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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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Impurities, Saxagliptin

Boc-3-hydroxy-1-adamantyl-D-glycine

$195.00 1 g

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CAS No.

: 361442-00-4

Mol F.

: C17H27NO5

Mol W.

: 325.46

Cat No.

: SA27400

Saxagliptin

Boc-Saxagliptin

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CAS No.

: 709031-43-6

Mol F.

: C23H33N3O4

Mol W.

: 415.53

Cat No.

: SA27421

Bortezomib

Bortezomib Acid Analog

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CAS No.

: 114457-94-2

Mol F.

: C14H13N3O3

Mol W.

: 271.27

Cat No.

: SA60904

Bortezomib

Bortezomib Impurity (R,R-Isomer)

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CAS No.

: 1132709-15-9

Mol F.

: C19H25BN4O4

Mol W.

: 384.24

Cat No.

: SA60907

Bortezomib

Bortezomib Impurity (R,S-Isomer)

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CAS No.

: 1132709-16-0

Mol F.

: C19H25BN4O4

Mol W.

: 384.2

Cat No.

: SA60908

Bortezomib

Bortezomib Impurity (S,S-Isomer)

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CAS No.

: 1132709-14-8

Mol F.

: C19H25BN4O4

Mol W.

: 384.24

Cat No.

: SA60909

Bortezomib

Bortezomib Impurity A

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CAS No.

: 289472-80-6

Mol F.

: C14H14N4O2

Mol W.

: 270.29

Cat No.

: SA60900

Bortezomib

Bortezomib Impurity G

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CAS No.

: 289472-81-7

Mol F.

: C19H24N4O3

Mol W.

: 356.42

Cat No.

: SA60905

Bortezomib

Bortezomib Impurity H

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CAS No.

: 1446194-56-4

Mol F.

: C19H24N4O2

Mol W.

: 340.42

Cat No.

: SA60906

Bortezomib

Bortezomib Impurity M

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CAS No.

: NA

Mol F.

: C19H24N4O4

Mol W.

: 372.42

Cat No.

: SA60902

Bortezomib

Bortezomib impurity U

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CAS No.

: NA

Mol F.

: C19H22N4O3

Mol W.

: 354.4

Cat No.

: SA60903

Bortezomib

Bortezomib R-Hydroperoxide

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CAS No.

: 886979-78-8

Mol F.

: C19H24N4O4

Mol W.

: 372.42

Cat No.

: SA60901

Bortezomib

Bortezomib Trimer

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CAS No.

: 390800-88-1

Mol F.

: C57H69B3N12O9

Mol W.

: 1098.67

Cat No.

: SA60910

Bosentan, Impurities

Bosentan

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CAS No.

: 147536-97-8

Mol F.

: C27H29N5O6S

Mol W.

: 551.62

Cat No.

: SA28600

Bosentan, Impurities

Bosentan Acetate

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CAS No.

: 1160515-46-7

Mol F.

: C19H17ClN4O5

Mol W.

: 416.81

Cat No.

: SA28601

Bosentan

Bosentan Dimethoxy Impurity

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CAS No.

: 157415-46-8

Mol F.

: C26H27N5O5S

Mol W.

: 521.59

Cat No.

: SA28610

Bosentan, Impurities

Bosentan hydroxyethoxy ethyl Impurity

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CAS No.

: 1257099-43-6

Mol F.

: C29H33N5O7S

Mol W.

: 595.67

Cat No.

: SA28608

Bosutinib, Impurities

Bosutinib Des NMP Impurity

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CAS No.

: 2095306-25-3

Mol F.

: C21H19Cl2N3O3

Mol W.

: 432.3

Cat No.

: SA61000

Bosutinib, Impurities

Bosutinib Desmethyl Impurity

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CAS No.

: 2468737-92-8

Mol F.

: C25H27Cl2N5O3

Mol W.

: 516.42

Cat No.

: SA61001

Bosutinib, Impurities

Bosutinib Didesmethyl Impurity

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CAS No.

: 2468737-94-0

Mol F.

: C24H25Cl2N5O3

Mol W.

: 502.4

Cat No.

: SA61002

Bosutinib, Impurities

Bosutinib Dimer impurity

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CAS No.

: NA

Mol F.

: C47H46Cl4N8O6

Mol W.

: 960.73

Cat No.

: SA61003

Bosutinib, Impurities

Bosutinib Piperazine N4-Oxide Impurity

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CAS No.

: NA

Mol F.

: C26H29Cl2N5O4

Mol W.

: 546.45

Cat No.

: SA61007

Brexpiprazole, Impurities

Brexpiprazole

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CAS No.

: 913611-97-9

Mol F.

: C25H27N3O2S

Mol W.

: 433.57

Cat No.

: SA41300

Brexpiprazole, Impurities

Brexpiprazole (3,4)-Dihydro-2(1H)-quinolinone

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CAS No.

: 913612-07-4

Mol F.

: C25H29N3O2S

Mol W.

: 435.58

Cat No.

: SA41317

Brexpiprazole, Impurities

Brexpiprazole 4-Chlorobenzo thiophene Impurity | CAS : 66490-33-3

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CAS No.

: 66490-33-3

Mol F.

: C8H5ClS

Mol W.

: 168.6

Cat No.

: SA41341

Brexpiprazole, Impurities

Brexpiprazole Benzo[b]thiophene Dimer

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CAS No.

: 1420987-86-5

Mol F.

: C20H18N2S2

Mol W.

