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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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Aspartame, Impurities

Aspartame EP Impurity A

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CAS No.

: 5262-02-10 00:00:00

Mol F.

: C13H14N2O4

Mol W.

: 262.3

Cat No.

: SA56301

Aspartame, Impurities

Aspartame EP Impurity B

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CAS No.

: 13433-09-5

Mol F.

: C13H16N2O5

Mol W.

: 280.3

Cat No.

: SA56302

Aspartame, Impurities

Aspartame EP Impurity C

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CAS No.

: 63-91-2

Mol F.

: C9H11NO2

Mol W.

: 165.2

Cat No.

: SA56303

Aspartame, Impurities

Aspartame USP Related Compound A

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CAS No.

: 55102-13-1

Mol F.

: C13H14N2O4

Mol W.

: 262.3

Cat No.

: SA56305

Aspirin, Impurities

Aspirin; Acetylsalicylic Acid

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CAS No.

: 50-78-2

Mol F.

: C9H8O4

Mol W.

: 180.16

Cat No.

: SA28505

Ataluren, Impurities

Ataluren

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CAS No.

: 775304-57-9

Mol F.

: C15H9FN2O3

Mol W.

: 284.2

Cat No.

: SA55600

Ataluren, Impurities

Ataluren 2-Hydroxyphenyl Impurity

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CAS No.

: NA

Mol F.

: C15H10N2O4

Mol W.

: 282.3

Cat No.

: SA55604

Ataluren, Impurities

Ataluren 2-Methoxyphenyl Impurity

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CAS No.

: 775304-03-5

Mol F.

: C16H12N2O4

Mol W.

: 296.3

Cat No.

: SA55601

Ataluren, Impurities

Ataluren 3-Fluorophenyl Impurity

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CAS No.

: 775304-56-8

Mol F.

: C15H9FN2O3

Mol W.

: 284.2

Cat No.

: SA55606

Ataluren, Impurities

Ataluren 5-Chloro Impurity

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CAS No.

: NA

Mol F.

: C15H8ClFN2O3

Mol W.

: 318.7

Cat No.

: SA55605

Ataluren, Impurities

Ataluren Dibenzoic acid Impurity

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CAS No.

: NA

Mol F.

: C16H10N2O5

Mol W.

: 310.3

Cat No.

: SA55607

Ataluren, Impurities

Ataluren Methyl Ester

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CAS No.

: 775304-60-4

Mol F.

: C16H11FN2O3

Mol W.

: 298.3

Cat No.

: SA55603

Ataluren, Impurities

Ataluren Trichlorobenzene Impurity

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CAS No.

: 27020-96-8

Mol F.

: C8H4Cl3N

Mol W.

: 220.5

Cat No.

: SA55602

Atazanavir, Impurities

Atazanavir

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CAS No.

: 198904-31-3

Mol F.

: C38H52N6O7

Mol W.

: 704.9

Cat No.

: SA56800

Atazanavir, Impurities

Atazanavir Amine Impurity

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CAS No.

: 1028634-76-5

Mol F.

: C36H50N6O5

Mol W.

: 646.8

Cat No.

: SA56812

Atazanavir, Impurities

Atazanavir EP Impurity A

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CAS No.

: 4385-62-0

Mol F.

: C12H9NO2

Mol W.

: 199.2

Cat No.

: SA56801

Atazanavir, Impurities

Atazanavir EP Impurity B

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CAS No.

: 127406-56-8

Mol F.

: C12H9NO

Mol W.

: 183.2

Cat No.

: SA56802

Atazanavir, Impurities

Atazanavir EP Impurity C

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CAS No.

: 1192224-24-0

Mol F.

: C26H43N5O7

Mol W.

: 537.7

Cat No.

: SA56803

Atazanavir, Impurities

Atazanavir EP Impurity D

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CAS No.

: NA

Mol F.

: C34H33N5O

Mol W.

: 527.7

Cat No.

: SA56804

Atazanavir, Impurities

Atazanavir EP Impurity E

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CAS No.

: 1292296-09-3

Mol F.

: C38H52N6O7

Mol W.

: 704.9

Cat No.

: SA56805

Atazanavir, Impurities

Atazanavir EP Impurity F

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CAS No.

: 1332981-14-2

Mol F.

: C38H52N6O7

Mol W.

: 704.9

Cat No.

: SA56806

Atazanavir, Impurities

Atazanavir EP Impurity G

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CAS No.

: 1332981-16-4

Mol F.

: C38H52N6O7

Mol W.

: 704.9

Cat No.

: SA56807

Atazanavir, Impurities

Atazanavir EP Impurity H

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CAS No.

: NA

Mol F.

: C38H52N6O7

Mol W.

: 704.9

Cat No.

: SA56808

Atazanavir, Impurities

Atazanavir EP Impurity I

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CAS No.

: NA

Mol F.

: C42H46N6O4

Mol W.

: 698.9

Cat No.

: SA56809

Atazanavir, Impurities

Atazanavir EP Impurity J

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CAS No.

: 198904-86-8

Mol F.

: C32H42N4O5

Mol W.

: 562.7

Cat No.

