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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, Ketorolac

1-Keto Ketorolac; Ketorolac EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 113502-52-6

Mol F.

: C14H11NO2

Mol W.

: 225.24

Cat No.

: SA36102

Ertugliflozin, Impurities

1-methoxy Ertugliflozin Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C23H29ClO8

Mol W.

: 468.92

Cat No.

: SA36804

Impurities, Ketorolac

1-Methoxy Methyl Ester Impurity

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Out of Stock

CAS No.

: 2469039-47-0

Mol F.

: C17H17NO4

Mol W.

: 299.32

Cat No.

: SA36111

Canagliflozin, Impurities

1-Methoxy Tetra Acetyl Canagliflozin

$145.00 25 mg

Out of Stock

CAS No.

Mol F.

: C33H35FO10S

Mol W.

: 642.19

Cat No.

: SA14910

Ethinylestradiol, Impurities

1-Methyl Estrone-3-acetate

Please enquire for price & pack size

Out of Stock

CAS No.

: 30903-07-2

Mol F.

: C21H26O3

Mol W.

: 326.43

Cat No.

: SA13135

Impurities, Isavuconazole

1-Methyl-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one

Please enquire for price & pack size

Out of Stock

CAS No.

: 2734004-61-4

Mol F.

: C8H8N2O2

Mol W.

: 164.2

Cat No.

: SA44126

Impurities, Palbociclib

1-Piperazin-N-oxide Palbociclib

Please enquire for price & pack size

Out of Stock

CAS No.

: 2174002-29-8

Mol F.

: C24H29N7O3

Mol W.

: 463.53

Cat No.

: SA40404

Gemcitabine, Impurities

1-β-D-Arabinofuranosyluracil

Please enquire for price & pack size

Out of Stock

CAS No.

: 3083-77-0

Mol F.

: C9H12N2O6

Mol W.

: 244.2

Cat No.

: SA44519

Azacitidine, Impurities

1-β-D-Ribofuranosyl-3-guanylurea

Please enquire for price & pack size

Out of Stock

CAS No.

: 4336-46-3

Mol F.

: C13H17N7O12

Mol W.

: 463.31

Cat No.

: SA37509

Impurities, Rilpivirine

1,1-Cyclohexanediacetic Acid Monoamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 99189-60-3

Mol F.

: C10H17NO3

Mol W.

: 199.25

Cat No.

: SA25408

Impurities, Palbociclib

1,1′-(2-nitropyridine-3,5-diyl)dipiperazine

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C13H20N6O2

Mol W.

: 292.34

Cat No.

: SA40436

Dutasteride, Impurities

1,2 Dihydro 5,6-Dehydro Dutasteride

Please enquire for price & pack size

Out of Stock

CAS No.

: 164656-21-7

Mol F.

: C27H30F6N2O2

Mol W.

: 528.53

Cat No.

: SA35210

Gemcitabine, Impurities

1,2-Bis(2,2-dimethyl-4H-1,3-dioxin-6-yl)ethane-1,2-diol

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C14H22O6

Mol W.

: 286.32

Cat No.

: SA44512

Dutasteride, Impurities

1,2-Dihydro 17-(2,5-Trifluoro Phenyl Benzoate) Dutasteride Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C27H31F6NO3

Mol W.

: 531.53

Cat No.

: SA35218

Dutasteride, Impurities

1,2-Dihydro 17-carboxylic acid dutastride impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 103335-55-3

Mol F.

: C19H29NO3

Mol W.

: 319.44

Cat No.

: SA35215

Dutasteride, Impurities

1,2-Dihydro 17-Carboxylic Methy Ester Dutastride impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C20H31NO3

Mol W.

: 333.46

Cat No.

: SA35216

Dutasteride, Impurities

1,2-Dihydro 17-Epi-(2,5-Trifluoro Phenyl Benzoate) Dutasteride Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C27H31F6NO3

Mol W.

: 531.53

Cat No.

: SA35217

Dutasteride, Impurities

1,2-Dihydro 17-Epimer Dutasteride Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C27H32F6N2O2

Mol W.

