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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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Hydrochlorothiazide, Impurities

Hydrochlorothiazide EP Impurity A

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In Stock

CAS No.

: 58-94-6

Mol F.

: C7H6ClN3O4S2

Mol W.

: 295.73

Cat No.

: SA11203

Hydrochlorothiazide, Impurities

Hydrochlorothiazide EP Impurity B

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In Stock

CAS No.

: 121-30-2

Mol F.

: C₆H₈ClN₃O₄S₂

Mol W.

: 285.73

Cat No.

: SA11204

Hydrocortisone, Impurities

Hydrocortisone 16, 17-hydro-17-carboxylic acid

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In Stock

CAS No.

: 2394-25-4

Mol F.

: C20H28O4

Mol W.

: 332.43

Cat No.

: SA15224

Hydrocortisone, Impurities

Hydrocortisone 17-Butyrate 3-Enol Methyl Ether

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In Stock

CAS No.

Mol F.

: C26H38O6

Mol W.

: 446.58

Cat No.

: SA15216

Hydrocortisone Valerate, Impurities

Hydrocortisone 17-Valerate 21-Acetate

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In Stock

CAS No.

: 81456-46-4

Mol F.

: C28H40O7

Mol W.

: 488.61

Cat No.

: SA27303

Hydrocortisone, Impurities

Hydrocortisone 17,21-Butarate Impurity

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In Stock

CAS No.

Mol F.

: C29H42O7

Mol W.

: 502.64

Cat No.

: SA15220

Hydrocortisone, Impurities

Hydrocortisone 21-Butyrate

$155.00 25 mg

In Stock

CAS No.

: 6677-99-2

Mol F.

: C25H36O6

Mol W.

: 432.55

Cat No.

: SA15201

Hydrocortisone, Impurities

Hydrocortisone 21-Valerate

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In Stock

CAS No.

: 6678-00-8

Mol F.

: C26H38O6

Mol W.

: 446.58

Cat No.

: SA15217

Cortisone Acetate, Impurities

Hydrocortisone acetate EP Impurity E

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In Stock

CAS No.

: 7753-60-8

Mol F.

: C23H30O5

Mol W.

: 386.49

Cat No.

: SA43201

Hydrocortisone, Impurities

Hydrocortisone Cortienyl Aldehyde Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C20H28O4

Mol W.

: 332.4

Cat No.

: SA15230

Hydrocortisone, Impurities

Hydrocortisone EP Impurity B

$75.00 25 mg

In Stock

CAS No.

: 53-06-5

Mol F.

: C₂₁H₂₈O₅

Mol W.

: 360.44

Cat No.

: SA15203

Hydrocortisone, Impurities

Hydrocortisone EP Impurity C

$25.00 25 mg

In Stock

CAS No.

: 50-03-3

Mol F.

: C23H32O6

Mol W.

: 404.5

Cat No.

: SA15204

Hydrocortisone, Impurities

Hydrocortisone EP Impurity E

$185.00 25 mg

In Stock

CAS No.

: 600-99-7

Mol F.

: C₂₁H₂₈O₅

Mol W.

: 360.44

Cat No.

: SA15206

Hydrocortisone, Impurities

Hydrocortisone EP Impurity F

$95.00 25 mg

In Stock

CAS No.

: 152-58-9

Mol F.

: C21H30O4

Mol W.

: 346.46

Cat No.

: SA15207

Hydrocortisone, Impurities

Hydrocortisone EP Impurity G

$255.00 25 mg

In Stock

CAS No.

: 14760-49-7

Mol F.

: C21H30O6

Mol W.

: 378.46

Cat No.

: SA15208

Hydrocortisone, Impurities

Hydrocortisone EP Impurity H

$495.00 25 mg

In Stock

CAS No.

Mol F.

: C21H30O6

Mol W.

: 378.46

Cat No.

: SA15209

Hydrocortisone, Impurities

Hydrocortisone EP Impurity N

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In Stock

CAS No.

Mol F.

