Home / Products / Impurities

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.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Impurities, Vildagliptin

N-Nitroso Vildagliptin Amide Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H26N4O4

Mol W.

: 350.41

Cat No.

: SA23920

Impurities, Nitrosamine

N-Nitroso Voglibose

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C10H20N2O8

Mol W.

: 296.3

Cat No.

: SA44669

Carbamazepine, Impurities

N-Nitroso-5H-dibenz(b,f)azepine

$195.00 25 mg

Out of Stock

CAS No.

: 38652-29-8

Mol F.

: C14H10N2O

Mol W.

: 222.24

Cat No.

: SA20340

Impurities, Nitrosamine

N-Nitroso-Betahistine

Please enquire for price & pack size

Out of Stock

CAS No.

: 32635-81-7

Mol F.

: C8H11N3O

Mol W.

: 165.2

Cat No.

: SA44674

Impurities, Nitrosamine

N-Nitroso-betaxolol

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C18H28N2O4

Mol W.

: 336.43

Cat No.

: SA44684

Impurities, Nitrosamine

N-Nitroso-Felodipine

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C18H18Cl2N2O5

Mol W.

: 413.3

Cat No.

: SA37104

Impurities, Nitrosamine

N-Nitroso-Levofloxacin impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1152314-62-9

Mol F.

: C17H17FN4O5

Mol W.

: 376.3

Cat No.

: SA44653

Impurities, Nitrosamine

N-Nitroso-Meglumine

Please enquire for price & pack size

Out of Stock

CAS No.

: 10356-92-0

Mol F.

: C7H16N2O6

Mol W.

: 224.21

Cat No.

: SA44677

Impurities, Rosuvastatin

N-Nitroso-N-Desmethyl Rosuvastatin

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C21H25FN4O7S

Mol W.

: 496.5

Cat No.

: SA121134

Impurities, Nitrosamine

N-Nitroso-N-isopropyl-4-aminobutyric Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 2624122-60-5

Mol F.

: C7H14N2O3

Mol W.

: 174.2

Cat No.

: SA44649

Impurities, Nitrosamine

N-Nitroso-N-methyl-4-aminobutyric Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 61445-55-4

Mol F.

: C5H10N2O3

Mol W.

: 146.13999999999999

Cat No.

: SA44644

Impurities, Nitrosamine

N-Nitroso-N-methylbutylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 7068-83-9

Mol F.

: C5H12N2O

Mol W.

: 116.16

Cat No.

: SA44646

Impurities, Nitrosamine

N-Nitroso-N-n-butyl-N-isopropylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 2680532-87-8

Mol F.

: C7H16N2O

Mol W.

: 144.21

Cat No.

: SA44647

Impurities, Nitrosamine

N-Nitroso-Pramipexole

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C10H16N4OS

Mol W.

: 240.3

Cat No.

: SA44659

Impurities, Nitrosamine

N-Nitroso-Rasagiline

Please enquire for price & pack size

Out of Stock

CAS No.

: 2470278-90-9

Mol F.

: C12H12N2O

Mol W.

: 508.5

Cat No.

: SA44657

Impurities, Nitrosamine

N-Nitroso-Sertraline

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H16Cl2N2O

Mol W.

: 335.2

Cat No.

: SA44673

Impurities, Nitrosamine

N-Nitroso-Vancomycin

Please enquire for price & pack size

Out of Stock

CAS No.

: 155386-25-7

Mol F.

: C66H74Cl2N10O25

Mol W.

: 1478.25

Cat No.

: SA44693

Impurities, Nitrosamine

N-Nitrosodibenzylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 5336-53-8

Mol F.

: C14H14N2O

Mol W.

: 226.27

Cat No.

: SA44636

Impurities, Nitrosamine

N-Nitrosodibutylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 924-16-3

Mol F.

: C8H18N2O

Mol W.

: 158.24

Cat No.

: SA44603

Impurities, Nitrosamine

N-Nitrosodiethanolamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 1116-54-7

Mol F.

: C4H10N2O3

Mol W.

: 134.13

Cat No.

: SA44642

Impurities, Nitrosamine

N-Nitrosodiethylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 55-18-5

Mol F.

: C4H10N2O

Mol W.

: 102.13

Cat No.

: SA44643

Impurities, Nitrosamine

N-Nitrosodiisopropylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 601-77-4

Mol F.

: C6H14N2O

Mol W.

: 130.19

Cat No.

: SA44651

Impurities, Nitrosamine

N-Nitrosodipropylamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 621-64-7

Mol F.

: C6H14N2O

Mol W.

: 130.19

Cat No.

: SA44650

Impurities, Nitrosamine

N-Nitrosofenfluramine

Please enquire for price & pack size

Out of Stock

CAS No.

: 19023-40-6

Mol F.

: C12H15F3N2O

Mol W.

: 260.26

Cat No.

: SA44638

Impurities, Nitrosamine

N-Nitrosomorpholine

Please enquire for price & pack size

Out of Stock

CAS No.

: 59-89-2

Mol F.

: C4H8N2O2

Mol W.

: 116.12

Cat No.

: SA44641

Impurities, Nitrosamine

N-Nitrosonadolol

Please enquire for price & pack size

Out of Stock

CAS No.

: 134720-06-2

Mol F.

: C17H26N2O5

Mol W.

: 338.4

Cat No.

