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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, Simvastatin

Simvastatin EP Impurity C

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Out of Stock

CAS No.

: 210980-68-0

Mol F.

: C25H36O4

Mol W.

: 400.55

Cat No.

: SA32403

Impurities, Simvastatin

Simvastatin EP Impurity D

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Out of Stock

CAS No.

: 476305-24-5

Mol F.

: C50H76O10

Mol W.

: 837.13

Cat No.

: SA32404

Impurities, Simvastatin

Simvastatin EP Impurity E

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Out of Stock

CAS No.

: 75330-75-5

Mol F.

: C24H36O5

Mol W.

: 404.54

Cat No.

: SA32405

Impurities, Simvastatin

Simvastatin EP Impurity F

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Out of Stock

CAS No.

: 79952-44-6

Mol F.

: C24H36O5

Mol W.

: 404.54

Cat No.

: SA32406

Impurities, Simvastatin

Simvastatin EP Impurity G

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Out of Stock

CAS No.

: 1449248-72-9

Mol F.

: C25H36O5

Mol W.

: 416.55

Cat No.

: SA32407

Impurities, Simvastatin

Simvastatin EP Impurity H

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Out of Stock

CAS No.

: 79952-42-4

Mol F.

: C19H28O4

Mol W.

: 320.42

Cat No.

: SA32408

Impurities, Simvastatin

Simvastatin EP Impurity I

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Out of Stock

CAS No.

: 79902-42-4

Mol F.

: C23H34O5

Mol W.

: 390.51

Cat No.

: SA32409

Impurities, Simvastatin

Simvastatin EP Impurity J

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Out of Stock

CAS No.

: 864357-88-0

Mol F.

: C26H40O5

Mol W.

: 432.59

Cat No.

: SA32410

Impurities, Simvastatin

Simvastatin EP Impurity K

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Out of Stock

CAS No.

: NA

Mol F.

: C25H40O5

Mol W.

: 420.58

Cat No.

: SA32411

Impurities, Simvastatin

Simvastatin EP Impurity M

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Out of Stock

CAS No.

: 864357-87-9

Mol F.

: C27H44O6

Mol W.

: 464.63

Cat No.

: SA32412

Impurities, Simvastatin

Simvastatin EP Impurity N

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Out of Stock

CAS No.

: 774611-54-0

Mol F.

: C26H40O5

Mol W.

: 432.59

Cat No.

: SA32413

Impurities, Sitagliptin

Sitagliptin

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Out of Stock

CAS No.

: 486460-32-6

Mol F.

: C16H15F6N5O

Mol W.

: 407.31

Cat No.

: SA10409

Impurities, Sitagliptin

Sitagliptin Desfluorobenzene Analog

$395.00 25 mg

Out of Stock

CAS No.

Mol F.

: C16H18F3N5O

Mol W.

: 353.34

Cat No.

: SA10413

Impurities, Sitagliptin

Sitagliptin Impurity 28 (HCl salt)

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Out of Stock

CAS No.

: 1909337-07-0

Mol F.

: C10H11ClF3NO2

Mol W.

: 269.65

Cat No.

: SA10456

Impurities, Sitagliptin

Sitagliptin N-Sulfate Sodium Salt

$795.00 25 mg

Out of Stock

CAS No.

: 940002-57-3(acid)

Mol F.

: C16H14F6N5NaO4S

Mol W.

: 509.36

Cat No.

: SA10426

Impurities, Sitagliptin

Sitagliptin Racemate

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Out of Stock

CAS No.

: 823817-56-7

Mol F.

: C16H15F6N5O

Mol W.

: 407.31

Cat No.

: SA10453

Impurities, Sofosbuvir

Soforbuvir (2R,3R,4R,5S) tetrahydrofuranyl Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C22H29FN3O9P

Mol W.

: 529.45

Cat No.

: SA15446

Impurities, Sofosbuvir

Sofosbuvir

$95.00 25 mg

Out of Stock

CAS No.

: 1190307-88-0

Mol F.

: C22H29FN3O9P

Mol W.

: 529.46

Cat No.

: SA15401

Impurities, Sofosbuvir

Sofosbuvir 3,5 Di-O-benzoyl Nucleoside Derivative | CAS : 863329-65-1

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Out of Stock

CAS No.

: 863329-65-1

Mol F.

: C24H21FN2O7

Mol W.

: 468.43

Cat No.

: SA15447

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15412; Sofosbuvir Impurity 3; Sofosbuvir Benzamido Impurity

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Out of Stock

CAS No.

: 863329-62-8

Mol F.

: C31H27N3O8

Mol W.

: 569.56

Cat No.

: SA15412

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15414

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Out of Stock

CAS No.

Mol F.

: C24H21FN2O7

Mol W.

: 468.43

Cat No.

: SA15414

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15415

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Out of Stock

CAS No.

Mol F.

: C24H22N2O8

Mol W.

: 466.44

Cat No.