: C42H58O10

Mol W.

: 722.9

Cat No.

: SA15223

Hydrocortisone, Impurities

Hydrocortisone Impurity L

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In Stock

CAS No.

: 641-77-0

Mol F.

: C21H30O4

Mol W.

: 346.47

Cat No.

: SA15211

Hydrocortisone, Impurities

Hydrocortisone Oxo Acetic Acid

Please enquire for price & pack size

In Stock

CAS No.

: 33762-00-4

Mol F.

: C21H28O5

Mol W.

: 360.44

Cat No.

: SA15229

Bupropion, Impurities

Hydroxy Bupropion

$125.00 25 mg

In Stock

CAS No.

: 357399-43-0

Mol F.

: C13H18ClNO2

Mol W.

: 255.74

Cat No.

: SA12203

Empagliflozin, Impurities

Hydroxy Empagliflozin Impurity

$205.00 25 mg

In Stock

CAS No.

: 1279691-35-8

Mol F.

: C23H27ClO8

Mol W.

: 466.91

Cat No.

: SA15102

Hydroxychloroquine, Impurities

Hydroxychloroquine-N-Oxide

Please enquire for price & pack size

In Stock

CAS No.

: 1449223-88-4

Mol F.

: C18H26ClN3O2

Mol W.

: 351.88

Cat No.

: SA23802

Hydroxychloroquine, Impurities

Hydroxychloroquine-O-Sulphate

Please enquire for price & pack size

In Stock

CAS No.

: 103152-84-7

Mol F.

: C18H25ClN3O4S.Na

Mol W.

: 441.93

Cat No.

: SA23801

Amlodipine, Impurities

Hydroxyethyl Phthalyl Amlodipine

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C30H34ClN3O8

Mol W.

: 600.06

Cat No.

: SA30520

Hydroxyprogesterone Caproate, Impurities

Hydroxyprogesterone Caproate impurity A

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In Stock

CAS No.

: 68-96-2

Mol F.

: C21H30O3

Mol W.

: 330.46

Cat No.

: SA18200

Hydroxyprogesterone Caproate, Impurities

Hydroxyprogesterone Caproate impurity E

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C23H29F3O4

Mol W.

: 426.47

Cat No.

: SA18204

Colesevelam, Impurities

Hydroxyquat

$70.00 25 mg

In Stock

CAS No.

: 118843-18-8

Mol F.

: C9H22BrNO

Mol W.

: 240.18

Cat No.

: SA10212

Hyoscine Butylbromide, Impurities

Hyoscine Butylbromide EP Impurity C

Please enquire for price & pack size

In Stock

CAS No.

: 155-41-9

Mol F.

: C18H24BrNO4

Mol W.

: 398.29

Cat No.

: SA46103

Hyoscine Butylbromide, Impurities

Hyoscine Butylbromide EP Impurity D

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In Stock

CAS No.

: NA

Mol F.

: C20H28BrNO4

Mol W.

: 426.34

Cat No.

: SA46104

Hyoscine Butylbromide, Impurities

Hyoscine Butylbromide EP Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 22235-98-9 (HCl); 14861-14-4 (Base)

Mol F.

: C20H28ClNO4

Mol W.

: 381.89

Cat No.

: SA46105

Hyoscine Butylbromide, Impurities

Hyoscine Butylbromide EP Impurity F

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In Stock

CAS No.

: NA

Mol F.

: C21H30BrNO4

Mol W.

: 440.37

Cat No.

: SA46106

Ibrutinib, Impurities

Ibrutinib Acetyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1288338-95-3

Mol F.

: C24H24N6O2

Mol W.

: 428.5

Cat No.

: SA47401

Ibrutinib, Impurities

Ibrutinib Boc-Amine Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1022150-11-3

Mol F.

: C27H30N6O3

Mol W.

: 486.6

Cat No.

: SA47405

Ibrutinib, Impurities

Ibrutinib deacryloylpiperidine; Ibrutinib N-Despiperidinyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 330786-24-8

Mol F.