: SA56810

Atazanavir, Impurities

Atazanavir EP Impurity K

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CAS No.

: 162537-11-3

Mol F.

: C8H15NO4

Mol W.

: 189.2

Cat No.

: SA56811

Atazanavir, Impurities

Atazanavir N-Formyl Impurity

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CAS No.

: NA

Mol F.

: C37H50N6O6

Mol W.

: 674.8

Cat No.

: SA56814

Atenolol, Impurities

Atenolol

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CAS No.

: 29122-68-7

Mol F.

: C14H22N2O3

Mol W.

: 266.34

Cat No.

: SA33600

Atenolol, Impurities

Atenolol EP Impurity A

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CAS No.

: 17194-82-0

Mol F.

: C8H9NO2

Mol W.

: 151.16

Cat No.

: SA33601

Atenolol, Impurities

Atenolol Ep Impurity B

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CAS No.

: 61698-76-8

Mol F.

: C11H15NO4

Mol W.

: 225.24

Cat No.

: SA33602

Atenolol, Impurities

Atenolol EP Impurity C

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CAS No.

: 29122-69-8

Mol F.

: C11H13NO3

Mol W.

: 207.23

Cat No.

: SA33603

Atenolol, Impurities

Atenolol EP Impurity D

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CAS No.

: 115538-83-5

Mol F.

: C11H14ClNO3

Mol W.

: 243.69

Cat No.

: SA33604

Atenolol, Impurities

Atenolol EP Impurity E

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CAS No.

: 141650-31-9

Mol F.

: C19H22N2O5

Mol W.

: 358.39

Cat No.

: SA33605

Atenolol, Impurities

Atenolol EP Impurity F

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CAS No.

: 87619-83-8

Mol F.

: C25H35N3O6

Mol W.

: 473.56

Cat No.

: SA33606

Atenolol, Impurities

Atenolol EP Impurity G

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CAS No.

: 56392-14-4

Mol F.

: C14H21NO4

Mol W.

: 267.32

Cat No.

: SA33607

Atenolol, Impurities

Atenolol EP Impurity H

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CAS No.

: 29277-73-4

Mol F.

: C14H20N2O2

Mol W.

: 248.32

Cat No.

: SA33608

Atenolol, Impurities

Atenolol EP Impurity I

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CAS No.

: 1797116-92-7

Mol F.

: C13H20N2O3

Mol W.

: 252.31

Cat No.

: SA33609

Atenolol, Impurities

Atenolol EP Impurity J

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CAS No.

: 81346-71-6

Mol F.

: C11H16N2O3

Mol W.

: 224.3

Cat No.

: SA33610

Atomoxetine, Impurities

Atomoxetine 3-Fluoro Impurity Racemate

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CAS No.

: NA

Mol F.

: C17H21ClFNO

Mol W.

: 309.81

Cat No.

: SA22109

Atomoxetine, Impurities

Atomoxetine 4-Hydroxy Impurity

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CAS No.

: 435293-66-6

Mol F.

: C17H21NO2

Mol W.

: 271.35

Cat No.

: SA22110

Atomoxetine, Impurities

Atomoxetine Chloro Impurity

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CAS No.

: 114446-47-8

Mol F.

: C16H17ClO

Mol W.

: 260.76

Cat No.

: SA22111

Atomoxetine, Impurities

Atomoxetine EP Impurity A

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CAS No.

: 873310-33-9(HCl);56161-70-7(base)

Mol F.

: C16H20ClNO

Mol W.

: 277.79

Cat No.

: SA22101

Atomoxetine, Impurities

Atomoxetine EP Impurity B

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CAS No.

: 82857-39-4

Mol F.

: C17H22ClNO

Mol W.

: 291.82

Cat No.

: SA22102

Atomoxetine, Impurities

Atomoxetine EP Impurity C

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CAS No.

: 1643684-06-3

Mol F.

: C17H22ClNO

Mol W.

: 291.82

Cat No.

: SA22103

Atomoxetine, Impurities

Atomoxetine EP Impurity D

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CAS No.

: 873310-28-2

Mol F.

: C17H22ClNO

Mol W.

: 291.82

Cat No.

: SA22104

Atomoxetine, Impurities

Atomoxetine EP Impurity E

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CAS No.

: 17199-29-0

Mol F.

: C8H8O3

Mol W.

: 152.15

Cat No.

: SA22105

Atomoxetine, Impurities

Atomoxetine EP Impurity F

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CAS No.

: 1010818-92-4

Mol F.

: C17H21ClFNO

Mol W.

: 309.81

Cat No.

: SA22106

Atomoxetine, Impurities

Atomoxetine EP Impurity G

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CAS No.

: 2706536-33-4

Mol F.

: C27H34N2O2

Mol W.

: 418.57

Cat No.

: SA22107

Atomoxetine

Atomoxetine EP Impurity H

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CAS No.

: 42142-52-9

Mol F.

: C10H15NO

Mol W.

: 165.23

Cat No.

: SA22108

Atomoxetine, Impurities

Atomoxetine HCl

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CAS No.

: 82248-59-7

Mol F.

: C17H22ClNO

Mol W.

: 291.82

Cat No.

: SA22112