: SA44633

Impurities, Nitrosamine

N-Nitrososarcosine

Please enquire for price & pack size

Out of Stock

CAS No.

: 13256-22-9

Mol F.

: C3H6N2O3

Mol W.

: 118.09

Cat No.

: SA44634

Impurities, Trimetazidine

N-Oxide Trimetazidine Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C14H22N2O4

Mol W.

: 282.34

Cat No.

: SA35113

Impurities, Pregabalin

N-Phenyl-rac-pregabalin

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C14H21NO2

Mol W.

: 235.32

Cat No.

: SA24817

Impurities, Sitagliptin

N-phosphate Impurity

$395.00 25 mg

Out of Stock

CAS No.

: 1351498-25-3

Mol F.

: C16H16F6N5O4P

Mol W.

: 487.29

Cat No.

: SA10424

Gabapentin, Impurities

N-tert-Butyloxycarbonyl Gabapentin

Please enquire for price & pack size

Out of Stock

CAS No.

: 227626-60-0

Mol F.

: C₁₄H₂₅NO₄

Mol W.

: 271.35000000000002

Cat No.

: SA22809

Brimonidine, Impurities

N-tert-Butyloxycarbonyl Hydroxy Brimonidine

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391053-57-8

Mol F.

: C16H20BrN5O3

Mol W.

: 410.27

Cat No.

: SA20715

Impurities, Losartan

N-Valerylglycine

Please enquire for price & pack size

Out of Stock

CAS No.

: 24003-66-5

Mol F.

: C7H13NO3

Mol W.

: 159.18

Cat No.

: SA26720

Diltiazem, Impurities

N,N-Didesmethyl Diltiazem

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C20H22N2O4S

Mol W.

: 386.47

Cat No.

: SA19526

Impurities, Ulipristal

N,N-Didesmethyl Ulipristal

Please enquire for price & pack size

Out of Stock

CAS No.

: 244206-52-8

Mol F.

: C26H31NO3

Mol W.

: 405.53

Cat No.

: SA27904

Impurities, Ulipristal

N,N-Didesmethyl Ulipristal Acetate

Please enquire for price & pack size

Out of Stock

CAS No.

: 244206-49-3

Mol F.

: C28H33NO4

Mol W.

: 447.56

Cat No.

: SA27902

Impurities, Pregabalin

N,N-Diethyl-5-methyl-3-(nitromethyl)hexanamide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C12H24N2O3

Mol W.

: 244.33

Cat No.

: SA24831

Impurities, Metformin

N,N-Dimethyl Guanylmelamine

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C6H12N8

Mol W.

: 196.21

Cat No.

: SA27507

Impurities, Tadalafil

N,N-Dimethyl Tadalafil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C23H21N3O4

Mol W.

: 403.43

Cat No.

: SA20911

Impurities, Zolpidem

N,N-Dimethyl-4-oxo-4-(p-tolyl)butanamid

Please enquire for price & pack size

Out of Stock

CAS No.

: 402470-91-1

Mol F.

: C₁₃H₁₇NO₂

Mol W.

: 219.28

Cat No.

: SA43006

Impurities, Venlafaxine

N,N,N,-Tridesmethyl Venlafaxine N-Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C31H46N2O4

Mol W.

: 510.71

Cat No.

: SA22728

Impurities, Nitrosamine

N,N,N’-trimethyl-N’-nitrosopropane-1,3-diamine

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C6H15N3O

Mol W.

: 145.2

Cat No.

: SA44604

Diltiazem, Impurities

N,N,O-Tridesmethyl Diltiazem

$595.00 25 mg

Out of Stock

CAS No.

: 159734-23-3

Mol F.

: C19H20N2O4S

Mol W.

: 372.44

Cat No.

: SA19519

Impurities, Nitrosamine

N,N’-(ethane-1,2-diyl)bis(N-(2-aminoethyl)nitrous amide)

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C6H16N6O2

Mol W.

: 204.23

Cat No.

: SA44679

Aciclovir, Impurities

N,N’-[1,2-Ethanediylbis[oxymethylene(1,6-dihydro-6-oxo-9H-purine-9,2-diyl)]]bisacetamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1417988-85-2

Mol F.

: C18H20N10O6

Mol W.

: 472.41

Cat No.

: SA21410

Impurities, Linezolid

N,O-Desethylene Linezolid

Please enquire for price & pack size

Out of Stock

CAS No.

: 1219708-30-1

Mol F.

: C₁₄H₁₈FN₃O₄

Mol W.

: 311.31

Cat No.

: SA17507

Impurities, Riociguat

N’-(4,6-Diamino-2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)pyrimidin-5-yl)-N,N-dimethylformimidamide

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C20H20FN9

Mol W.

: 405.4

Cat No.

: SA50823

Aciclovir, Impurities

N2-Acetyl Aciclovir Benzoate

Please enquire for price & pack size

Out of Stock

CAS No.

: 133186-23-9

Mol F.

: C17H17N5O5

Mol W.

: 371.35

Cat No.

: SA21423

Impurities, Olmesartan Medoxomil

N2-Trityl O-Methyl Ether Olmesartan Acid

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C₄₄H₄₂N₆O₃

Mol W.

: 702.84

Cat No.

: SA17749

Impurities, Olmesartan Medoxomil

N2-Trityl O-Methyl Ether Olmesartan Acid Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C₄₆H₄₆N₆O₃

Mol W.

: 730.89

Cat No.

: SA17750