: 530.54

Cat No.

: SA35220

Impurities, Prednisolone

1,2-Dihydro Prednicarbate

$695.00 25 mg

Out of Stock

CAS No.

: 671225-26-6

Mol F.

: C27H38O8

Mol W.

: 490.58

Cat No.

: SA16706

Beclomethasone Dipropionate, Impurities

1,2-Dihydro-6,7-dehydrobeclometasone Dipropopionate

$255.00 25 mg

Out of Stock

CAS No.

Mol F.

: C28H37ClO7

Mol W.

: 521.04

Cat No.

: SA15607

Impurities, Triamcinolone Acetonide

1,2-DihydroTriamcinolone-16,17-Acetonide-21-Mesylate

$295.00 50 mg

Out of Stock

CAS No.

: 2367-73-9

Mol F.

: C25H35FO8S

Mol W.

: 514.6

Cat No.

: SA30217

Canagliflozin, Impurities

1,2-Dihydroxyethyl)-4-methylphenyl)tetrahydrofuran-3,4-diol

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H25FO5S

Mol W.

: 444.52

Cat No.

: SA14927

Ezetimibe, Impurities

1,2-Seco-ezetimibe-δ-lactone

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H21F2NO3

Mol W.

: 409.42

Cat No.

: SA14841

Argatroban, Impurities

1,2,3,4-Tetradehydro Argatroban

Please enquire for price & pack size

Out of Stock

CAS No.

: 951130-92-0

Mol F.

: C23H32N6O5S

Mol W.

: 504.6

Cat No.

: SA48415

Impurities, Isoquinoline

1,2,3,4-Tetrahydro-4,6-dihydroxy-2-methylisoquinoline HCl

Please enquire for price & pack size

Out of Stock

CAS No.

: 57196-61-9

Mol F.

: C10H14ClNO2

Mol W.

: 215.6

Cat No.

: SA19305

Impurities, Ritlecitinib

1,3-bis((2S,5R)-5-(7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-2-methylpiperidin-1-yl)propan-1-one

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C27H36N10O

Mol W.

: 516.64

Cat No.

: SA50007

Impurities, Trazodone

1,3-bis(4-(3-chlorophenyl)piperazin-1-yl)propane

Please enquire for price & pack size

Out of Stock

CAS No.

: 6323-09-7(base)

Mol F.

: C23H30Cl2N4

Mol W.

: 433.42

Cat No.

: SA30308

Impurities, Ritlecitinib

1,3-bis(6-methylpyridin-3-yl)urea

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C13H14N4O

Mol W.

: 242.28

Cat No.

: SA50001

Impurities, Pazopanib

1,3-Dimethyl-6-nitro-1H-indazole

Please enquire for price & pack size

Out of Stock

CAS No.

: 1354224-47-7

Mol F.

: C9H9N3O2

Mol W.

: 191.2

Cat No.

: SA51315

Exemestane, Impurities

1,4-Androstadiene-3,17-dione

Please enquire for price & pack size

Out of Stock

CAS No.

: 897-06-3

Mol F.

: C19H24O2

Mol W.

: 284.39

Cat No.

: SA19118

Empagliflozin, Impurities

1,4-Anhydro-1,5-dihydroxy-1-methoxyempagliflozin

Please enquire for price & pack size

Out of Stock

CAS No.

: 1620758-25-9

Mol F.

: C24H29ClO8

Mol W.

: 480.93

Cat No.

: SA15108

Empagliflozin, Impurities

1,4-Anhydro-1,5-dihydroxy-empagliflozin

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15107

Carbamazepine, Impurities

10-Acetyloxy Oxcarbazepine

Please enquire for price & pack size

Out of Stock

CAS No.

: 113952-21-9

Mol F.

: C17H14N2O4

Mol W.

: 310.3

Cat No.

: SA20332

Carbamazepine, Impurities

10-Bromo Oxcarbazepine

Please enquire for price & pack size

Out of Stock

CAS No.

: 113952-20-8

Mol F.

: C15H11BrN2O2

Mol W.

: 331.16

Cat No.

