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Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

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1-Methoxy Canagliflozin

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1-Methoxy Decane

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1-Methoxy Empagliflozin

$175.00 25 mg

In Stock

CAS No.

: 1279691-36-9; 915095-96-4

Mol F.

: C24H29ClO8

Mol W.

: 480.93

Cat No.

: SA15114

1-Methyl-4-nitrosopiperazine

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1-Naphthol

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1-Octadecanal

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,1,3,3-Tetramethylurea

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2 dihydro diethy carbonate Loteprednol

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro Beclomethasone Dipropionate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro Desoxymetasone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro Dutasteride Impurity

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro Exemestane

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro Loteprednol etabonate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydro-Betamethasone 17,21-Dipropionate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2-Dihydrodesonide

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In Stock

CAS No.

: 638-93-7

Mol F.

: C₂₄H₃₄O₆

Mol W.

: 418.52

Cat No.

: SA19009

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

$295.00 25 mg

In Stock

CAS No.

: 2367-73-9

Mol F.

: C25H35FO8S

Mol W.

: 514.6

Cat No.

: SA30419

1,2-DihydroTriamcinolone-16,17-Acetonide; Triamcinolone Acetonide EP Impurity E

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In Stock

CAS No.

: 1524-86-3

Mol F.

: C24H33FO6

Mol W.

: 436.51

Cat No.

: SA30420

1,2-epoxy Exemestane

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,2:5,6-Di-O-isopropylidene-D-glucitol

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,3-Dimethyl 2-[4-(methoxycarbonyl)-2-nitrophenyl]propanedioate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1,4-Dibromo-2-(4-ethoxybenzyl)benzene

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

10-(3-chloropropyl)-10H-phenothiazine

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

10-bromo-10,11-dihydro- 5H-Dibenz[b,f]azepine – f]azepine-5-carbonyl chloride

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

10-Methoxy Carbamazepine; Oxcarbazepine EP Impurity B

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

Impurities, Levonorgestrel

10-α-Hydroxy Levonorgestrel

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In Stock

CAS No.

: NA

Mol F.

: C21H28O3

Mol W.

: 328.45

Cat No.

: SA23728

Impurities, Naloxone

10β-Hydroxynaloxone

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In Stock

CAS No.

: 2139253-69-1

Mol F.

: C19H21NO5

Mol W.

: 343.37

Cat No.

: SA45109

11 Keto Clobetasol Propionate

$155.00 25 mg

In Stock

CAS No.

: 25122-56-9

Mol F.

: C25H30ClFO5

Mol W.

: 464.95

Cat No.

: SA17113

11-Desoxy 9-des fluoro Dexamethasone Impurity

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-desoxyprednisolone hemisuccinate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Epi Dexamethasone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Epihydrocortisone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Keto 17-carboxylic acid Loteprednol etabonate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Keto Loteprednol etabonate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Keto-BD-05; Impurity 1

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Ketotestosterone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-O-Formyl 21- Ethyl formate Dexamethasone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-Oxo Triamcinolone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11-β-Hydroxyandrostenedione

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

11β-Hydroxy-1,4-dien-3,17-androstendione

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

14,15-dehydro-BD-06; Impurity 5

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

16-Beta Isomer Desoximetasone imp

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

16-beta-Methyl Epoxide 17-Valerate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

16α-Hydroxy Prednisone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

17-Oxo Dexamethasone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

17-β hydroxyacid Loteprednol

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

17α-Hydroxy-11-deoxycorticosterone-21-acetate

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

17β-Carboxy-17-desoxy Dexamethasone

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

Dexamethasone, Impurities

17β-Carboxy-17α-formyloxy Dexamethasone

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In Stock

CAS No.

: 473273-04-0

Mol F.

: C₂₂H₂₇FO₆

Mol W.

: 406.44

Cat No.

: SA15512

1R, 2S, 3R-CAH impurity

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Not Available

CAS No.

Mol F.

Mol W.

Cat No.

1R,3S Benazepril

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Not Available