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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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Impurities, Palbociclib

Palbociclib Maleic Acid Adduct

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C28H31N7O5

Mol W.

: 545.6

Cat No.

: SA40443

Impurities, Palbociclib

Palbociclib N-Acetic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 2363160-84-1

Mol F.

: C22H24N6O4

Mol W.

: 505.57

Cat No.

: SA40402

Impurities, Palbociclib

Palbociclib N-Formyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2174002-16-3

Mol F.

: C25H29N7O3

Mol W.

: 475.54

Cat No.

: SA40401

Impurities, Palbociclib

Palbociclib Nitroso Piperazine Amine

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C9H13N5O

Mol W.

: 207.23

Cat No.

: SA40438

Impurities, Palbociclib

Palbociclib Sulfate Sodium Salt

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Out of Stock

CAS No.

: NA

Mol F.

: C24H28N7NaO5S

Mol W.

: 549.58

Cat No.

: SA40403

Impurities, Paliperidone

Paliperidone

Please enquire for price & pack size

Out of Stock

CAS No.

: 144598-75-4

Mol F.

: C23H27FN4O3

Mol W.

: 426.2

Cat No.

: SA49200

Impurities, Paliperidone

Paliperidone USP Related Compound A

Please enquire for price & pack size

Out of Stock

CAS No.

: 849903-79-3

Mol F.

: C11H16N2O2

Mol W.

: 208.3

Cat No.

: SA49201

Impurities, Paliperidone

Paliperidone USP Related Compound B

Please enquire for price & pack size

Out of Stock

CAS No.

: 84163-77-9

Mol F.

: C12H13FN2O

Mol W.

: 220.2

Cat No.

: SA49202

Impurities, Paliperidone

Paliperidone USP Related Compound C

Please enquire for price & pack size

Out of Stock

CAS No.

: 130049-82-0

Mol F.

: C11H15ClN2O2

Mol W.

: 242.7

Cat No.

: SA49203

Impurities, Paliperidone

Paliperidone USP Related Compound D

Please enquire for price & pack size

Out of Stock

CAS No.

: 761460-08-6

Mol F.

: C23H27FN4O4

Mol W.

: 442.5

Cat No.

: SA49204

Impurities, Paliperidone

Paliperidone Z-Oxime

Please enquire for price & pack size

Out of Stock

CAS No.

: 1388021-47-3

Mol F.

: C23H28F2N4O3

Mol W.

: 446.5

Cat No.

: SA49205

Fingolimod, Impurities

Palmitate Amide Fingolimod Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1242271-26-6

Mol F.

: C35H63NO3

Mol W.

: 545.88

Cat No.

: SA34519

Impurities, Nitrosamine

Palonosetron Hydrochloride nitrosamine impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C15H21N3O

Mol W.

: 259.35

Cat No.

: SA44609

Impurities, Pantoprazole

Pantoprazole

Please enquire for price & pack size

Out of Stock

CAS No.

: 102625-70-7

Mol F.

: C₁₆H₁₅F₂N₃O₄S

Mol W.

: 383.4

Cat No.

: SA29100

Impurities, Pantoprazole

Pantoprazole EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 127780-16-9

Mol F.

: C16H15F2N3O5S

Mol W.

: 399.37

Cat No.

: SA29101

Impurities, Pantoprazole

Pantoprazole EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 102625-64-9

Mol F.

: C16H15F2N3O3S

Mol W.

: 367.37

Cat No.

: SA29102

Impurities, Pantoprazole

Pantoprazole EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 97963-62-7

Mol F.

: C8H6F2N2OS

Mol W.

: 216.21

Cat No.

: SA29103

Impurities, Pantoprazole

Pantoprazole EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 624742-53-6

Mol F.

: C17H17F2N3O4S

Mol W.

: 397.4

Cat No.

: SA29104

Impurities, Pantoprazole

Pantoprazole N-Methyl 5-Difluoromethoxy Thiol Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C9H10N2OS

Mol W.

: 230.23

Cat No.

: SA29111

Impurities, Pantoprazole

Pantoprazole N-Methyl 6-Difluoromethoxy Thiol Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C9H10N2OS

Mol W.

: 230.23

Cat No.

: SA29112

Impurities, Pantoprazole

Pantoprazole N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 953787-60-5

Mol F.

: C16H15F2N3O5S

Mol W.

: 399.37

Cat No.

: SA29108

Impurities, Pantoprazole

Pantoprazole Sulfide N-Methyl 5-Difluoromethoxy Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H17F2N3O3S

Mol W.

: 381.4

Cat No.

: SA29109

Impurities, Pantoprazole

Pantoprazole Sulfide N-Methyl 6-Difluoromethoxy Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H17F2N3O3S

Mol W.

: 381.4

Cat No.

: SA29110

Impurities, Pantoprazole

Pantoprazole Sulfone N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 953787-55-8

Mol F.

: C16H15F2N3O6S

Mol W.

: 415.37

Cat No.

: SA29107

Impurities, Paroxetine

Paroxetine Dimer N-Methyl Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C41H44F2N2O6

Mol W.

: 698.79

Cat No.

: SA18313

Impurities, Paroxetine

Paroxetine Hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 78246-49-8

Mol F.

: C₁₉H₂₁ClFNO₃

Mol W.

