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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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Dasatinib, Impurities

Dasatinib Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 910297-61-9

Mol F.

: C36H34Cl2N12O2S2

Mol W.

: 801.77

Cat No.

: SA40507

Dasatinib, Impurities

Dasatinib N1-Oxide

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Out of Stock

CAS No.

: NA

Mol F.

: C22H26ClN7O3S

Mol W.

: 504

Cat No.

: SA40504

Dasatinib, Impurities

Dasatinib N4-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 910297-52-8

Mol F.

: C‚‚H‚†ClN‡OƒS

Mol W.

: 504.00

Cat No.

: SA40503

Impurities, Rosuvastatin

De((3,5-dihydroxyhept-6-enoic Acid)N-methyl) Diphenylphosphinyl Rosuvastatin

Please enquire for price & pack size

Out of Stock

CAS No.

: 371775-72-3

Mol F.

: C27H27FN3O3PS

Mol W.

: 523.56

Cat No.

: SA12134

Impurities, Linezolid

Deacetamide Linezolid Phthalimide

Please enquire for price & pack size

Out of Stock

CAS No.

: 168828-89-5

Mol F.

: C₂₂H₂₀FN₃O₅

Mol W.

: 425.41

Cat No.

: SA17513

Impurities, Linezolid

Deacetyl (R)-Linezolid

Please enquire for price & pack size

Out of Stock

CAS No.

: 912359-80-9

Mol F.

: C₁₄H₁₈FN₃O₃

Mol W.

: 295.31

Cat No.

: SA17512

Impurities, Linezolid

Deacetyl Linezolid Thioacetamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 216868-57-4

Mol F.

: C₁₆H₂₀FN₃O₃S

Mol W.

: 353.41

Cat No.

: SA17510

Diltiazem, Impurities

Deacetyl-O-demethyl Diltiazem

$295.00 25 mg

Out of Stock

CAS No.

: 142926-10-1 (HBr); 84903-82-2

Mol F.

: C19H22N2O3S

Mol W.

: 358.46

Cat No.

: SA19513

Impurities, Lorcaserin

Dechloro 2-Methyl analog

Please enquire for price & pack size

Out of Stock

CAS No.

: 743374-52-9

Mol F.

: C11H15N

Mol W.

: 161.24

Cat No.

: SA18812

Clonixin, Impurities

Dechloro Chlonixin

Please enquire for price & pack size

Out of Stock

CAS No.

: 17782-05-7

Mol F.

: C13H12N2O2

Mol W.

: 228.25

Cat No.

: SA38001

Decitabine, Impurities

Decitabine

Please enquire for price & pack size

Out of Stock

CAS No.

: 2353-33-5

Mol F.

: C8H12N4O4

Mol W.

: 228.21

Cat No.

: SA42200

Decitabine, Impurities

Decitabine 3-Toluoyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 183016-21-9

Mol F.

: C16H18N4O5

Mol W.

: 346.34

Cat No.

: SA42208

Decitabine, Impurities

Decitabine 3-Toluoyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 183016-21-9

Mol F.

: C16H18N4O5

Mol W.

: 346.34

Cat No.

: SA42202

Decitabine, Impurities

Decitabine 6-Methyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 16352-06-0

Mol F.

: C4H6N4O

Mol W.

: 126.12

Cat No.

: SA42207

Decitabine, Impurities

Decitabine alpha-Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

: 22432-95-7

Mol F.

: C8H12N4O4

Mol W.

: 228.21

Cat No.

: SA42210

Decitabine, Impurities

Decitabine Amide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2514661-75-5

Mol F.

: C4H6N6O2

Mol W.

: 170.13

Cat No.

: SA42209

Decitabine, Impurities

Decitabine Imine Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2512207-76-8

Mol F.

: C4H6N6O2

Mol W.

: 170.13

Cat No.

: SA42201

Decitabine, Impurities

Decitabine Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 1126-46-1

Mol F.

: C8H7ClO2

Mol W.

: 170.59

Cat No.

: SA42205

Decitabine, Impurities

Decitabine Triazinone Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 931-86-2

Mol F.

: C3H4N4O

Mol W.

: 112.09

Cat No.

: SA42211

Decitabine, Impurities

Decitabine Urea Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 570410-72-9

Mol F.

: C7H14N4O4

Mol W.

: 218.21

Cat No.

: SA42212

Impurities, Venlafaxine

Decyclohexanol-ethoxycarbonyl-O-desmethyl Venlafaxine

Please enquire for price & pack size

Out of Stock

CAS No.

: 1346600-77-8

Mol F.

: C13H19NO3

Mol W.

: 237.29

Cat No.

: SA22723

Deferasirox, Impurities

DEF-I Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 688656-86-1

Mol F.

: C28H16N2O6S

Mol W.

: 508.5

Cat No.

: SA25116

Deferasirox, Impurities

Deferasirox

Please enquire for price & pack size

Out of Stock

CAS No.

: 201530-41-8

Mol F.

: C21H15N3O4

Mol W.

: 373.36

Cat No.

: SA25100

Deferasirox, Impurities

Deferasirox Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 1266741-05-2

Mol F.

: C22H17N3O4

Mol W.

: 387.39

Cat No.

: SA25103

Deferasirox, Impurities

Deferasirox Salicyloyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 1395346-28-7

Mol F.

: C28H19N3O6

Mol W.

: 493.46

Cat No.

: SA25108

Deferasirox, Impurities

Deferasirox sulfide dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 1688656-83-8

Mol F.

: C42H28N6O8S

Mol W.

: 776.77

Cat No.

: SA25109

Deferasirox, Impurities

Deferasirox sulfoxide dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 1688656-84-9

Mol F.

: C42H28N6O9S

Mol W.

