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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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Clomipramine, Impurities

Iminodibenzyl

$85.00 25 mg

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CAS No.

: 494-19-9

Mol F.

: C14H13N

Mol W.

: 195.26

Cat No.

: SA33704

Carbamazepine, Impurities

Iminodibenzyl 5-Carbonyl Chloride

$95.00 25 mg

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CAS No.

: 33948-19-5

Mol F.

: C15H12ClNO

Mol W.

: 257.71

Cat No.

: SA20302

Carbamazepine, Impurities

Iminostilbene 10,11-Epoxide-N-carbonyl Chloride

$395.00 25 mg

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CAS No.

: 41359-09-5

Mol F.

: C15H10ClNO2

Mol W.

: 271.7

Cat No.

: SA20343

Carbamazepine, Impurities

Iminostilbene-10,11-dihydrodiol

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CAS No.

: 56211-73-5

Mol F.

: C14H13NO2

Mol W.

: 227.26

Cat No.

: SA20341

Impurities, Oxcarbazepine

Iminostilbene-10,11-dihydrodiol

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CAS No.

: 56211-73-5

Mol F.

: C₁₄H₁₃NO₂

Mol W.

: 227.26

Cat No.

: SA12517

Impurities, Indacaterol

Indacaterol

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CAS No.

: 312753-06-3; 1000160-96-2 (acetate salt) ; 753498-25-8 (Maleate salt)

Mol F.

: C24H28N2O3

Mol W.

: 392.5

Cat No.

: SA48700

Impurities, Indacaterol

Indacaterol 1-Hydroxyethyl

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CAS No.

: 1446354-19-3

Mol F.

: C24H28N2O4

Mol W.

: 408.49

Cat No.

: SA48703

Impurities, Indacaterol

Indacaterol 5,6-Diethyl Octahydro Iindenamine HCl Impurity

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CAS No.

: NA

Mol F.

: C13H26ClN

Mol W.

: 231.81

Cat No.

: SA48713

Impurities, Indacaterol

Indacaterol Impurity A

$300.00 25 mg

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CAS No.

: 773895-24-2

Mol F.

: C31H34N2O3

Mol W.

: 482.61

Cat No.

: SA48701

Impurities, Indacaterol

Indacaterol Impurity B

$300.00 25 mg

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CAS No.

: 1207760-24-4

Mol F.

: C49H49N3O6

Mol W.

: 775.95

Cat No.

: SA48702

Impurities, Indacaterol, Nitrosamine

Indacaterol Nitroso Impurity

$250.00 25 mg

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CAS No.

Mol F.

: C24H27N3O4

Mol W.

: 421.5

Cat No.

: SA48710

Impurities, Iohexol

Iohexol

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CAS No.

: 66108-95-0

Mol F.

: C19H26I3N3O9

Mol W.

: 821.14

Cat No.

: SA31500

Impurities, Iohexol

Iohexol EP Impurity A

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CAS No.

: 31127-80-7

Mol F.

: C16H20I3N3O7

Mol W.

: 747.06

Cat No.

: SA31501

Impurities, Iohexol

Iohexol EP Impurity B

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CAS No.

: 2732209-64-0

Mol F.

: C22H32I3N3O11

Mol W.

: 895.22

Cat No.

: SA31502

Impurities, Iohexol

Iohexol EP Impurity C

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CAS No.

: 2724765-15-3

Mol F.

: C22H32I3N3O11

Mol W.

: 895.22

Cat No.

: SA31503

Impurities, Iohexol

Iohexol EP Impurity D

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CAS No.

: 2731968-49-1

Mol F.

: C22H32I3N3O11

Mol W.

: 895.22

Cat No.

: SA31504

Impurities, Iohexol

Iohexol EP Impurity E

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CAS No.

: 2727061-52-9

Mol F.

: C22H32I3N3O11

Mol W.

: 895.22

Cat No.

: SA31505

Impurities, Iohexol

Iohexol EP Impurity F

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CAS No.

: 1215856-35-1

Mol F.

: C14H19I2N3O6

Mol W.

: 579.12

Cat No.

: SA31506

Impurities, Iohexol

Iohexol EP Impurity G

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CAS No.

: NA

Mol F.

: C16H21I2N3O7

Mol W.

: 621.16

Cat No.

: SA31507

Impurities, Iohexol

Iohexol EP Impurity H

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CAS No.

: 1651211-78-7

Mol F.

: C19H27I2N3O9

Mol W.

: 695.24

Cat No.

: SA31508

Impurities, Iohexol

Iohexol EP Impurity I

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CAS No.

: 196309-19-0

Mol F.

: C17H23I2N3O8

Mol W.

: 651.19

Cat No.

: SA31509

Impurities, Iohexol

Iohexol EP Impurity J

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CAS No.

: 76801-93-9

Mol F.

: C14H18I3N3O6

Mol W.

: 705.02

Cat No.

: SA31510

Impurities, Iohexol

Iohexol EP Impurity K

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CAS No.

: 35453-19-1

Mol F.

: C8H4I3NO4

Mol W.

: 558.84

Cat No.

: SA31511

Impurities, Iohexol

Iohexol EP Impurity L

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CAS No.

: 37441-29-5

Mol F.

: C8H2Cl2I3NO2

Mol W.

: 595.73

Cat No.

: SA31512

Impurities, Iohexol

Iohexol EP Impurity M

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CAS No.

: NA

Mol F.

: C17H25I2N3O8

Mol W.