: C17H13N5O

Mol W.

: 303.32

Cat No.

: SA47418

Ibrutinib, Impurities

Ibrutinib Methoxy Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2031255-26-0

Mol F.

: C26H28N6O3

Mol W.

: 472.55

Cat No.

: SA47417

Ibrutinib, Impurities

Ibrutinib N-Oxide Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2417548-74-2

Mol F.

: C25H24N6O3

Mol W.

: 456.5

Cat No.

: SA47400

Ibrutinib, Impurities

Ibrutinib Propionamide Impurity

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In Stock

CAS No.

: 1839099-22-7

Mol F.

: C25H26N6O2

Mol W.

: 442.5

Cat No.

: SA47403

Ibrutinib, Impurities

Ibrutinib S-isomer Impurity

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In Stock

CAS No.

: 936563-97-2

Mol F.

: C25H24N6O2

Mol W.

: 440.5

Cat No.

: SA47406

Carbamazepine, Impurities

Iminostilbene acetate

$95.00 25 mg

In Stock

CAS No.

: 19209-60-0

Mol F.

: C16H13NO

Mol W.

: 235.28

Cat No.

: SA20307

Clomipramine, Impurities

Imipramine

$95.00 25 mg

In Stock

CAS No.

: 113-52-0

Mol F.

: C19H24N2

Mol W.

: 280.41

Cat No.

: SA33705

Imipramine, Impurities

Imipramine EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 58262-51-4

Mol F.

: C19H23ClN2

Mol W.

: 314.85

Cat No.

: SA45801

Betamethasone, Impurities

Impurity at RRT 0.49 Spiro Impurity

$495.00 25 mg

In Stock

CAS No.

Mol F.

: C22H27FO4

Mol W.

: 374.45

Cat No.

: SA26612

Impurities, Indacaterol

Indacaterol Related Compound 1

$500.00 25 mg

In Stock

CAS No.

: 1026461-20-0

Mol F.

: C22H24N2O3

Mol W.

: 364.44

Cat No.

: SA48706

Impurities, Indacaterol

Indacaterol S-Enantiomer; (S)-Indacaterol

$500.00 25 mg

In Stock

CAS No.

: 1235445-80-3 (Base); 1384188-70-8 (HCl)

Mol F.

: C24H28N2O3

Mol W.

: 392.49

Cat No.

: SA48704

Fluticasone Furoate, Impurities

Iodo Fluticasone Furoate

$300.00 25 mg

In Stock

CAS No.

Mol F.

: C27H29F2IO6S

Mol W.

: 646.48

Cat No.

: SA48212

Apixaban, Impurities

Iodophenyl Ethyl Ester Apixaban Impurity

$245.00 25 mg

In Stock

CAS No.

: 473927-64-9

Mol F.

: C22H20IN3O4

Mol W.

: 517.32

Cat No.

: SA39917

Impurities, Ipratropium Bromide

Ipratropium EP Impurity A

$150.00 25 mg

In Stock

CAS No.

: 58005-18-8

Mol F.

: C11H22BrNO

Mol W.

: 264.2

Cat No.

: SA36001

Impurities, Ipratropium Bromide

Ipratropium EP Impurity B; 8-anti-Ipratropium Bromide

$450.00 25 mg

In Stock

CAS No.

: 58073-59-9

Mol F.

: C20H30BrNO3

Mol W.

: 412.36

Cat No.

: SA36002

Impurities, Ipratropium Bromide

Ipratropium EP Impurity C; Tropic Acid

$80.00 25 mg

In Stock

CAS No.

: 552-63-6

Mol F.

: C9H10O3

Mol W.

: 166.17

Cat No.

: SA36003

Impurities, Ipratropium Bromide

Ipratropium EP Impurity D; Atropic Acid

$80.00 25 mg

In Stock

CAS No.

: 492-38-6

Mol F.

: C9H8O2

Mol W.

: 148.16

Cat No.

: SA36004