: 792.77

Cat No.

: SA25110

Carisoprodol, Impurities

Dehydro Carisoprodol

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C₁₂H₂₂N₂O₄

Mol W.

: 258.31

Cat No.

: SA25305

Donepezil, Impurities

Dehydro Deoxy Donepezil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 120013-45-8

Mol F.

: C24H29NO2

Mol W.

: 363.49

Cat No.

: SA34311

Chlorpromazine, Impurities

Dehydro Desipramine impurity | CAS : 2010-13-1

Please enquire for price & pack size

Out of Stock

CAS No.

: 2010-13-1

Mol F.

: C18H21ClN2

Mol W.

: 300.83

Cat No.

: SA21619

Impurities, Olmesartan Medoxomil

Dehydro N2-Triphenylmethyl Olmesartan

Please enquire for price & pack size

Out of Stock

CAS No.

: 1797891-24-7

Mol F.

: C₄₃H₃₈N₆O₂

Mol W.

: 670.8

Cat No.

: SA17744

Impurities, Olmesartan Medoxomil

Dehydro N2-Triphenylmethyl Olmesartan Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 172875-70-6

Mol F.

: C₄₅H₄₂N₆O₂

Mol W.

: 698.85

Cat No.

: SA17745

Impurities, Nicardipine

Dehydro Nicardipine; USP Nicardipine Related Compound B

Please enquire for price & pack size

Out of Stock

CAS No.

: 59875-58-0(FreeBase);1216817-27-4(HCl)

Mol F.

: C26H27N3O6

Mol W.

: 477.51

Cat No.

: SA36202

Impurities, Olmesartan Medoxomil

Dehydro Olmesartan

$395.00 25 mg

Out of Stock

CAS No.

: 172875-98-8

Mol F.

: C24H24N6O2

Mol W.

: 428.49

Cat No.

: SA17735

Impurities, Olmesartan Medoxomil

Dehydro Olmesartan-2-trityl Medoxomil

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391052-99-5

Mol F.

: C₄₈H₄₂N₆O₅

Mol W.

: 782.88

Cat No.

: SA17743

Clomipramine, Impurities

Dehydrocloroimipramine

Please enquire for price & pack size

Out of Stock

CAS No.

: 2095-42-3; 2724726-85-4

Mol F.

: C20H22ClN

Mol W.

: 311.85

Cat No.

: SA33701

Celecoxib, Impurities

Dehydroxy Bromocelecoxib

Please enquire for price & pack size

Out of Stock

CAS No.

: 170570-75-9

Mol F.

: C₁₇H₁₃BrF₃N₃O₂S

Mol W.

: 460.27

Cat No.

: SA11309

Impurities, Levonorgestrel

Delta1 (10)-4, 5-dihydro-levonorgestrel

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C21H28O2

Mol W.

: 312.46

Cat No.

: SA23729

Impurities, Lorcaserin

Demethyl Lorcaserin

Please enquire for price & pack size

Out of Stock

CAS No.

: 25174-38-3

Mol F.

: C10H12ClN

Mol W.

: 181.66

Cat No.

: SA18802

Impurities, Ranitidine

Demethylamino Ranitidine Acetamide Sodium

Please enquire for price & pack size

Out of Stock

CAS No.

: 112251-56-6

Mol F.

: C12H18N3NaO4S

Mol W.

: 323.34

Cat No.

: SA26518

Impurities, Raltegravir

Deoxadiazole ethyl ester Raltegravir Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1193687-88-5

Mol F.

: C20H23FN4O6

Mol W.

: 434.42

Cat No.

: SA25609

Impurities, Raltegravir

Deoxadiazole methyl ester Raltegravir Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 518048-04-9

Mol F.

: C19H21FN4O6

Mol W.

: 420.39

Cat No.

: SA25613

Impurities, Raltegravir

Deoxadiazole oxalamide Raltegravir Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1193687-86-3

Mol F.

: C18H20FN5O5

Mol W.

: 405.38

Cat No.

: SA25611

Donepezil, Impurities

Deoxy Donepezil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 844694-84-4(base)

Mol F.

: C24H31NO2

Mol W.

: 365.51

Cat No.

: SA34312

Efavirenz, Impurities

Des cyclopropyl 4-(n-propylethynyl) Efavirenz

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C14H11ClF3NO2

Mol W.

: 317.69

Cat No.

: SA17605

Clotrimazole, Impurities

Des Imidazole 1-pyrazole

Please enquire for price & pack size

Out of Stock

CAS No.

: 289905-88-0

Mol F.

: C22H17ClN2

Mol W.

: 344.84

Cat No.

: SA11616

Impurities, Topiramate

Des-[4,5-O-(1-methylethylidene)] Topiramate

Please enquire for price & pack size

Out of Stock

CAS No.

: 205249-06-5

Mol F.

: C9H17NO6S

Mol W.

: 267.3

Cat No.

: SA45511

Fluticasone Propionate, Impurities

Des-Fluoromethyl S-Methyl Fluticasone Furoate

Please enquire for price & pack size

Out of Stock

CAS No.

: 397864-58-3

Mol F.

: C27H30F2O6S

Mol W.

: 520.59

Cat No.

: SA47005

Clomifene, Impurities

Des-N,N-diethylethanamine 4-Hydroxyclomiphene

Please enquire for price & pack size

Out of Stock

CAS No.

: 53775-07-8

Mol F.

: C20H15ClO

Mol W.

: 306.78

Cat No.

: SA21710

Amiodarone, Impurities

Des-O-[2-(diethylamino)ethyl]-1-methoxy Amiodarone

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391054-75-3

Mol F.

: C20H18I2O4

Mol W.

: 576.16

Cat No.

: SA26412