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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, Oxcarbazepine

N-Formyl Oxcarbazepine; Oxcarbazepine EP Impurity K

$255.00 25 mg

In Stock

CAS No.

: 1346601-76-0

Mol F.

: C16H12N2O3

Mol W.

: 280.28

Cat No.

: SA12504

Impurities, Valacyclovir

N-Formyl Valacyclovir

Please enquire for price & pack size

In Stock

CAS No.

: 847670-62-6

Mol F.

: 352.35

Mol W.

: C14H20N6O5

Cat No.

: SA49502

Impurities, Lorcaserin

N-Hydroxy Lorcaserin

Please enquire for price & pack size

In Stock

CAS No.

: 1421747-19-4

Mol F.

: C11H14ClNO

Mol W.

: 211.69

Cat No.

: SA18805

Azilsartan, Impurities

N-Methyl Azilsartan Medoxomil

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C31H26N4O8

Mol W.

: 582.56

Cat No.

: SA42809

Impurities, Palbociclib

N-Methyl Palbociclib

Please enquire for price & pack size

In Stock

CAS No.

: 571189-51-0

Mol F.

: C25H31N7O2

Mol W.

: 461.56

Cat No.

: SA40408

Impurities, Ticagrelor

N-Nitrosamine Ticagrelor

Please enquire for price & pack size

In Stock

CAS No.

: 2476859-55-7

Mol F.

: C23H27F2N7O5S

Mol W.

: 551.57

Cat No.

: SA32526

Impurities, Tofacitinib

N-Nitroso 5,6-Dihydro Tofacitinib

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C16H21N7O2

Mol W.

: 343.4

Cat No.

: SA43327

Apixaban, Impurities

N-Nitroso Apixaban Amino Acid Impurity

$450.00 25 mg

In Stock

CAS No.

Mol F.

: C25H26N6O6

Mol W.

: 506.5

Cat No.

: SA39939

Impurities, Nitrosamine

N-Nitroso Atazanavir

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C8H13N3OS

Mol W.

: 199.27

Cat No.

: SA44680

Impurities, Nitrosamine

N-Nitroso Atropine

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C16H20N2O4

Mol W.

: 304.34

Cat No.

: SA47712

Impurities, Nitrosamine

N-Nitroso Azacyclonal

Please enquire for price & pack size

In Stock

CAS No.

: 1038-06-8

Mol F.

: C18H20N2O2

Mol W.

: 296.39999999999998

Cat No.

: SA44622

Impurities, Nitrosamine

N-Nitroso Benazepril

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C24H27N3O6

Mol W.

: 453.49

Cat No.

: SA29612

Impurities, Nitrosamine

N-Nitroso Bis(2-chloroethyl)amine

Please enquire for price & pack size

In Stock

CAS No.

: 67856-68-2

Mol F.

: C4H8Cl2N2O

Mol W.

: 171.03

Cat No.

: SA44663

Brimonidine, Impurities

N-Nitroso Brimonidine

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C11H9BrN6O

Mol W.

: 321.13

Cat No.

: SA20728

Brinzolamide, Impurities

N-Nitroso Brinzolamide

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C12H20N4O6S3

Mol W.

: 412.51

Cat No.

: SA47206

Bupropion, Impurities

N-Nitroso Bupropion

$125.00 50 mg

In Stock

CAS No.

: 2763780-10-3

Mol F.

: C13H17ClN2O2

Mol W.

: 268.74

Cat No.

: SA12238

Bupropion, Impurities

N-Nitroso Bupropion 3,5-Dichloro Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C13H16Cl2N2O2

Mol W.

: 303.18

Cat No.

: SA12246

Bupropion, Impurities

N-Nitroso Bupropion USP Related Compound A

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C13H17ClN2O2

Mol W.

: 268.7

Cat No.

: SA12243

Bupropion, Impurities

N-Nitroso Bupropion USP Related Compound B

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C13H17BrN2O2

Mol W.

: 313.19

Cat No.

: SA12244

Impurities, Nitrosamine

N-Nitroso Buspirone Impurity 1

Please enquire for price & pack size

In Stock

CAS No.

: 872826-80-7

Mol F.

: C8H11N5O

Mol W.

: 193.2

Cat No.

: SA25819

Impurities, Nitrosamine

N-Nitroso Cetirizine EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C17H18ClN3O

Mol W.

: 315.8

Cat No.

: SA44620

Ciprofloxacin, Impurities

N-Nitroso Ciprofloxacin

Please enquire for price & pack size

In Stock

CAS No.

: 864443-44-7

Mol F.

: C17H17FN4O4

Mol W.

: 360.12

Cat No.

: SA34713

Impurities, Nitrosamine

N-Nitroso Dabigatran Etexilate

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C34H40N8O6

Mol W.

: 656.73

Cat No.

: SA446101

Bupropion, Impurities

N-Nitroso Deschloro Bupropion

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C13H18N2O2

Mol W.

: 234.29

Cat No.

: SA12242

Colesevelam, Impurities

N-Nitroso Didecylamine

Please enquire for price & pack size

In Stock

CAS No.

: 69112-95-4

Mol F.

: C20H42N2O

Mol W.

: 326.56

Cat No.

