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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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Amoxicillin, Impurities

Amoxicillin EP Impurity L

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Out of Stock

CAS No.

: 1789703-32-7

Mol F.

: C24H29N5O7S2

Mol W.

: 563.65

Cat No.

: SA15319

Amoxicillin, Impurities

Amoxicillin Trihydrate

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Out of Stock

CAS No.

: 61336-70-7

Mol F.

: C16H25N3O8S

Mol W.

: 419.5

Cat No.

: SA15301

Amoxicillin, Impurities

Amoxicillin Trimer Impurity

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Out of Stock

CAS No.

Mol F.

Mol W.

Cat No.

: SA15309

Amoxicillin, Impurities

Amoxicilloic acid-1 Impurity

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Out of Stock

CAS No.

Mol F.

Mol W.

Cat No.

: SA15302

Amoxicillin, Impurities

Amoxicilloic acid-2 Impurity

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Out of Stock

CAS No.

Mol F.

Mol W.

Cat No.

: SA15303

Amoxicillin, Impurities

Amoxilloic acid-1 Impurity

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Out of Stock

CAS No.

Mol F.

Mol W.

Cat No.

: SA15304

Amoxicillin, Impurities

Amoxilloic acid-2 Impurity

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Out of Stock

CAS No.

Mol F.

Mol W.

Cat No.

: SA15305

Anastrozole, Impurities

Anastrozole

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-73-1

Mol F.

: C17H19N5

Mol W.

: 293.37

Cat No.

: SA40700

Anastrozole, Impurities

Anastrozole 1,3-Dibromomethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 19294-04-3

Mol F.

: C9H10Br2

Mol W.

: 277.98

Cat No.

: SA40712

Anastrozole, Impurities

Anastrozole 1,3-Dicyanomethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-74-2

Mol F.

: CH€N‚

Mol W.

: 170.21

Cat No.

: SA40713

Anastrozole, Impurities

Anastrozole Amide Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H22N4O3

Mol W.

: 330.38

Cat No.

: SA40714

Anastrozole, Impurities

Anastrozole Diacid

Please enquire for price & pack size

Out of Stock

CAS No.

: 1338800-81-9

Mol F.

: C17H21N3O4

Mol W.

: 343.44

Cat No.

: SA40715

Anastrozole, Impurities

Anastrozole Diamide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 120512-04-1

Mol F.

: C17H23N5O2

Mol W.

: 329.4

Cat No.

: SA40702

Anastrozole, Impurities

Anastrozole EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 1215780-15-6

Mol F.

: C16H17N5

Mol W.

: 279.34

Cat No.

: SA40703

Anastrozole, Impurities

Anastrozole EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1216898-82-6

Mol F.

: C30H31N9

Mol W.

: 517.63

Cat No.

: SA40704

Anastrozole, Impurities

Anastrozole EP Impurity C

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Out of Stock

CAS No.

: 120511-84-4

Mol F.

: C15H17BrN2

Mol W.

: 305.21

Cat No.

: SA40705

Anastrozole, Impurities

Anastrozole EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 1027160-12-8

Mol F.

: C15H16Br2N2

Mol W.

: 384.11

Cat No.

: SA40706

Anastrozole, Impurities

Anastrozole EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-88-8

Mol F.

: C15H18N2O

Mol W.

: 242.32

Cat No.

: SA40707

Anastrozole, Impurities

Anastrozole EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 6192-52-5

Mol F.

: C7H10O4S

Mol W.

: 190.22

Cat No.

: SA40708

Anastrozole, Impurities

Anastrozole EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-92-4

Mol F.

: C17H19N5

Mol W.

: 293.37

Cat No.

: SA40709

Anastrozole, Impurities

Anastrozole EP Impurity H

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Out of Stock

CAS No.

: 120511-72-0

Mol F.

: C15H18N2

Mol W.

: 226.32

Cat No.

: SA40716

Anastrozole, Impurities

Anastrozole EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-91-3

Mol F.

: C15H17ClN2

Mol W.

: 260.76

Cat No.

: SA40710

Anastrozole, Impurities

Anastrozole Formyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 120511-89-9

Mol F.

: C15H16N2O

Mol W.

: 240.3

Cat No.

: SA40711

Anastrozole, Impurities

Anastrozole Monoamide Nitrile

Please enquire for price & pack size

Out of Stock

CAS No.

: 120512-03-0

Mol F.

: C17H21N5O

Mol W.

: 311.38

Cat No.

: SA40701

Exemestane, Impurities

Androstane-3,6,17-triol

Please enquire for price & pack size

Out of Stock

CAS No.

: 49644-04-4

Mol F.

: C19H32O3

Mol W.

: 308.46

Cat No.

: SA19134

Exemestane, Impurities

Androstane-3,6,17-trione

Please enquire for price & pack size

Out of Stock

CAS No.

: 26991-58-2

Mol F.

: C19H26O3

Mol W.

: 302.41

Cat No.