: 350.5

Cat No.

: SA41322

Brexpiprazole, Impurities

Brexpiprazole Benzothiophenyl Dimer Impurity

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CAS No.

: 2138169-93-2

Mol F.

: C41H47N5O2S2

Mol W.

: 706.0

Cat No.

: SA41343

Brexpiprazole, Impurities

Brexpiprazole Desquinolinonyl Impurity

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CAS No.

: 913614-15-0

Mol F.

: C16H22N2OS

Mol W.

: 290.42

Cat No.

: SA41303

Brexpiprazole, Impurities

Brexpiprazole DiBenzo[b]thiophene Analog

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CAS No.

: NA

Mol F.

: C33H33N3O2S2

Mol W.

: 567.77

Cat No.

: SA41305

Brexpiprazole, Impurities

Brexpiprazole DiOxide

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CAS No.

: NA

Mol F.

: C25H27N3O4S

Mol W.

: 465.57

Cat No.

: SA41308

Brexpiprazole, Impurities

Brexpiprazole N-Dimer Impurity

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CAS No.

: 2094559-58-5

Mol F.

: C38H40N4O4S

Mol W.

: 648.81

Cat No.

: SA41307

Brexpiprazole

Brexpiprazole N-Substituted Impurity

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CAS No.

: 2454317-19-0

Mol F.

: C38H41IN4O4S

Mol W.

: 776.73

Cat No.

: SA41344

Brexpiprazole, Impurities

Brexpiprazole O-Dimer

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CAS No.

: 2116542-21-1

Mol F.

: C38H40N4O4S

Mol W.

: 648.81

Cat No.

: SA41306

Brexpiprazole, Impurities

Brexpiprazole Piperazine Quinoline Impurity

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CAS No.

: 1849603-58-2

Mol F.

: C17H23N3O2

Mol W.

: 301.4

Cat No.

: SA41333

Brexpiprazole, Impurities

Brexpiprazole Spiro Analog | CAS : 2143944-65-2

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CAS No.

: 2143944-65-2

Mol F.

: 353.32

Mol W.

: C16H21BrN2S

Cat No.

: SA41342

Brexpiprazole, Impurities

Brexpiprazole Sulfone

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CAS No.

: NA

Mol F.

: C25H27N3O4S

Mol W.

: 465.56

Cat No.

: SA41302

Brexpiprazole, Impurities

Brexpiprazole Sulfoxide

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CAS No.

: 1191900-51-2

Mol F.

: C25H27N3O3S

Mol W.

: 449.57

Cat No.

: SA41301

Brimonidine, Impurities

Brimonidine Carbamothioate Impurity

$250.00 25 mg

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CAS No.

: 842138-75-4

Mol F.

: C11H10BrN3OS

Mol W.

: 312.19

Cat No.

: SA20713

Brimonidine, Impurities

Brimonidine Maleic Acid Monoamide

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CAS No.

: NA

Mol F.

: C15H12BrN5O3

Mol W.

: 390.2

Cat No.

: SA20729

Brimonidine, Impurities

Brimonidine N,N-Methylene Dimer

$1,250.00 25 mg

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CAS No.

Mol F.

: C23H20Br2N10

Mol W.

: 596.28

Cat No.

: SA20714

Brimonidine, Impurities

Brimonidine Pyrimidine Carboxylic Acid Impurity

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CAS No.

: 934548-66-0

Mol F.

: C15H12BrN5O3

Mol W.

: 390.19

Cat No.

: SA20731

Brinzolamide, Impurities

Brinzolamide

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CAS No.

: 138890-62-7

Mol F.

: C12H21N3O5S3

Mol W.

: 383.51

Cat No.

: SA47200

Brinzolamide, Impurities

Brinzolamide (4S)-Hydroxy Impurity

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CAS No.

: 154127-42-1

Mol F.

: C10H16N2O6S3

Mol W.

: 356.44

Cat No.

: SA47205

Brinzolamide, Impurities

Brinzolamide Hydroxy Impurity (R)-Isomer

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CAS No.

: 165117-54-4

Mol F.

: C10H16N2O6S3

Mol W.

: 356.44

Cat No.

: SA47209

Brinzolamide, Impurities

Brinzolamide Methanesulfonyl Amide Impurity

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CAS No.

: NA

Mol F.

: C13H23N3O7S4

Mol W.

: 461.6

Cat No.

: SA47202

Brinzolamide

Brinzolamide N-(2-hydroxyethyl) Impurity

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CAS No.

: NA

Mol F.

: C14H25N3O6S3

Mol W.

: 427.55

Cat No.

: SA47210

Brinzolamide

Brinzolamide N-Tosyl Impurity

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CAS No.

: NA

Mol F.

: C19H27N3O7S4

Mol W.

: 537.69

Cat No.

: SA47211

Brivaracetam, Impurities

Brivaracetam Impurity B

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CAS No.

: 2253826-01-4 (Free Base)

Mol F.

: C15H30N2O3

Mol W.

: 286.4

Cat No.

: SA47308

Brivaracetam, Impurities

Brivaracetam-N-butyramide

Please enquire for price & pack size

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CAS No.

: 357336-20-0

Mol F.

: C15H27N3O3

Mol W.

: 297.39

Cat No.

: SA47306

Diphenhydramine, Impurities

Bromazine

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CAS No.

: 1808-12-4(HCl); 118-23-0(Base)

Mol F.

: C17H21BrClNO

Mol W.

: 370.71

Cat No.

: SA19803