: SA10217

Impurities, Nitrosamine

N-Nitroso Diltiazem EP Impurity G

$195.00 25 mg

In Stock

CAS No.

Mol F.

: C21H23N3O5S

Mol W.

: 429.49

Cat No.

: SA19531

Impurities, Nitrosamine

N-Nitroso Dobutamine

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C18H22N2O4

Mol W.

: 330.38

Cat No.

: SA446100

Impurities, Nitrosamine

N-Nitroso Dorzolamide

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C10H15N3O5S3

Mol W.

: 353.44

Cat No.

: SA24121

Duloxetine, Impurities

N-Nitroso Duloxetine

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C18H18N2O2S

Mol W.

: 326.41

Cat No.

: SA36317

Edoxaban, Impurities

N-Nitroso Edoxaban Desmethyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C23H27ClN8O5S

Mol W.

: 563

Cat No.

: SA33040

Impurities, Nitrosamine

N-Nitroso Enalapril

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C20H27N3O6

Mol W.

: 405.5

Cat No.

: SA44616

Impurities, Nitrosamine

N-Nitroso Escitalopram Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C19H18FN3O2

Mol W.

: 339.36

Cat No.

: SA21217

Impurities, Nitrosamine

N-Nitroso Ethyl Methyl Amine

Please enquire for price & pack size

In Stock

CAS No.

: 10595-95-6

Mol F.

: C3H8N2O

Mol W.

: 88.11

Cat No.

: SA446105

Impurities, Nitrosamine

N-Nitroso Hydrochlorothiazide

Please enquire for price & pack size

In Stock

CAS No.

: 63779-86-2

Mol F.

: C7H7ClN4O5S2

Mol W.

: 326.74

Cat No.

: SA11208

Impurities, Isavuconazole

N-Nitroso Isavuconazonium

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C35H34F2N9O6S+

Mol W.

: 746.76

Cat No.

: SA44127

Impurities, Nitrosamine

N-Nitroso Levalbuterol

Please enquire for price & pack size

In Stock

CAS No.

: 2919946-71-5

Mol F.

: C13H20N2O4

Mol W.

: 268.3

Cat No.

: SA26020

Impurities, Nitrosamine

N-Nitroso Lisinopril

$145.00 25 mg

In Stock

CAS No.

: 519175-80-5

Mol F.

: C21H30N4O6

Mol W.

: 434.49

Cat No.

: SA35712

Impurities, Nitrosamine

N-Nitroso Metoprolol

Please enquire for price & pack size

In Stock

CAS No.

: 138768-62-4

Mol F.

: C15H24N2O4

Mol W.

: 296.36

Cat No.

: SA41424

Impurities, Nitrosamine

N-Nitroso Moxifloxacin

$145.00 25 mg

In Stock

CAS No.

Mol F.

: C21H23FN4O5

Mol W.

: 430.43

Cat No.

: SA30720

Impurities, Nitrosamine

N-Nitroso N-Desmethyl Terbinafine

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C20H22N2O

Mol W.

: 306.39

Cat No.

: SA44626

Impurities, Nitrosamine

N-Nitroso Nordoxepin

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C18H18N2O2

Mol W.

: 294.4

Cat No.

: SA44656

Impurities, Nortriptyline

N-Nitroso Nortriptyline

Please enquire for price & pack size

In Stock

CAS No.

: 55855-42-0

Mol F.

: C19H20N2O

Mol W.

: 292.37

Cat No.

: SA50401

Bupropion, Impurities

N-Nitroso of 4-Fluoro Bupropion

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C13H17FN2O2

Mol W.

: 252.28

Cat No.

: SA12245

Impurities, Palbociclib

N-Nitroso Palbociclib 1

$145.00 25 mg

In Stock

CAS No.

Mol F.

: C24H28N8O3

Mol W.

: 476.53

Cat No.

: SA40426

Impurities, Nitrosamine

N-Nitroso Paliperidone; 6-Fluoro-3-(1-nitrosopiperidin-4- yl)benzo[d]isoxazole

Please enquire for price & pack size

In Stock

CAS No.

: 2416230-38-9

Mol F.

: C12H12FN3O2

Mol W.

: 249.24

Cat No.

: SA44614

Impurities, Nitrosamine

N-Nitroso paroxetine Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2361294-43-9

Mol F.

: C19H19FN2O4

Mol W.

: 358.4

Cat No.

: SA18317

Impurities, Nitrosamine

N-Nitroso Phenylephrine

Please enquire for price & pack size

In Stock

CAS No.

: 78658-64-7

Mol F.

: C9H12N2O3

Mol W.

: 196.2

Cat No.

: SA44664

Impurities, Nitrosamine

N-Nitroso Propranolol

Please enquire for price & pack size

In Stock

CAS No.

: 84418-35-9

Mol F.

: C16H20N2O3

Mol W.

: 288.34

Cat No.

: SA24617

Impurities, Nitrosamine

N-Nitroso Quinapril

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C25H29N3O6

Mol W.

: 467.51

Cat No.

: SA44698

Impurities, Nitrosamine

N-Nitroso Ramipril (Mixture of isomers)

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C23H31N3O6

Mol W.

: 445.51

Cat No.

: SA31318