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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, Nebivolol

Nebivolol

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CAS No.

: 99200-09-6

Mol F.

: C₂₂H₂₅F₂NO₄

Mol W.

: 405.44

Cat No.

: SA14700

Impurities, Neomycin

Neomycin Impurity 5 (N-1 Compound)

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CAS No.

Mol F.

: C24H37N3O11

Mol W.

: 543.56

Cat No.

: SA51409

Impurities, Neomycin

Neomycin Sulfate EP Impurity B

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CAS No.

: NA

Mol F.

: C14H28N4O7

Mol W.

: 364.4

Cat No.

: SA51412

Impurities, Neomycin

Neomycin Sulfate EP Impurity C

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CAS No.

: 66-86-4

Mol F.

: C23H46N6O13

Mol W.

: 614.7

Cat No.

: SA51413

Impurities, Neomycin

Neomycin Sulfate EP Impurity F

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CAS No.

: 51795-47-2

Mol F.

: C23H45N5O14

Mol W.

: 615.6

Cat No.

: SA51414

Impurities, Neomycin

Neomycin Sulfate EP Impurity G

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CAS No.

: 54631-94-6

Mol F.

: C25H48N6O14

Mol W.

: 656.7

Cat No.

: SA51415

Impurities, Neomycin

Neomycin Sulfate Impurity E

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CAS No.

: 7542-37-2

Mol F.

: C23H45N5O14

Mol W.

: 615.63

Cat No.

: SA51410

Impurities, Neomycin

Neomycin Sulfate Impurity E (N-1 Compound)

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CAS No.

Mol F.

: C48H85N5O24

Mol W.

: 1116.21

Cat No.

: SA51411

Impurities, Neostigmine

Neostigmine Bromide

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CAS No.

: 114-80-7

Mol F.

: C12H19BrN2O2

Mol W.

: 303.2

Cat No.

: SA19706

Impurities, Neostigmine

Neostigmine Methyl Sulfate

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CAS No.

: 51-60-5

Mol F.

: C13H22N2O6S

Mol W.

: 334.39

Cat No.

: SA19707

Impurities, Nicardipine

Nicardipine

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CAS No.

: 55985-32-5

Mol F.

: C26H29N3O6

Mol W.

: 479.52

Cat No.

: SA36200

Impurities, Nicardipine

Nicardipine Bis Impurity

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CAS No.

: 71791-90-7

Mol F.

: C35H40N4O6

Mol W.

: 612.71

Cat No.

: SA36204

Impurities, Nicardipine

Nicardipine Dehydro Carboxylic Acid Impurity

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CAS No.

: 64603-72-1

Mol F.

: C16H14N2O6

Mol W.

: 330.29

Cat No.

: SA36205

Impurities, Nicardipine

Nicardipine Dehydro Dimethyl Diester

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CAS No.

: 76258-20-3

Mol F.

: C17H16N2O6

Mol W.

: 344.32

Cat No.

: SA36206

Impurities, Nicardipine

Nicardipine Impurity A

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CAS No.

: 87625-92-1

Mol F.

: C15H15NO5

Mol W.

: 289.28

Cat No.

: SA36211

Impurities, Nicardipine

Nicardipine Monoester Impurity

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CAS No.

: NA

Mol F.

: C15H16N2O4

Mol W.

: 288.3

Cat No.

: SA36209

Impurities, Nicardipine

Nicardipine N-Desbenzyl Impurity

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CAS No.

: 58368-87-9

Mol F.

: C19H23N3O6

Mol W.

: 389.4

Cat No.

: SA36208

Impurities, Nicardipine

Nicardipine Nitroso Impurity

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CAS No.

Mol F.

: C26H28N4O7

Mol W.

: 508.5

Cat No.

: SA36212

Impurities, Nicardipine

Nicardipine O-Desmethyl

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CAS No.

: 123973-71-7

Mol F.

: C25H25N3O6

Mol W.

: 463.48

Cat No.

: SA36207

Impurities, Nicotine

Nicotine

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CAS No.

: 54-11-5

Mol F.

: C10H14N2

Mol W.

: 162.23

Cat No.

: SA32200

Impurities, Nicotine

Nicotine EP Impurity G

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CAS No.

: 494-52-0(Base);15251-47-5(Salt)

Mol F.

: C10H14N2

Mol W.

: 162.23

Cat No.

: SA32207

Impurities, Nilotinib

Nilotinib

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CAS No.

: 641571-10-0

Mol F.

: C28H22F3N7O

Mol W.

: 529.52

Cat No.

: SA40600

Impurities, Nilotinib

Nilotinib 2-Pyridinyl Impurity

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CAS No.

: 66521-65-1

Mol F.

: C9H8N4

Mol W.

: 172.19

Cat No.

: SA40607

Impurities, Nilotinib

Nilotinib 3-Pyridinyl Impurity

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CAS No.

: 66521-66-2

Mol F.

: C9H8N4

Mol W.

: 173.19

Cat No.

: SA40608

Impurities, Nilotinib

Nilotinib Amide Impurity

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CAS No.

: 851137-91-2

Mol F.

: C17H15N5O

Mol W.

: 305.33

Cat No.

: SA40601

Impurities, Nilotinib

Nilotinib Amino Impurity

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CAS No.

: 641571-11-1

Mol F.