: SA19137

Exemestane, Impurities

Androstenediol

Please enquire for price & pack size

Out of Stock

CAS No.

: 521-17-5

Mol F.

: C19H30O2

Mol W.

: 290.44

Cat No.

: SA19133

Apixaban, Impurities

Apixaban Carboxylic Acid O-Desmethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C24H22N4O5

Mol W.

: 446.46

Cat No.

: SA39908

Apixaban, Impurities

Apixaban Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C34H30N8O6

Mol W.

: 646.65

Cat No.

: SA39931

Apixaban, Impurities

Apixaban Ethyl ester Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C38H36N6O8

Mol W.

: 704.73

Cat No.

: SA39930

Apixaban, Impurities

Apixaban Hydroxy O-Desmethyl

Please enquire for price & pack size

Out of Stock

CAS No.

: 2204368-56-7

Mol F.

: C24H23N5O5

Mol W.

: 461.47

Cat No.

: SA39920

Apixaban, Impurities

Apixaban Impurity 58

Please enquire for price & pack size

In Stock

CAS No.

: 881386-01-2

Mol F.

: C11H10Cl2N2O3

Mol W.

: 289.11

Cat No.

: SA39966

Apixaban, Impurities

Apixaban Impurity 59

Please enquire for price & pack size

In Stock

CAS No.

: 1039914-85-4

Mol F.

: C11H13ClN2O3

Mol W.

: 256.69

Cat No.

: SA39968

Apixaban, Impurities

Apixaban Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1686149-74-5

Mol F.

: C26H27N5O4

Mol W.

: 473.52

Cat No.

: SA39936

Apixaban, Impurities

Apixaban Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 1609409-53-1

Mol F.

: C20H22N2O6

Mol W.

: 386.4

Cat No.

: SA39928

Apixaban, Impurities

Apixaban Intermediate 5-methyl-2-oxopiperidinyl Impurity | CAS : 1686149-78-9

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Out of Stock

CAS No.

: 1686149-78-9

Mol F.

: C21H27N3O3

Mol W.

: 369.46

Cat No.

: SA39970

Apixaban, Impurities

Apixaban Intermediate 5-methyl-2-oxopyrrolidinyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C20H25N3O3

Mol W.

: 355.43

Cat No.

: SA39969

Apixaban, Impurities

Apixaban meta methoxy Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1801881-18-4

Mol F.

: C25H25N5O4

Mol W.

: 459.51

Cat No.

: SA39961

Apixaban, Impurities

Apixaban N-Oxide Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1998079-12-1

Mol F.

: C40H34N10O7

Mol W.

: 766.76

Cat No.

: SA39946

Apixaban, Impurities

Apixaban Nitrosamine impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C25H27N7O5

Mol W.

: 505.53

Cat No.

: SA39941

Apixaban, Impurities

Apixaban Nitroso Dicarboxylic Acid Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C25H25N5O7

Mol W.

: 507.5

Cat No.

: SA39971

Apixaban, Impurities

Apixaban ortho methoxy Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1801881-16-2

Mol F.

: C25H25N5O4

Mol W.

: 459.51

Cat No.

: SA39962

Apixaban, Impurities

Apixaban Related Compound 2

Please enquire for price & pack size

In Stock

CAS No.

: 536760-29-9

Mol F.

: C11H9ClN2O3

Mol W.

: 252.65

Cat No.

: SA39965

Apremilast, Impurities

Apremilast

Please enquire for price & pack size

Out of Stock

CAS No.

: 608141-41-9

Mol F.

: C22H24N2O7S

Mol W.

: 460.5

Cat No.

: SA30000

Apremilast, Impurities

Apremilast Diethoxy Analog

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C23H26N2O7S

Mol W.

: 474.53

Cat No.

: SA30024

Apremilast, Impurities

Apremilast dimethoxy analog | CAS: 1809089-51-7

Please enquire for price & pack size

Out of Stock

CAS No.

: 1809089-51-7

Mol F.

: C21H22N2O7S

Mol W.

: 446.48

Cat No.

: SA30022

Apremilast, Impurities

Apremilast EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 2487573-02-2

Mol F.

: C21H21NO7S

Mol W.

: 431.46

Cat No.

: SA30002

Apremilast, Impurities

Apremilast EP Impurity D

$795.00 25 mg

Out of Stock

CAS No.

: 2448678-64-4

Mol F.

: C23H26N2O7S

Mol W.

: 474.53

Cat No.

: SA30003

Apremilast, Impurities

Apremilast EP Impurity E

$795.00 25 mg

Out of Stock

CAS No.

: 2487573-03-3

Mol F.

: C22H24N2O7S

Mol W.

: 460.5

Cat No.

: SA30004

Apremilast, Impurities

Apremilast EP Impurity F

$595.00 25 mg

Out of Stock

CAS No.

Mol F.

: C20H24N2O7S

Mol W.

: 436.48

Cat No.

: SA30005