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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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Bisacodyl, Impurities

Bisacodyl

Please enquire for price & pack size

Out of Stock

CAS No.

: 603-50-9

Mol F.

: C22H19NO4

Mol W.

: 361.39

Cat No.

: SA36400

Bisacodyl, Impurities

Bisacodyl EP Impurity A

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Out of Stock

CAS No.

: 603-41-8

Mol F.

: C18H15NO2

Mol W.

: 277.32

Cat No.

: SA36401

Bisacodyl, Impurities

Bisacodyl EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 16985-05-0

Mol F.

: C18H15NO2

Mol W.

: 277.32

Cat No.

: SA36402

Bisacodyl, Impurities

Bisacodyl EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 72901-16-7

Mol F.

: C20H17NO3

Mol W.

: 319.35

Cat No.

: SA36403

Bisacodyl, Impurities

Bisacodyl EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 111664-35-8

Mol F.

: C22H19NO4

Mol W.

: 361.39

Cat No.

: SA36404

Etoricoxib, Impurities

Bisindolylmaleimide III, Hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 683775-59-9

Mol F.

: C23H21ClN4O2

Mol W.

: 420.89

Cat No.

: SB10201

Etoricoxib, Impurities

Bisindolylmaleimide IV

Please enquire for price & pack size

Out of Stock

CAS No.

: 119139-23-0

Mol F.

: C20H13N3O2

Mol W.

: 327.34

Cat No.

: SB10203

Etoricoxib, Impurities

Bisindolylmaleimide VIII acetate salt

Please enquire for price & pack size

Out of Stock

CAS No.

: 138516-31-1

Mol F.

: C24H22N4O2

Mol W.

: 398.46

Cat No.

: SB10204

Bisoprolol, Impurities

Bisoprolol Alcohol Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 623-05-2

Mol F.

: C7H8O2

Mol W.

: 124.14

Cat No.

: SA35616

Bisoprolol, Impurities

Bisoprolol EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 1217245-60-7

Mol F.

: C18H29NO3

Mol W.

: 307.43

Cat No.

: SA35605

Bisoprolol, Impurities

Bisoprolol EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 1798418-82-2(Base)

Mol F.

: C18H31NO4

Mol W.

: 325.44

Cat No.

: SA35606

Bisoprolol, Impurities

Bisoprolol EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 1215342-36-1

Mol F.

: C19H33NO5

Mol W.

: 355.47

Cat No.

: SA35607

Bisoprolol, Impurities

Bisoprolol EP Impurity J

Please enquire for price & pack size

Out of Stock

CAS No.

: 1797024-50-0

Mol F.

: C15H24O5

Mol W.

: 284.35

Cat No.

: SA35608

Bisoprolol, Impurities

Bisoprolol EP Impurity S

Please enquire for price & pack size

Out of Stock

CAS No.

: 123-08-0

Mol F.

: C7H6O2

Mol W.

: 122.12

Cat No.

: SA35615

Impurities, Saxagliptin

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

Please enquire for price & pack size

Out of Stock

CAS No.

: 361442-00-4

Mol F.

: C17H27NO5

Mol W.

: 325.45999999999998

Cat No.

: SA27400

Bosentan, Impurities

Bosentan

Please enquire for price & pack size

Out of Stock

CAS No.

: 147536-97-8

Mol F.

: C27H29N5O6S

Mol W.

: 551.62

Cat No.

: SA28600

Bosentan, Impurities

Bosentan Acetate

Please enquire for price & pack size

Out of Stock

CAS No.

: 1160515-46-7

Mol F.

: C19H17ClN4O5

Mol W.

: 416.81

Cat No.

: SA28601

Bosentan, Impurities

Bosentan hydroxyethoxy ethyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1257099-43-6

Mol F.

: C29H33N5O7S

Mol W.

: 595.67

Cat No.

: SA28608

Brexpiprazole, Impurities

Brexpiprazole

Please enquire for price & pack size

Out of Stock

CAS No.

: 913611-97-9

Mol F.

: C25H27N3O2S

Mol W.

: 433.57

Cat No.

: SA41300

Brexpiprazole, Impurities

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

Please enquire for price & pack size

Out of Stock

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

Please enquire for price & pack size

Out of Stock

CAS No.

: 66490-33-3

Mol F.

: C8H5ClS

Mol W.

: 168.6

Cat No.

: SA41341

Brexpiprazole, Impurities

Brexpiprazole Benzo[b]thiophene Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 1420987-86-5

Mol F.

: C20H18N2S2

Mol W.

: 350.5

Cat No.

: SA41322

Brexpiprazole, Impurities

Brexpiprazole Desquinolinonyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 913614-15-0

Mol F.

: C16H22N2OS

Mol W.

: 290.42

Cat No.

: SA41303

Brexpiprazole, Impurities

Brexpiprazole DiBenzo[b]thiophene Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C33H33N3O2S2

Mol W.

: 567.77

Cat No.

