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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, Pazopanib

Pazopanib Impurity 39

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CAS No.

: 1226499-97-3

Mol F.

: C13H12ClN5

Mol W.

: 273.7

Cat No.

: SA51307

Impurities, Pazopanib

Pazopanib impurity 8

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CAS No.

: 2795176-90-6

Mol F.

: C21H22N6O3S

Mol W.

: 438.51

Cat No.

: SA51309

Impurities, Pazopanib

Pazopanib N-oxide (RRT-0.70)

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CAS No.

Mol F.

: C21H23N7O3S

Mol W.

: 453.52

Cat No.

: SA51310

Impurities, Pazopanib

Pazopanib Pyrimidine Impurity

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CAS No.

: 444731-74-2

Mol F.

: C13H12ClN5

Mol W.

: 273.7

Cat No.

: SA51306

Impurities, Pemetrexed

Pemetrexed

$80.00 25 mg

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CAS No.

: 137281-23-3

Mol F.

: C20H21N5O6

Mol W.

: 427.41

Cat No.

: SA32301

Impurities, Pemetrexed

Pemetrexed 3-Oxo Diacid Impurity

$950.00 25 mg

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CAS No.

: 193281-05-9

Mol F.

: C19H21N5O7

Mol W.

: 431.4

Cat No.

: SA32313

Impurities, Pemetrexed

Pemetrexed 3-Oxo Dimethyl Ester

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CAS No.

: NA

Mol F.

: C21H25N5O7

Mol W.

: 459.45

Cat No.

: SA32315

Impurities, Pemetrexed

Pemetrexed Acid

$90.00 25 mg

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CAS No.

: 137281-39-1

Mol F.

: C15H14N4O3

Mol W.

: 298.3

Cat No.

: SA32300

Impurities, Pemetrexed

Pemetrexed Acid Methyl Ester

$80.00 25 mg

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CAS No.

: 155405-80-4

Mol F.

: C16H16N4O3

Mol W.

: 312.32

Cat No.

: SA32307

Impurities, Pemetrexed

Pemetrexed Diethyl Ester

$150.00 25 mg

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CAS No.

: 146943-43-3

Mol F.

: C24H29N5O6

Mol W.

: 483.52

Cat No.

: SA32308

Impurities, Pemetrexed

Pemetrexed Dihydro 6-Oxo Acid Methyl Ester

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CAS No.

: 1320346-43-7

Mol F.

: C16H16N4O4

Mol W.

: 328.32

Cat No.

: SA32317

Impurities, Pemetrexed

Pemetrexed EP Impurity A

$250.00 25 mg

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CAS No.

: 869791-42-4

Mol F.

: C21H23N5O6

Mol W.

: 441.44

Cat No.

: SA32302

Impurities, Pemetrexed

Pemetrexed EP Impurity B

$1,550.00 25 mg

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CAS No.

: 1802552-04-0

Mol F.

: C40H40N10O13

Mol W.

: 868.8

Cat No.

: SA32303

Impurities, Pemetrexed

Pemetrexed EP Impurity C

$1,850.00 25 mg

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CAS No.

: 1802552-16-4

Mol F.

: C40H40N10O13

Mol W.

: 868.8

Cat No.

: SA32304

Impurities, Ruxolitinib

Pemetrexed Keto impurity

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CAS No.

: 193281-00-4

Mol F.

: C22H25N5O7

Mol W.

: 471.46

Cat No.

: SA43400

Impurities, Pemetrexed

Pemetrexed N-Methyl Dimethyl Ester

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CAS No.

: NA

Mol F.

: C23H27N5O6

Mol W.

: 469.49

Cat No.

: SA32310

Impurities, Pemetrexed

Pemetrexed R-Isomer Diethyl Ester

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CAS No.

: NA

Mol F.

: C24H29N5O6

Mol W.

: 483.52

Cat No.

: SA32311

Impurities, Pemetrexed

Pemetrexed R-Isomer Dimethyl Ester

$395.00 25 mg

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CAS No.

: 1391068-12-4

Mol F.

: C22H25N5O6

Mol W.

: 455.46

Cat No.

: SA32312

Impurities, Pemetrexed

Pemetrexed α-Dipeptide Impurity

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CAS No.

: 883553-87-5

Mol F.

: C25H28N6O9

Mol W.

: 556.53

Cat No.

: SA32321

Impurities, Sofosbuvir

Pentafluoro Sofosbuvir Impurity

$100.00 10 mg

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CAS No.

: 1337529-56-2

Mol F.

: C18H17F5NO5P

Mol W.

: 453.3

Cat No.

: SA15441

Impurities, Sofosbuvir

Pentafluoro Sofosbuvir Impurity (SP-Isomer) | CAS : 1334513-02-8

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CAS No.

: 1334513-02-8

Mol F.

: C18H17F5NO5P

Mol W.

: 453.30

Cat No.

: SA15445

Impurities, Remdesivir

Pentafluorophenol

$100.00 100 mg

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CAS No.

: 771-61-9

Mol F.

: C6HF5O

Mol W.

: 184.06

Cat No.

: SA42731

Impurities, Permethrin

Permethrin 2-Phenoxy Benzyl Alcohol Impurity

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CAS No.

: 13807-84-6

Mol F.

: C13H12O2

Mol W.

: 200.2

Cat No.

: SA51921

Impurities, Permethrin

Permethrin 2-Phenoxybenzyl Ester Impurity

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CAS No.

: NA

Mol F.

: C21H20Cl2O3

Mol W.

: 391.3

Cat No.

: SA51916

Impurities, Permethrin

Permethrin 4-Phenoxy Benzyl Alcohol Impurity

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CAS No.

: 2215-78-3

Mol F.

: C13H12O2

Mol W.

: 200.2

Cat No.

: SA51915

Impurities, Permethrin

Permethrin 4-Phenoxybenzyl Ester Impurity

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CAS No.

: NA

Mol F.

: C21H20Cl2O3

Mol W.

: 391.3

Cat No.

: SA51929

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

Impurities, Pioglitazone

Pioglitazone 4-Hydroxybenzyl Impurity | 74772-78-4

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CAS No.

: 74772-78-4

Mol F.

: C10H9NO3S

Mol W.

: 223.2

Cat No.

: SA52822