: C11H10F3N3

Mol W.

: 241.21

Cat No.

: SA40609

Impurities, Nilotinib

Nilotinib Bromo Impurity

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CAS No.

: 54962-75-3

Mol F.

: C‡H…BrFƒN

Mol W.

: 240.02

Cat No.

: SA40610

Impurities, Nilotinib

Nilotinib Carboxylic Acid Impurity

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CAS No.

: 641569-94-0

Mol F.

: C17H14N4O2

Mol W.

: 306.32

Cat No.

: SA40606

Impurities, Nilotinib

Nilotinib EP Impurity E; Desmethylimidazole Nilotinib Impurity

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CAS No.

: 2119583-26-3

Mol F.

: C27H20F3N7O

Mol W.

: 515.5

Cat No.

: SA40612

Impurities, Nilotinib

Nilotinib EP Impurity H; Nilotinib Regio Isomer Impurity

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CAS No.

: 641571-15-5

Mol F.

: C28H22F3N7O

Mol W.

: 529.52

Cat No.

: SA40611

Impurities, Nilotinib

Nilotinib Ethylimidazole Analog

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CAS No.

: 21195813-24-1

Mol F.

: C29H24F3N7O

Mol W.

: 543.54

Cat No.

: SA40602

Impurities, Nilotinib

Nilotinib Formyl Impurity

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CAS No.

: NA

Mol F.

: C17H14N4O

Mol W.

: 290.32

Cat No.

: SA40603

Impurities, Nilotinib

Nilotinib Iodo Impurity

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CAS No.

: 926922-18-1

Mol F.

: C‰H‚DƒFƒINƒO

Mol W.

: 488.26

Cat No.

: SA40604

Impurities, Nilotinib

Nilotinib Pyridine N-Oxide

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CAS No.

: 1246817-85-5

Mol F.

: C28H22F3N7O2

Mol W.

: 545.52

Cat No.

: SA40605

Impurities, Nintedanib

Nintedanib

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CAS No.

: 656247-17-5

Mol F.

: C₃₁H₃₃N₅O₄

Mol W.

: 539.62

Cat No.

: SA22503

Impurities, Nintedanib

Nintedanib Dimethyl Impurity

$195.00 25 mg

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CAS No.

Mol F.

: C15H24N4O

Mol W.

: 276.38

Cat No.

: SA22502

Impurities, Nintedanib

Nintedanib Esylate Impurity B

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CAS No.

: NA

Mol F.

: C32H35N5O4

Mol W.

: 553.65

Cat No.

: SA22533

Impurities, Nintedanib

Nintedanib Esylate Impurity C | CAS : 2519501-85-8

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CAS No.

: 519501-85-8

Mol F.

: C23H18N2O4

Mol W.

: 386.40

Cat No.

: SA22534

Nintedanib

Nintedanib Esylate Impurity E | CAS : 2380229-45-6

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CAS No.

: 2380229-45-6

Mol F.

: C33H35N5O5

Mol W.

: 581.66

Cat No.

: SA22535

Impurities, Nintedanib

Nintedanib Ethoxy Enolindole

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CAS No.

: 656247-19-7

Mol F.

: C19H17NO4

Mol W.

: 323.3

Cat No.

: SA22522

Impurities, Nintedanib

Nintedanib ethyl ester impurity

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CAS No.

Mol F.

: C32H35N5O4

Mol W.

: 553.66

Cat No.

: SA22523

Impurities, Nintedanib

Nintedanib N-Acyl Ethoxy Enolindole

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CAS No.

: 1175365-43-1

Mol F.

: C21H19NO5

Mol W.

: 365.38

Cat No.

: SA22526

Impurities, Nintedanib

Nintedanib N-Acyl Oxindole

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CAS No.

: 676326-36-6

Mol F.

: C12H11NO4

Mol W.

: 233.22

Cat No.

: SA22524

Impurities, Nintedanib

Nintedanib N, N-Dimethyl Amine

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CAS No.

: 2454314-41-9

Mol F.

: C19H18N2O3

Mol W.

: 322.4

Cat No.

: SA22521

Impurities, Nintedanib, Nitrosamine

Nintedanib Nitroso Impurity 1

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CAS No.

Mol F.

: C31H32N6O5

Mol W.

: 568.62

Cat No.

: SA22530

Impurities, Nintedanib

Nintedanib Piperazinyl N’- oxide

$245.00 25 mg

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CAS No.

Mol F.

: C31H35N5O5

Mol W.

: 557.64

Cat No.

: SA22528

Impurities, Niraparib

Niraparib carboxylic acid metabolite M1

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CAS No.

: 1476777-06-6

Mol F.

: C19H19N3O2

Mol W.

: 321.37

Cat No.

: SA50601

Impurities, Niraparib

Niraparib HCl

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CAS No.

: 1038915-64-8

Mol F.

: C19H21ClN4O

Mol W.

: 356.85

Cat No.

: SA50600

Impurities, Niraparib

Niraparib Impurity B

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CAS No.

Mol F.

: C24H28N4O3

Mol W.

: 420.5

Cat No.

: SA50602

Impurities, Niraparib

Niraparib Impurity E

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CAS No.

Mol F.

: C19H18N4O

Mol W.

: 318.37

Cat No.

: SA50603