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Impurities

SynThink is a producer and supplier of a number of pharmaceutical Reference Standards (Impurity Standards) which are required for pharmaceutical companies to study quality, stability and biological safety of pharmaceutical products. Many API Impurities are available in our stock.

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Impurities, Omeprazole

Omeprazole EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 863029-89-4

Mol F.

: C16H16ClN3O2S

Mol W.

: 349.84

Cat No.

: SA19414

Impurities, Omeprazole

Omeprazole EP Impurity I

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Out of Stock

CAS No.

: 158812-85-2

Mol F.

: C17H19N3O5S

Mol W.

: 377.41

Cat No.

: SA19415

Impurities, Omeprazole

Omeprazole Hydroxymethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 86604-78-6

Mol F.

: C9H13NO2

Mol W.

: 167.2

Cat No.

: SA19402

Impurities, Ondansetron

Ondansetron

Please enquire for price & pack size

Out of Stock

CAS No.

: 99614-01-4;103639-04-9(dihydrate)

Mol F.

: C18H19N3O

Mol W.

: 293.36

Cat No.

: SA35800

Impurities, Ondansetron

Ondansetron EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 153139-56-1

Mol F.

: C16H20N2O

Mol W.

: 256.33999999999997

Cat No.

: SA35801

Impurities, Ondansetron

Ondansetron EP Impurity B; Ondansetron Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 1076198-52-1

Mol F.

: C37H38N6O2

Mol W.

: 598.73

Cat No.

: SA35802

Impurities, Ondansetron

Ondansetron EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 27387-31-1

Mol F.

: C13H13NO

Mol W.

: 199.25

Cat No.

: SA35803

Impurities, Ondansetron

Ondansetron EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 99614-64-9

Mol F.

: C14H13NO

Mol W.

: 211.26

Cat No.

: SA35804

Impurities, Ondansetron

Ondansetron EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C3H4N2

Mol W.

: 68.08

Cat No.

: SA35805

Impurities, Ondansetron

Ondansetron EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 693-98-1

Mol F.

: C4H6N2

Mol W.

: 82.1

Cat No.

: SA35806

Impurities, Ondansetron

Ondansetron EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 99614-03-6

Mol F.

: C17H17N3O

Mol W.

: 279.33999999999997

Cat No.

: SA35807

Donepezil, Impurities

Open-Ring Hydroxy Acid Donepezil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C24H31NO5

Mol W.

: 413.51

Cat No.

: SA34318

Donepezil, Impurities

Open-Ring Keto Acid Donepezil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 197010-25-6

Mol F.

: C24H28NNaO5

Mol W.

: 433.47

Cat No.

: SA34319

Impurities, Orphenadrine

Orphenadrine

Please enquire for price & pack size

Out of Stock

CAS No.

: 4682-36-4

Mol F.

: C18H23NO

Mol W.

: 269.38

Cat No.

: SA28300

Impurities, Orphenadrine

Orphenadrine EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 5472-13-9

Mol F.

: C14H14O

Mol W.

: 198.26

Cat No.

: SA28301

Impurities, Orphenadrine

Orphenadrine EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 131-58-8

Mol F.

: C14H12O

Mol W.

: 196.24

Cat No.

: SA28302

Impurities, Orphenadrine

Orphenadrine EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 17752-32-8

Mol F.

: C16H19NO

Mol W.

: 241.33

Cat No.

: SA28303

Impurities, Orphenadrine

Orphenadrine EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 147-24-0

Mol F.

: C17H21NO

Mol W.

: 255.35

Cat No.

: SA28304

Impurities, Orphenadrine

Orphenadrine EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 21945-86-8

Mol F.

: C18H23NO

Mol W.

: 269.38

Cat No.

: SA28305

Impurities, Orphenadrine

Orphenadrine EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 4024-34-4

Mol F.

: C18H23NO

Mol W.

: 269.38

Cat No.

: SA28306

Impurities, Orphenadrine

Orphenadrine N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 29215-00-7

Mol F.

: C18H23NO2

Mol W.

: 285.38

Cat No.

: SA28307

Impurities, Osimertinib

Osimertinib 2-Amide impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2213409-62-0

Mol F.

: C23H20FN5O2

Mol W.

: 417.4

Cat No.

: SA44710

Impurities, Osimertinib

Osimertinib Acetyl impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2227103-37-7

Mol F.

: C27H33N7O2

Mol W.

: 487.6

Cat No.

: SA44709

Impurities, Osimertinib

Osimertinib Impurity N

Please enquire for price & pack size

Out of Stock

CAS No.

: 1932710-29-6

Mol F.

: C31H35N7O3

Mol W.

: 553.65

Cat No.

: SA44707

Impurities, Osimertinib

Osimertinib Mesylate

Please enquire for price & pack size

Out of Stock

CAS No.

: 1421373-66-1

Mol F.

: C29H37N7O5S

Mol W.

: 595.71

Cat No.

: SA44713

Impurities, Osimertinib

Osimertinib N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C28H33N7O3

Mol W.

: 515.61

Cat No.

