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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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Impurities, Permethrin

Permethrin Chloroethynyl Carboxylic Acid Impurity

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CAS No.

: 63406-22-4

Mol F.

: C8H9ClO2

Mol W.

: 172.6

Cat No.

: SA51927

Impurities, Permethrin

Permethrin Dibenzyl Ester Impurity

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CAS No.

: NA

Mol F.

: C34H32O6

Mol W.

: 536.6

Cat No.

: SA51928

Impurities, Permethrin

Permethrin Dicarboxylic Acid Impurity

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CAS No.

: 453-74-7

Mol F.

: C8H12O4

Mol W.

: 172.2

Cat No.

: SA51920

Impurities, Permethrin

Permethrin Dichloroethyl Methyl Ester Impurity

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CAS No.

: 1026245-43-1

Mol F.

: C9H14Cl2O2

Mol W.

: 225.1

Cat No.

: SA51926

Impurities, Permethrin

Permethrin Diester Impurity

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CAS No.

: NA

Mol F.

: C23H24Cl4O4

Mol W.

: 506.3

Cat No.

: SA51914

Impurities, Permethrin

Permethrin EP Impurity A

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CAS No.

: 3586-14-9

Mol F.

: C13H12O

Mol W.

: 184.2

Cat No.

: SA51903

Impurities, Permethrin

Permethrin EP Impurity B

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CAS No.

: 61898-95-1

Mol F.

: C9H12Cl2O2

Mol W.

: 223.1

Cat No.

: SA51904

Impurities, Permethrin

Permethrin EP Impurity C

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CAS No.

: 13826-35-2

Mol F.

: C13H12O2

Mol W.

: 200.2

Cat No.

: SA51905

Impurities, Permethrin

Permethrin EP Impurity D

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CAS No.

: 39515-51-0

Mol F.

: C13H10O2

Mol W.

: 198.2

Cat No.

: SA51906

Impurities, Permethrin

Permethrin EP Impurity E

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CAS No.

: 53874-66-1

Mol F.

: C13H11ClO

Mol W.

: 218.7

Cat No.

: SA51907

Impurities, Permethrin

Permethrin EP Impurity F

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CAS No.

: 55701-05-8

Mol F.

: C8H10Cl2O2

Mol W.

: 209.1

Cat No.

: SA51908

Impurities, Permethrin

Permethrin EP Impurity G

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CAS No.

: 64964-54-1

Mol F.

: C21H19ClO3

Mol W.

: 354.8

Cat No.

: SA51909

Impurities, Permethrin

Permethrin EP Impurity H

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CAS No.

: 56860-12-9

Mol F.

: C16H18Cl4O3

Mol W.

: 400.1

Cat No.

: SA51910

Impurities, Permethrin

Permethrin Ethyl Cyclopropanoate Impurity

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CAS No.

: 1220340-58-8

Mol F.

: C11H16Cl2O2

Mol W.

: 251.1

Cat No.

: SA51919

Impurities, Permethrin

Permethrin Ethyl Cyclopropanoate Impurity

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CAS No.

: 59609-49-3

Mol F.

: C10H14Cl2O2

Mol W.

: 237.1

Cat No.

: SA51917

Impurities, Permethrin

Permethrin Methyl 4-Phenoxybenzene Impurity

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CAS No.

: 1706-12-3

Mol F.

: C13H12O

Mol W.

: 184.2

Cat No.

: SA51923

Impurities, Permethrin

Permethrin Trichloroethyl Carboxylic Acid Impurity

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CAS No.

: 61976-24-7

Mol F.

: C8H11Cl3O2

Mol W.

: 245.5

Cat No.

: SA51922

Impurities, Permethrin

Permethrin Trichloroethyl Ethyl Ester Impurity

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CAS No.

: 60066-84-4

Mol F.

: C10H15Cl3O2

Mol W.

: 273.6

Cat No.

