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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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Anastrozole, Impurities

Anastrozole EP Impurity A

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CAS No.

: 1215780-15-6

Mol F.

: C16H17N5

Mol W.

: 279.34

Cat No.

: SA40703

Anastrozole, Impurities

Anastrozole EP Impurity B

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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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CAS No.

: 120511-84-4

Mol F.

: C15H17BrN2

Mol W.

: 305.21

Cat No.

: SA40705

Anastrozole, Impurities

Anastrozole EP Impurity D

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CAS No.

: 1027160-12-8

Mol F.

: C15H16Br2N2

Mol W.

: 384.11

Cat No.

: SA40706

Anastrozole, Impurities

Anastrozole EP Impurity E

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CAS No.

: 120511-88-8

Mol F.

: C15H18N2O

Mol W.

: 242.32

Cat No.

: SA40707

Anastrozole, Impurities

Anastrozole EP Impurity F

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CAS No.

: 6192-52-5

Mol F.

: C7H10O4S

Mol W.

: 190.22

Cat No.

: SA40708

Anastrozole, Impurities

Anastrozole EP Impurity G

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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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CAS No.

: 120511-72-0

Mol F.

: C15H18N2

Mol W.

: 226.32

Cat No.

: SA40716

Anastrozole, Impurities

Anastrozole EP Impurity I

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CAS No.

: 120511-91-3

Mol F.

: C15H17ClN2

Mol W.

: 260.76

Cat No.

: SA40710

Anastrozole, Impurities

Anastrozole Formyl Impurity

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CAS No.

: 120511-89-9

Mol F.

: C15H16N2O

Mol W.

: 240.3

Cat No.

: SA40711

Anastrozole, Impurities

Anastrozole Monoacid Mononitrile

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CAS No.

: 1338800-82-0

Mol F.

: C17H20N4O2

Mol W.

: 312.37

Cat No.

: SA40717

Anastrozole, Impurities

Anastrozole Monoamide Nitrile

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CAS No.

: 120512-03-0

Mol F.

: C17H21N5O

Mol W.

: 311.38

Cat No.

: SA40701

Exemestane, Impurities

Androstane-3,6,17-triol

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CAS No.

: 49644-04-4

Mol F.

: C19H32O3

Mol W.

: 308.46

Cat No.

: SA19134

Exemestane, Impurities

Androstane-3,6,17-trione

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CAS No.

: 26991-58-2

Mol F.

: C19H26O3

Mol W.

: 302.41

Cat No.

: SA19137

Exemestane, Impurities

Androstenediol

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CAS No.

: 521-17-5

Mol F.

: C19H30O2

Mol W.

: 290.44

Cat No.

: SA19133

Apalutamide, Impurities

Apalutamide

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CAS No.

: 956104-40-8

Mol F.

: C21H15F4N5O2S

Mol W.

: 477.4

Cat No.

: SA55800

Apalutamide, Impurities

Apalutamide 6,8-Dioxo Impurity

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CAS No.

: 1332391-92-0

Mol F.

: C21H15F4N5O3

Mol W.

: 461.4

Cat No.

: SA55814

Apalutamide, Impurities

Apalutamide Benzoic Acid Impurity

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CAS No.

: 1332391-04-4

Mol F.

: C20H12F4N4O3S

Mol W.

: 464.4

Cat No.

: SA55807

Apalutamide, Impurities

Apalutamide Benzylamine Impurity

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CAS No.

: 915087-26-2

Mol F.

: C13H14FN3O

Mol W.

: 247.3

Cat No.

: SA55815

Apalutamide, Impurities

Apalutamide Cyclobutanecarboxylic Acid Impurity

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CAS No.

: 2227589-22-0

Mol F.

: C13H15FN2O3

Mol W.

: 266.3

Cat No.

: SA55816

Apalutamide, Impurities

Apalutamide Depyridinyl Phenyl Analog

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CAS No.

: 915087-27-3

Mol F.

: C22H16F4N4O2S

Mol W.

: 476.4

Cat No.

: SA55812

Apalutamide, Impurities

Apalutamide Desfluoro Impurity

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CAS No.

: 1332389-57-7

Mol F.

: C21H16F3N5O2S

Mol W.

: 459.4

Cat No.

: SA55805

Apalutamide, Impurities

Apalutamide Desmethyl Impurity

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CAS No.

: 1332391-11-3

Mol F.

: C20H13F4N5O2S

Mol W.

: 463.4

Cat No.

: SA55804

Apalutamide, Impurities

Apalutamide Dithiocarbonyl Impurity

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CAS No.

: 2649802-40-2

Mol F.

: C21H15F4N5OS2

Mol W.

: 493.5

Cat No.

: SA55801

Apalutamide, Impurities

Apalutamide N-2-methoxyethyl Impurity

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CAS No.

: 1332391-30-6

Mol F.

: C24H21F4N5O3S

Mol W.

: 535.5

Cat No.

: SA55806

Apalutamide, Impurities

Apalutamide N-Formyl Impurity

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CAS No.

: NA

Mol F.

: C21H17F4N5O3

Mol W.