: SA20333

Carbamazepine, Impurities

10-Chloro Carbamazepine

$95.00 25 mg

Out of Stock

CAS No.

: 59690-92-5

Mol F.

: C15H11ClN2O

Mol W.

: 270.71

Cat No.

: SA20316

Impurities, Promethazine

10-Methylphenothiazine

Please enquire for price & pack size

Out of Stock

CAS No.

: 1207-72-3

Mol F.

: C13H11NS

Mol W.

: 213.3

Cat No.

: SA42905

Carbamazepine, Impurities

10-Oxo carbazepine

$95.00 25 mg

Out of Stock

CAS No.

: 28721-07-5

Mol F.

: C15H12N2O2

Mol W.

: 252.27

Cat No.

: SA20324

Carbamazepine, Impurities

10,11-Dichloro-10,11-dihydro-5H-dibenz[b,f]azepine-5-carboxamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 59690-98-1

Mol F.

: C15H12Cl2N2O

Mol W.

: 307.17

Cat No.

: SA20338

Carbamazepine, Impurities

10,11-Dihydro-10-hydroxy Carbamazepine

$95.00 25 mg

Out of Stock

CAS No.

: 29331-92-8

Mol F.

: C15H14N2O2

Mol W.

: 254.28

Cat No.

: SA20320

Impurities, Naloxone

10α-Hydroxynaloxone

Please enquire for price & pack size

Out of Stock

CAS No.

: 2139253-68-0

Mol F.

: C19H21NO5

Mol W.

: 343.37

Cat No.

: SA45108

Impurities, Norethindrone

10β-Hydroperoxy Norethindrone Acetate

Please enquire for price & pack size

Out of Stock

CAS No.

: 13236-11-8

Mol F.

: C22H28O5

Mol W.

: 372.45

Cat No.

: SA13431

Impurities, Levonorgestrel

10β-Hydroxy Levonorgestrel

Please enquire for price & pack size

Out of Stock

CAS No.

: 21508-50-9

Mol F.

: C21H28O3

Mol W.

: 328.45

Cat No.

: SA23727

Impurities, Norethindrone

10β-Hydroxy Norethindrone

Please enquire for price & pack size

Out of Stock

CAS No.

: 1236-00-6

Mol F.

: C20H26O3

Mol W.

: 314.42

Cat No.

: SA13417

19-Norandrostenedione, Impurities

10β-Hydroxy-19-norandrostene-3,17-dione

Please enquire for price & pack size

Out of Stock

CAS No.

: 5189-96-8

Mol F.

: C18H24O3

Mol W.

: 288.4

Cat No.

: SA15801

Eslicarbazepine, Impurities

11-acetyl-6H-benzo[b][1]benzazepin-5-one

Please enquire for price & pack size

Out of Stock

CAS No.

: 28291-63-6

Mol F.

: C16H13NO2

Mol W.

: 251.28

Cat No.

: SA28802

Hydrocortisone Valerate, Impurities

11-Epi-Hydrocortisone-17-valerate

Please enquire for price & pack size

Out of Stock

CAS No.

: 139755-29-6

Mol F.

: C26H38O6

Mol W.

: 446.58

Cat No.

: SA27307

Impurities, Oxcarbazepine

11-Hydroxy-5H-dibenzo[b,f]azepin-10(11H)-one

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C₁₄H₁₁NO₂

Mol W.

: 225.24

Cat No.

: SA12518

Halcinonide, Impurities

11-Keto halcinonide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C24H30ClFO5

Mol W.

: 452.94

Cat No.

: SA30402

Impurities, Methylprednisolone

11-Keto MethylPrednisolone Succinate

$255.00 25 mg

Out of Stock

CAS No.

Mol F.

: C26H32O8

Mol W.

: 472.53

Cat No.

: SA14415

Betamethasone Dipropionate, Impurities

11-Oxo-betamethasone Dipropionate

$175.00 25 mg

Out of Stock

CAS No.

: 64967-90-4

Mol F.

: C28H35FO7

Mol W.

: 502.57

Cat No.

: SA14513