: SA51925

Impurities, Permethrin

Permethrin Trichloroethyl Impurity

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CAS No.

: 65462-81-9

Mol F.

: C21H21Cl3O3

Mol W.

: 427.7

Cat No.

: SA51918

Impurities, Permethrin

Permethrin Trichloroethyl Isopropyl Ester Impurity

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CAS No.

: NA

Mol F.

: C11H17Cl3O2

Mol W.

: 287.6

Cat No.

: SA51931

Impurities, Permethrin

Permethrin Trichloroethyl Methyl Ester Impurity

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CAS No.

: 63406-18-8

Mol F.

: C9H13Cl3O2

Mol W.

: 259.6

Cat No.

: SA51924

Impurities, Pioglitazone

Pioglitazone | CAS : 111025-46-8

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CAS No.

: 111025-46-8

Mol F.

: C19H20N2O3S

Mol W.

: 356.4

Cat No.

: SA52800

Impurities, Pioglitazone

Pioglitazone 1-Hydroxyethyl Impurity | CAS : 146062-44-4

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CAS No.

: 146062-44-4

Mol F.

: C19H20N2O4S

Mol W.

: 372.4

Cat No.

: SA52819

Pioglitazone

Pioglitazone 4-Hydroxybenzyl Impurity | 74772-78-4

$195.00 100 mg

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CAS No.

: 74772-78-4

Mol F.

: C10H9NO3S

Mol W.

: 223.2

Cat No.

: SA52822

Impurities, Pioglitazone

Pioglitazone 4-Hydroxybenzylidene Impurity

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CAS No.

: 103788-60-9

Mol F.

: C10H7NO3S

Mol W.

: 221.2

Cat No.

: SA52802

Impurities, Pioglitazone

Pioglitazone Amide Impurity | CAS : 1333112-55-2

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CAS No.

: 1333112-55-2

Mol F.

: C18H22N2O2

Mol W.

: 298.4

Cat No.

: SA52826

Impurities, Pioglitazone

Pioglitazone Aminophenoxy Impurity | CAS : 85583-40-0

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CAS No.

: 85583-40-0

Mol F.

: C15H18N2O

Mol W.

: 242.3

Cat No.

: SA52824

Impurities, Pioglitazone

Pioglitazone Benzaldehyde Intermediate Impurity

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CAS No.

: 114393-97-4

Mol F.

: C16H17NO2

Mol W.

: 255.3

Cat No.

: SA52804

Impurities, Pioglitazone

Pioglitazone Benzylalcohol Impurity | CAS : 144842-17-1

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CAS No.

: 144842-17-1

Mol F.

: C16H19NO2

Mol W.

: 257.3

Cat No.

: SA52827

Impurities, Pioglitazone

Pioglitazone Carboxylmethyl Derivative | CAS : 146062-48-8

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CAS No.

: 146062-48-8

Mol F.

: C19H18N2O5S

Mol W.

: 386.4

Cat No.

: SA52821

Impurities, Pioglitazone

Pioglitazone Disulfide Dimer Impurity | CAS : 1229114-67-3

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CAS No.

: 1229114-67-3

Mol F.

: C36H40N2O6S2

Mol W.

: 660.8

Cat No.

: SA52815

Pioglitazone

Pioglitazone EP impurity A | CAS : 625853-74-9

$1,595.00 100 mg

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CAS No.

: 625853-74-9

Mol F.

: C19H20N2O4S

Mol W.

: 372.4

Cat No.

: SA52807

Pioglitazone

Pioglitazone EP impurity B | CAS : 136401-69-9

$555.00 1 g

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CAS No.

: 136401-69-9

Mol F.

: C19H18N2O3S

Mol W.

: 354.4

Cat No.

: SA52808

Pioglitazone

Pioglitazone EP impurity C | CAS : 952188-00-0

$995.00 100 mg

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CAS No.

: 952188-00-0

Mol F.