: SA15415

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15416

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Out of Stock

CAS No.

: 1910099-17-0

Mol F.

: C24H20N2O7

Mol W.

: 448.42

Cat No.

: SA15416

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15417

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Out of Stock

CAS No.

: 1987950-05-9

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15417

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15418; 1-β-D-Arabinofuranosyluracil-2-C-methyl

Please enquire for price & pack size

Out of Stock

CAS No.

: 114262-49-6

Mol F.

: C10H14N2O6

Mol W.

: 258.23

Cat No.

: SA15418

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15419

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Out of Stock

CAS No.

: 119410-95-6

Mol F.

: C10H12N2O5

Mol W.

: 240.21

Cat No.

: SA15419

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15421; Sofosbuvir Carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C19H24FN3O9P

Mol W.

: 488.12

Cat No.

: SA15421

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15422

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Out of Stock

CAS No.

: 2041584-99-8

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15422

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15423

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Out of Stock

CAS No.

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15423

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15424

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Out of Stock

CAS No.

: 1987950-05-9

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15424

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15425

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Out of Stock

CAS No.

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15425

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15426

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Out of Stock

CAS No.

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15426

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15427

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Out of Stock

CAS No.

Mol F.

: C10H13FN2O5

Mol W.

: 260.22

Cat No.

: SA15427

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15429

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Out of Stock

CAS No.

: 1496551-65-5

Mol F.

: C20H17ClO6

Mol W.

: 388.8

Cat No.

: SA15429

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15430

$595.00 25 mg

Out of Stock

CAS No.

: 1015073-43-4

Mol F.

: C10H14N2O8P

Mol W.

: 340.2

Cat No.

: SA15430

Impurities, Sofosbuvir

Sofosbuvir Impurity SA15436

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Out of Stock

CAS No.

Mol F.

: C17H19N3O6

Mol W.

: 361.35

Cat No.

: SA15436

Impurities, Solifenacin

Solifenacin

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Out of Stock

CAS No.

: 180468-39-7

Mol F.

: C23H27ClN2O2

Mol W.

: 398.93

Cat No.

: SA32600

Impurities, Solifenacin

Solifenacin (S)-Hydroxyquinuclidine Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 34583-34-1

Mol F.

: C7H13NO

Mol W.

: 127.18

Cat No.

: SA32617

Impurities, Solifenacin

Solifenacin Benzoyl (R)-Quinuclidinyl Impurity

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Out of Stock

CAS No.

: 1956436-64-8

Mol F.

: C23H26N2O3

Mol W.

: 378.46

Cat No.

: SA32618

Impurities, Solifenacin

Solifenacin Benzoyl (S)-Quinuclidinyl Impurity

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Out of Stock

CAS No.

Mol F.

: C23H26N2O3

Mol W.

: 378.46

Cat No.

: SA32619

Impurities, Solifenacin

Solifenacin cis-Hydroxy Impurity

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Out of Stock

CAS No.

: 201660-36-8

Mol F.

: C23H26N2O3

Mol W.

: 378.46

Cat No.

: SA32613

Impurities, Solifenacin

Solifenacin EP Impurity A

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Out of Stock

CAS No.

: 118864-75-8

Mol F.

: C15H15N

Mol W.

: 209.29

Cat No.

: SA32601

Impurities, Solifenacin

Solifenacin EP Impurity B

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Out of Stock

CAS No.

: 1353274-25-5

Mol F.

: C19H21NO2

Mol W.

: 295.38

Cat No.

: SA32602

Impurities, Solifenacin

Solifenacin EP Impurity C

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Out of Stock

CAS No.

: 1534326-81-2

Mol F.

: C31H28N2O

Mol W.

: 444.57

Cat No.

: SA32603

Impurities, Solifenacin

Solifenacin EP Impurity D

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Out of Stock

CAS No.

: 2216750-52-4

Mol F.

: C31H28N2O

Mol W.

: 444.57

Cat No.

: SA32604

Impurities, Solifenacin

Solifenacin EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 25333-42-0

Mol F.

: C7H13NO

Mol W.

: 127.18

Cat No.

: SA32605

Impurities, Solifenacin

Solifenacin EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 180468-40-0

Mol F.

: C23H27ClN2O2

Mol W.

: 398.93

Cat No.

: SA32606

Impurities, Solifenacin

Solifenacin EP Impurity G

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Out of Stock

CAS No.

: 740780-79-4;862207-70-3

Mol F.

: C23H26N2O2

Mol W.

: 362.46

Cat No.

: SA32607

Impurities, Solifenacin

Solifenacin EP Impurity H

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Out of Stock

CAS No.

: 180468-38-6

Mol F.

: C23H27ClN2O2

Mol W.

: 398.93

Cat No.

: SA32608

Impurities, Solifenacin

Solifenacin EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: 180272-28-0

Mol F.

: C23H26N2O3

Mol W.

: 378.46

Cat No.

: SA32609