: SA44708

Impurities, Osimertinib

Osimertinib N,N’-Dioxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 2411395-23-6

Mol F.

: C28H33N7O4

Mol W.

: 531.6

Cat No.

: SA44706

Impurities, Osimertinib

Osimertinib N’-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1975982-94-5

Mol F.

: C28H33N7O3

Mol W.

: 515.61

Cat No.

: SA44711

Impurities, Raltegravir

Oxadiazole-2-carboxylic Acid Raltegravir Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 19703-92-5

Mol F.

: C4H4N2O3

Mol W.

: 128.09

Cat No.

: SA25616

Cinnarizine, Impurities

Oxatomide

Please enquire for price & pack size

Out of Stock

CAS No.

: 60607-34-3

Mol F.

: C₂₇H₃₀N₄O

Mol W.

: 426.55

Cat No.

: SA12409

Impurities, Oxcarbazepine

Oxcarbazepine N-Sulfate

Please enquire for price & pack size

Out of Stock

CAS No.

: 1159977-54-4

Mol F.

: C15H12N2O5S

Mol W.

: 332.33

Cat No.

: SA12513

Impurities, Oxcarbazepine

Oxcarbazepine O-Propan-1-one

$355.00 25 mg

Out of Stock

CAS No.

: 186694-22-4

Mol F.

: C18H18N2O3

Mol W.

: 310.35

Cat No.

: SA12514

Flurbiprofen, Impurities

Oxime Flurbiprofen

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C16H16FNO2

Mol W.

: 273.3

Cat No.

: SA14610

Citalopram, Impurities

Oxime Impurity of Escitalopram oxalate

Please enquire for price & pack size

Out of Stock

CAS No.

: 227954-88-3

Mol F.

: C20H23FN2O2

Mol W.

: 342.41

Cat No.

: SA17021

Diclofenac, Impurities

Oxindole

Please enquire for price & pack size

Out of Stock

CAS No.

: 59-48-3

Mol F.

: C₈H₇NO

Mol W.

: 133.15

Cat No.

: SA12710

Impurities, Indacaterol

Oxo-indacaterol

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C24H26N2O4

Mol W.

: 406.5

Cat No.

: SA48707

Ciprofloxacin, Impurities

Oxociprofloxacin

Please enquire for price & pack size

Out of Stock

CAS No.

: 103237-52-1

Mol F.

: C17H16FN3O4

Mol W.

: 345.33

Cat No.

: SA42012

Impurities, Oxymetazoline

Oxymetazoline EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391053-50-1

Mol F.

: C16H27ClN2O2

Mol W.

: 314.85

Cat No.

: SA44201

Impurities, Oxymetazoline

Oxymetazoline HCl

Please enquire for price & pack size

Out of Stock

CAS No.

: 2315-02-8

Mol F.

: C16H25ClN2O

Mol W.

: 296.84

Cat No.

: SA44207

Impurities, Oxymetazoline

Oxymetazoline Nitroso Impurity 1

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C16H23N3O2

Mol W.

: 289.39999999999998

Cat No.

: SA44206

Impurities, Tolterodine

P-Cresol Tolterodine impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 106-44-5

Mol F.

: C7H8O

Mol W.

: 108.14

Cat No.

: SA28206

Ezetimibe, Impurities

P-Fluoro (R)-Oxazolidone

Please enquire for price & pack size

Out of Stock

CAS No.

: 404874-93-7

Mol F.

: C21H20FNO3

Mol W.

: 353.39

Cat No.

: SA14849

Impurities, Levomilnacipran

p-Hydroxy Levomilnacipran Hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 688320-03-8

Mol F.

: C₁₅H₂₂N₂O₂•HCl

Mol W.

: 262.35

Cat No.

: SA29201

Impurities, Levomilnacipran

p-Hydroxy-Levomilnacipran Carbamoyl-β-D-glucuronide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C₂₂H₃₀N₂O₁₀

Mol W.

: 482.48

Cat No.

: SA29202

Ezetimibe, Impurities

P-Methyl oxazolidone

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C21H21NO4

Mol W.

: 351.39

Cat No.

: SA14844

Impurities, Palbociclib

Palbociclib

Please enquire for price & pack size

Out of Stock

CAS No.

: 571190-30-2

Mol F.

: C‚„H‚‰N‡O‚

Mol W.

: 447.53

Cat No.

: SA40400

Impurities, Palbociclib

Palbociclib 2-Hydroxy Acetyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2172256-78-7

Mol F.

: C15H17N3O3

Mol W.

: 287.3

Cat No.

: SA40430

Impurities, Palbociclib

Palbociclib 7A Regio-Isomer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1941177-47-4

Mol F.

: C33H45N7O4

Mol W.

: 603.75

Cat No.

: SA40442

Impurities, Palbociclib

Palbociclib Des Acetyl N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C22H27N7O2

Mol W.

: 421.5

Cat No.

: SA40440

Impurities, Palbociclib

Palbociclib Impurity 93

Please enquire for price & pack size

Out of Stock

CAS No.

: 2410426-60-5

Mol F.

: C22H30BrN5O3

Mol W.

: 492.41

Cat No.

: SA40441