: C21H25FN4O

Mol W.

: 368.5

Cat No.

: SA44667

Impurities, Nitrosamine

N-Nitroso Bromocriptine

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CAS No.

: NA

Mol F.

: C32H39BrN6O6

Mol W.

: 683.6

Cat No.

: SA44630

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

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

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

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

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

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, 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, 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, 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, Nitrosamine, Tetracaine

N-Nitroso N’-Oxide Tetracaine Impurity

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CAS No.

: NA

Mol F.

: C15H23N3O4

Mol W.

: 309.37

Cat No.

: SA52607

Epinephrine, Impurities, Nitrosamine

N-Nitroso Norepinephrine

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CAS No.

: NA

Mol F.

: C8H10N2O4

Mol W.

: 198.18

Cat No.

: SA46501

Impurities, Nitrosamine

N-Nitroso Olanzapine

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CAS No.

: NA

Mol F.

: C17H19N5OS

Mol W.

: 341.4

Cat No.

: SA44617

Impurities, Nitrosamine

N-Nitroso Olopatadine N-Desmethyl Impurity

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CAS No.

Mol F.

: C20H20N2O4

Mol W.

: 352.4

Cat No.

: SA44660

Impurities, Nitrosamine, Palbociclib

N-Nitroso Palbociclib 2

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CAS No.

: NA

Mol F.

: C24H28N8O3

Mol W.

: 476.53

Cat No.

: SA40424

Impurities, Nitrosamine

N-Nitroso Pramipexole

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CAS No.

Mol F.

: C10H16N4OS

Mol W.

: 240.33

Cat No.

: SA44661

Impurities, Nitrosamine, Pregabalin

N-Nitroso Pregabalin

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CAS No.

Mol F.

: C7H14N2O3

Mol W.

: 174.2

Cat No.

: SA24842

Impurities, Nitrosamine, Pregabalin

N-Nitroso Pregabalin Impurity 48

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CAS No.

: 29882-69-7

Mol F.

: C8H10N2O

Mol W.

: 150.18

Cat No.

: SA24841

Impurities, Nitrosamine

N-Nitroso Promethazine Impurity

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CAS No.

: 94511-44-1

Mol F.

: C16H17N3OS

Mol W.

: 299.39

Cat No.

: SA44689

Impurities, Nitrosamine

N-Nitroso Propafenone

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CAS No.

Mol F.

: C21H26N2O4

Mol W.

: 370.44

Cat No.

: SA44658

Impurities, Nitrosamine

N-Nitroso Rabeprazole

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CAS No.

: NA

Mol F.

: C18H20N4O4S

Mol W.

: 388.4

Cat No.

: SA446121

Impurities, Nitrosamine

N-Nitroso Rabeprazole EP Impurity F

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CAS No.

: NA

Mol F.

: C7H5N3OS

Mol W.

: 179.2

Cat No.

: SA446119

Impurities, Nitrosamine

N-Nitroso Rabeprazole Sulfide

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CAS No.

: NA

Mol F.

: C18H20N4O3S

Mol W.

: 372.44

Cat No.

: SA446120

Impurities, Nitrosamine, Risdiplam

N-Nitroso Risdiplam Impurity

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CAS No.

: NA

Mol F.

: C22H22N8O2

Mol W.

: 430.46

Cat No.

: SA52312