: SA41305

Brexpiprazole, Impurities

Brexpiprazole DiOxide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C25H27N3O4S

Mol W.

: 465.57

Cat No.

: SA41308

Brexpiprazole, Impurities

Brexpiprazole N-Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2094559-58-5

Mol F.

: C38H40N4O4S

Mol W.

: 648.81

Cat No.

: SA41307

Brexpiprazole, Impurities

Brexpiprazole O-Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: 2116542-21-1

Mol F.

: C38H40N4O4S

Mol W.

: 648.81

Cat No.

: SA41306

Brexpiprazole, Impurities

Brexpiprazole Piperazine Quinoline Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 1849603-58-2

Mol F.

: C17H23N3O2

Mol W.

: 301.4

Cat No.

: SA41333

Brexpiprazole, Impurities

Brexpiprazole Spiro Analog | CAS : 2143944-65-2

Please enquire for price & pack size

Out of Stock

CAS No.

: 2143944-65-2

Mol F.

: 353.32

Mol W.

: C16H21BrN2S

Cat No.

: SA41342

Brexpiprazole, Impurities

Brexpiprazole Sulfone

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C25H27N3O4S

Mol W.

: 465.56

Cat No.

: SA41302

Brexpiprazole, Impurities

Brexpiprazole Sulfoxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1191900-51-2

Mol F.

: C25H27N3O3S

Mol W.

: 449.57

Cat No.

: SA41301

Brimonidine, Impurities

Brimonidine Carbamothioate Impurity

$250.00 25 mg

Out of Stock

CAS No.

: 842138-75-4

Mol F.

: C11H10BrN3OS

Mol W.

: 312.19

Cat No.

: SA20713

Brimonidine, Impurities

Brimonidine N,N-Methylene Dimer

$1,250.00 25 mg

Out of Stock

CAS No.

Mol F.

: C23H20Br2N10

Mol W.

: 596.28

Cat No.

: SA20714

Brinzolamide, Impurities

Brinzolamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 138890-62-7

Mol F.

: C12H21N3O5S3

Mol W.

: 383.51

Cat No.

: SA47200

Brinzolamide, Impurities

Brinzolamide (4S)-Hydroxy Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 154127-42-1

Mol F.

: C10H16N2O6S3

Mol W.

: 356.44

Cat No.

: SA47205

Brinzolamide, Impurities

Brinzolamide Methanesulfonyl Amide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C13H23N3O7S4

Mol W.

: 461.6

Cat No.

: SA47202

Brivaracetam, Impurities

Brivaracetam Impurity B

Please enquire for price & pack size

Out of Stock

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

Out of Stock

CAS No.

: 357336-20-0

Mol F.

: C15H27N3O3

Mol W.

: 297.39

Cat No.

: SA47306

Diphenhydramine, Impurities

Bromazine

Please enquire for price & pack size

Out of Stock

CAS No.

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

Mol F.

: C17H21BrClNO

Mol W.

: 370.71

Cat No.

: SA19803

Bromfenac, Impurities

Bromfenac Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C30H18Br2N2O4

Mol W.

: 630.28

Cat No.

: SA18908

Bromfenac, Impurities

Bromfenac Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 102414-22-2

Mol F.

: C17H16BrNO3

Mol W.

: 362.22

Cat No.

: SA18905

Bromfenac, Impurities

Bromfenac Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C16H14BrNO3

Mol W.

: 348.19

Cat No.

: SA18906

Bromfenac, Impurities

Bromfenac sodium salt

Please enquire for price & pack size

Out of Stock

CAS No.

: 120638-55-3

Mol F.

: C15H11BrNNaO3

Mol W.

: 356.15

Cat No.

: SA18904

Bromhexine, Impurities

Bromhexine

Please enquire for price & pack size

Out of Stock

CAS No.

: 611-75-6

Mol F.

: C14H20Br2N2

Mol W.

: 376.13

Cat No.

: SA28400

Bromhexine, Impurities

Bromhexine Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 609-85-8

Mol F.

: C7H5Br2NO2

Mol W.

: 609-85-8

Cat No.

: SA28409

Bromhexine, Impurities

Bromhexine EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 50910-55-9

Mol F.

: C7H5Br2NO

Mol W.

: 278.93

Cat No.

: SA28402

Bromhexine, Impurities

Bromhexine EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 57365-08-9

Mol F.

: C14H22N2

Mol W.

: 218.34

Cat No.

: SA28403

Bromhexine, Impurities

Bromhexine EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 1661064-00-1(Base);1660957-93-6(Chloride)

Mol F.

: C15H21Br2N2

Mol W.

: 389.15

Cat No.

: SA28405

Bromhexine, Impurities

Bromhexine N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C14H20Br2N2O

Mol W.

: 392.13

Cat No.

: SA28406

Apixaban, Impurities

Bromo Nitro Ethyl Ester Apixaban Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C22H17BrN4O6

Mol W.

: 513.3

Cat No.

: SA39914