: 463.4

Cat No.

: SA55809

Apalutamide, Impurities

Apalutamide N-Oxide Impurity

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CAS No.

: NA

Mol F.

: C21H15F4N5O3S

Mol W.

: 493.4

Cat No.

: SA55810

Apalutamide, Impurities

Apalutamide Picolinamide Impurity

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CAS No.

: NA

Mol F.

: C21H17F4N5O3S

Mol W.

: 495.5

Cat No.

: SA55802

Apalutamide, Impurities

Apalutamide Picolinonitrile Impurity

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CAS No.

: 573762-62-6

Mol F.

: C7H4F3N3

Mol W.

: 187.1

Cat No.

: SA55808

Apalutamide, Impurities

Apalutamide Thioamide Impurity

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CAS No.

: 2422147-84-8

Mol F.

: C8H5F3N4S

Mol W.

: 246.2

Cat No.

: SA55803

Apalutamide, Impurities

Apalutamide Urea Impurity

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CAS No.

: NA

Mol F.

: C8H5F3N4O

Mol W.

: 230.2

Cat No.

: SA55817

Apixaban, Impurities

Apixaban 4-Nitrophenyl Impurity | CAS : 503615-03-0

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CAS No.

: 503615-03-0

Mol F.

: C15H17N3O4

Mol W.

: 303.31

Cat No.

: SA39973

Apixaban, Impurities

Apixaban Carboxylic Acid O-Desmethyl Impurity

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CAS No.

: NA

Mol F.

: C24H22N4O5

Mol W.

: 446.46

Cat No.

: SA39908

Apixaban, Impurities

Apixaban Dimer Impurity

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CAS No.

Mol F.

: C34H30N8O6

Mol W.

: 646.65

Cat No.

: SA39931

Apixaban, Impurities

Apixaban Ethyl ester Dimer Impurity

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CAS No.

Mol F.

: C38H36N6O8

Mol W.

: 704.73

Cat No.

: SA39930

Apixaban, Impurities

Apixaban Hydroxy O-Desmethyl

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CAS No.

: 2204368-56-7

Mol F.

: C24H23N5O5

Mol W.

: 461.47

Cat No.

: SA39920

Apixaban, Impurities

Apixaban Impurity B

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CAS No.

: 1686149-74-5

Mol F.

: C26H27N5O4

Mol W.

: 473.52

Cat No.

: SA39936

Apixaban, Impurities

Apixaban Impurity E

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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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CAS No.

: 1686149-78-9

Mol F.

: C21H27N3O3

Mol W.

: 369.46

Cat No.

: SA39970

Apixaban, Impurities

Apixaban Intermediate 5-methyl-2-oxopyrrolidinyl Impurity

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CAS No.

Mol F.

: C20H25N3O3

Mol W.

: 355.43

Cat No.

: SA39969

Apixaban, Impurities

Apixaban meta methoxy Impurity

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CAS No.

: 1801881-18-4

Mol F.

: C25H25N5O4

Mol W.

: 459.51

Cat No.

: SA39961

Apixaban, Impurities

Apixaban Morpholino 4-nitrophenyl Impurity | CAS : 2818923-97-4

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CAS No.

: 2818923-97-4

Mol F.

: C15H15N3O4

Mol W.

: 301.30

Cat No.

: SA39975

Apixaban, Impurities

Apixaban Morpholino Ethyl Ester Impurity

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CAS No.

: 1619934-76-7

Mol F.

: C31H37N5O6

Mol W.

: 575.70

Cat No.

: SA39974

Apixaban, Impurities

Apixaban N-Oxide Dimer Impurity

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CAS No.

: 1998079-12-1

Mol F.

: C40H34N10O7

Mol W.

: 766.76

Cat No.

: SA39946

Apixaban, Impurities

Apixaban Nitrophenyl Hydroxyphenyl Ethyl Ester Impurity

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CAS No.

: NA

Mol F.

: C21H18N4O6

Mol W.

: 422.4

Cat No.

: SA39977

Apixaban, Impurities

Apixaban Nitrophenyl Piperidinone Impurity

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CAS No.

: 2512213-45-3

Mol F.

: C11H11ClN2O3

Mol W.

: 254.7

Cat No.

: SA39978

Apixaban, Impurities

Apixaban Nitrosamine impurity

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CAS No.

Mol F.

: C25H27N7O5

Mol W.

: 505.53

Cat No.

: SA39941

Apixaban, Impurities, Nitrosamine

Apixaban Nitroso Dicarboxylic Acid Impurity

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CAS No.

Mol F.

: C25H25N5O7

Mol W.

: 507.5

Cat No.

: SA39971

Apixaban, Impurities

Apixaban ortho methoxy Impurity

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CAS No.

: 1801881-16-2

Mol F.

: C25H25N5O4

Mol W.

: 459.51

Cat No.

: SA39962

Apixaban, Impurities

Apixaban Pyrazole-3,5-dicarboxamide Impurity

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CAS No.

: NA

Mol F.

: C25H28N6O4

Mol W.

: 476.53

Cat No.

: SA39976