: 365.83

Cat No.

: SA18314

Impurities, Paroxetine

Paroxetine Hydrochloride Anhydrous EP Impurity A

$550.00 25 mg

Out of Stock

CAS No.

: 1394842-91-1

Mol F.

: C19H21NO3

Mol W.

: 311.37

Cat No.

: SA18306

Impurities, Paroxetine

Paroxetine Hydrochloride Anhydrous EP Impurity B

$80.00 25 mg

Out of Stock

CAS No.

: 533-31-3

Mol F.

: C7H6O3

Mol W.

: 138.12

Cat No.

: SA18308

Impurities, Paroxetine

Paroxetine Hydrochloride Anhydrous EP Impurity F

$350.00 25 mg

Out of Stock

CAS No.

: 105813-39-6; 105813-40-9

Mol F.

: C26H27NO3

Mol W.

: 401.5

Cat No.

: SA18307

Impurities, Paroxetine

Paroxetine Hydrochloride Anhydrous EP Impurity J

$1,550.00 25 mg

Out of Stock

CAS No.

Mol F.

: C25H24FNO3

Mol W.

: 405.46

Cat No.

: SA18302

Impurities, Paroxetine

Paroxetine Hydrochloride Hemihydrate EP Impurity F

$1,550.00 25 mg

Out of Stock

CAS No.

: 606968-05-2

Mol F.

: C39H40F2N2O6

Mol W.

: 670.74

Cat No.

: SA18312

Impurities, Pazopanib

Pazopanib

Please enquire for price & pack size

Out of Stock

CAS No.

: 444731-52-6

Mol F.

: C21H23N7O2S

Mol W.

: 437.52

Cat No.

: SA51300

Impurities, Pazopanib

Pazopanib Chloro Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 444731-75-3

Mol F.

: C14H14ClN5

Mol W.

: 287.75

Cat No.

: SA51311

Impurities, Pazopanib

Pazopanib Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 2095544-42-4

Mol F.

: C42H43N13O4S2

Mol W.

: 858.01

Cat No.

: SA51304

Impurities, Pazopanib

Pazopanib Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1226499-98-4

Mol F.

: C22H22N8

Mol W.

: 398.5

Cat No.

: SA51308

Impurities, Pazopanib

Pazopanib Impurity 11

Please enquire for price & pack size

Out of Stock

CAS No.

: 1296888-47-5

Mol F.

: C15H17N5O

Mol W.

: 283.33

Cat No.

: SA51313

Impurities, Pazopanib

Pazopanib Impurity 17

Please enquire for price & pack size

Out of Stock

CAS No.

: 1821666-71-0

Mol F.

: C14H16N6

Mol W.

: 268.32

Cat No.

: SA51302

Impurities, Pazopanib

Pazopanib Impurity 19

Please enquire for price & pack size

Out of Stock

CAS No.

: 1821666-70-9

Mol F.

: C12H15N5O2S

Mol W.

: 293.3

Cat No.

: SA51303

Impurities, Pazopanib

Pazopanib Impurity 29

Please enquire for price & pack size

Out of Stock

CAS No.

: 1296888-46-4

Mol F.

: C16H20N6

Mol W.

: 296.4

Cat No.

: SA51305

Impurities, Pazopanib

Pazopanib Impurity 37

Please enquire for price & pack size

Out of Stock

CAS No.

: 1252927-45-9

Mol F.

: C14H14ClN5

Mol W.

: 287.75

Cat No.

: SA51301

Impurities, Pazopanib

Pazopanib Impurity 39

Please enquire for price & pack size

Out of Stock

CAS No.

: 1226499-97-3

Mol F.

: C13H12ClN5

Mol W.

: 273.7

Cat No.

: SA51307

Impurities, Pazopanib

Pazopanib impurity 8

Please enquire for price & pack size

Out of Stock

CAS No.

: 2795176-90-6

Mol F.

: C21H22N6O3S

Mol W.

: 438.51

Cat No.

: SA51309

Impurities, Pazopanib

Pazopanib N-oxide (RRT-0.70)

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C21H23N7O3S

Mol W.

: 453.52

Cat No.

: SA51310

Impurities, Pazopanib

Pazopanib Pyrimidine Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 444731-74-2

Mol F.

: C13H12ClN5

Mol W.

: 273.7

Cat No.

: SA51306

Impurities, Pemetrexed

Pemetrexed

$80.00 25 mg

Out of Stock

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

Out of Stock

CAS No.

: 193281-05-9

Mol F.

: C19H21N5O7

Mol W.

: 431.4

Cat No.

: SA32313

Impurities, Pemetrexed

Pemetrexed 3-Oxo Dimethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C21H25N5O7

Mol W.

: 459.45

Cat No.

: SA32315

Impurities, Pemetrexed

Pemetrexed Acid

$90.00 25 mg

Out of Stock

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

Out of Stock

CAS No.

: 155405-80-4

Mol F.

: C16H16N4O3

Mol W.

: 312.32

Cat No.

: SA32307

Impurities, Pemetrexed

Pemetrexed Diethyl Ester

$150.00 25 mg

Out of Stock

CAS No.

: 146943-43-3

Mol F.

: C24H29N5O6

Mol W.

: 483.52

Cat No.

: SA32308