: 653.2

Cat No.

: SA31513

Impurities, Iohexol

Iohexol EP Impurity N

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CAS No.

: 2730989-02-1

Mol F.

: C21H28I3N3O10

Mol W.

: 863.17

Cat No.

: SA31514

Impurities, Iohexol

Iohexol EP Impurity O

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CAS No.

: 2725999-26-6

Mol F.

: C21H28I3N3O10

Mol W.

: 863.17

Cat No.

: SA31515

Impurities, Iohexol

Iohexol EP Impurity P

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CAS No.

: NA

Mol F.

: C21H28I3N3O10

Mol W.

: 863.17

Cat No.

: SA31516

Impurities, Iohexol

Iohexol EP Impurity Q

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CAS No.

: NA

Mol F.

: C21H28I3N3O10

Mol W.

: 863.17

Cat No.

: SA31517

Impurities, Iohexol

Iohexol USP Related Compound C

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CAS No.

: 76820-34-3

Mol F.

: C14H16I3N3O8

Mol W.

: 735.01

Cat No.

: SA31518

Impurities, Ipratropium Bromide

Ipratropium Bromide

$100.00 25 mg

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CAS No.

: 60205-81-4 (Anhydrous); 66985-17-9

Mol F.

: C20H30BrNO3

Mol W.

: 412.36

Cat No.

: SA36000

Impurities, Iptacopan

Iptacopan | CAS : 1644670-37-0

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CAS No.

: 1644670-37-0

Mol F.

: C25H30N2O4

Mol W.

: 422.53

Cat No.

: SA52900

Impurities, Iptacopan

Iptacopan RS Isomer

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CAS No.

: NA

Mol F.

: C25H30N2O4

Mol W.

: 422.53

Cat No.

: SA52903

Impurities, Iptacopan

Iptacopan-RR Isomer

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CAS No.

: 1644670-39-2

Mol F.

: C25H30N2O4

Mol W.

: 422.53

Cat No.

: SA52901

Impurities, Iptacopan

Iptacopan-SR Isomer

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CAS No.

: 3057514-75-4

Mol F.

: C25H30N2O4

Mol W.

: 422.53

Cat No.

: SA52902

Impurities, Irbesartan

Irbesartan

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CAS No.

: 138402-11-6

Mol F.

: C25H28N6O

Mol W.

: 428.53

Cat No.

: SA23304

Impurities, Irbesartan

Irbesartan Bromo N2-Trityl Impurity

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CAS No.

: 133051-88-4

Mol F.

: C33H25BrN4

Mol W.

: 557.48

Cat No.

: SA23302

Impurities, Irbesartan

Irbesartan Bromo Nitrile Impurity

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CAS No.

: 114772-54-2

Mol F.

: C14H10BrN

Mol W.

: 272.14

Cat No.

: SA23303

Impurities, Irbesartan

Irbesartan Cyano Dimer Impurity

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CAS No.

: NA

Mol F.

: C39H36N4O

Mol W.

: 576.73

Cat No.

: SA23316

Impurities, Irbesartan

Irbesartan Dibromomethyl Impurity

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CAS No.

: 209911-63-7

Mol F.

: C14H9Br2N

Mol W.

: 351.04

Cat No.

: SA23305

Impurities, Irbesartan

Irbesartan Dimer Impurity

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CAS No.

: 1346598-52-4

Mol F.

: C39H38N10O

Mol W.

: 662.79

Cat No.

: SA23312

Impurities, Irbesartan

Irbesartan EP Impurity A

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CAS No.

: 748812-53-5

Mol F.

: C25H30N6O2

Mol W.

: 446.54

Cat No.

: SA23306

Impurities, Irbesartan

Irbesartan Methyl Impurity

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CAS No.

: 120568-11-8

Mol F.

: C14H12N4

Mol W.

: 236.27

Cat No.

: SA23309

Impurities, Irbesartan

Irbesartan N2-Trityl Impurity

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CAS No.

: 886999-35-5

Mol F.

: C44H42N6O

Mol W.

: 670.84

Cat No.

: SA23310

Impurities, Irbesartan

Irbesartan Propyl Analog

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CAS No.

: 158778-58-6

Mol F.

: C24H26N6O

Mol W.

: 414.5

Cat No.

: SA23311

Impurities, Isavuconazole

Isavuconazole hydroxy methyl impurity

$1,200.00 25 mg

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CAS No.

: 2761502-58-1

Mol F.

: C32H30F2N7O4S

Mol W.

: 682.14/646.20 (Free base)

Cat No.

: SA44104

Impurities, Isavuconazole

Isavuconazole Methyl ester Impurity

$1,050.00 25 mg

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CAS No.

Mol F.

: C41H46ClF2N7O9S

Mol W.

: 886.36

Cat No.

: SA44115

Impurities, Olmesartan Medoxomil

Iso Butylimidazole Imtermediate

Please enquire for price & pack size

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CAS No.

: 1346598-38-6

Mol F.

: C13H22N2O3

Mol W.

: 254.33

Cat No.

: SA17738

Ganciclovir, Impurities

Iso Ganciclovir

Please enquire for price & pack size

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CAS No.

: 86357-09-7

Mol F.

: C₉H₁₃N₅O₄

Mol W.

: 255.23

Cat No.

: SA13708

Impurities, Loratadine

Iso Loratadine A

Please enquire for price & pack size

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CAS No.

: 169253-13-8

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34035