: C28H31N3O3S

Mol W.

: 489.6

Cat No.

: SA52809

Pioglitazone

Pioglitazone EP impurity D | CAS : 868754-41-0

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CAS No.

: 868754-41-0

Mol F.

: C21H26N2O4S

Mol W.

: 402.5

Cat No.

: SA52810

Pioglitazone

Pioglitazone EP impurity E | CAS : 868754-42-1

$995.00 1 g

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CAS No.

: 868754-42-1

Mol F.

: C20H25NO3

Mol W.

: 327.4

Cat No.

: SA52811

Pioglitazone

Pioglitazone EP Impurity F | CAS : 1391052-15-5

$1,555.00 100 mg

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CAS No.

: 1391052-15-5

Mol F.

: C20H16N2O5S2

Mol W.

: 428.4

Cat No.

: SA52812

Impurities, Pioglitazone

Pioglitazone EP Impurity G | CAS : 952187-99-4

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CAS No.

: 952187-99-4

Mol F.

: C34H35N3O4S

Mol W.

: 581.7

Cat No.

: SA52813

Impurities, Pioglitazone

Pioglitazone Hydroxy Benzaldehyde Impurity

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CAS No.

: 471295-98-4

Mol F.

: 271.3

Mol W.

: C16H17NO3

Cat No.

: SA52825

Impurities, Pioglitazone

Pioglitazone Hydroxy Impurity | CAS : 101931-00-4

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CAS No.

: 101931-00-4

Mol F.

: C19H20N2O4S

Mol W.

: 372.4

Cat No.

: SA52801

Impurities, Pioglitazone

Pioglitazone Imino Derivative | CAS : 105355-26-8

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CAS No.

: 105355-26-8

Mol F.

: C19H21N3O2S

Mol W.

: 355.4

Cat No.

: SA52803

Impurities, Pioglitazone

Pioglitazone Keto Impurity | CAS : 146062-45-5

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CAS No.

: 146062-45-5

Mol F.

: C19H20N2O4S

Mol W.

: 372.4

Cat No.

: SA52820

Pioglitazone

Pioglitazone N-Oxide | CAS : 145350-09-0

$455.00 100 mg

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CAS No.

: 145350-09-0

Mol F.

: C19H20N2O4S

Mol W.

: 372.4

Cat No.

: SA52818

Impurities, Pioglitazone

Pioglitazone Propanoic Acid Impurity | CAS : 1229114-66-2

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CAS No.

: 1229114-66-2

Mol F.

: C18H21NO3S

Mol W.

: 331.4

Cat No.

: SA52806

Impurities, Pioglitazone

Pioglitazone Related Compound B | CAS : 669716-56-7

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CAS No.

: 669716-56-7

Mol F.

: C34H35N3O4S

Mol W.

: 581.7

Cat No.

: SA52814

Impurities, Piperidine

Piperidine Hydrochloride

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CAS No.

: 6091-44-7

Mol F.

: C5H12ClN

Mol W.

: 121.61

Cat No.

: SA49300

Apixaban, Impurities

Piperidone Apixaban Impurity

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CAS No.

: 2098457-92-0

Mol F.

: C26H27N5O4

Mol W.

: 473.52

Cat No.

: SA39952

Bumetanide, Impurities

Piretanide

$350.00 25 mg

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CAS No.

: 55837-27-9

Mol F.

: C17H18N2O5S

Mol W.

: 362.4

Cat No.

: SA24409

Impurities, Pirfenidone

Pirfenidone

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CAS No.

: 53179-13-8

Mol F.

: C12H11NO

Mol W.

: 185.22

Cat No.

: SA37200

Impurities, Pirfenidone

Pirfenidone 5-Carboxylic Acid Impurity

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CAS No.

: 77837-08-2;1189982-99-7(NaSalt)

Mol F.

: C12H9NO3

Mol W.

: 215.2

Cat No.

: SA37705