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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.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Budesonide, Impurities

Budesonide 17-Keto 11-β-16-α-diol Impurity

$395.00 25 mg

Out of Stock

CAS No.

: 910299-74-0

Mol F.

: C19H24O4

Mol W.

: 316.39

Cat No.

: SA14113

Budesonide, Impurities

Budesonide 17,21-Diacetyloxy Impurity

$155.00 25 mg

Out of Stock

CAS No.

: 17652-24-3

Mol F.

: C25H32O7

Mol W.

: 444.52

Cat No.

: SA14127

Budesonide, Impurities

Budesonide 21-carboxylic acid Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C25H32O7

Mol W.

: 444.53

Cat No.

: SA14122

Budesonide, Impurities

Budesonide 21-Sulfate

$175.00 25 mg

Out of Stock

CAS No.

: 1436796-04-1

Mol F.

: C25H34O9S

Mol W.

: 510.6

Cat No.

: SA14107

Budesonide, Impurities

Budesonide 6-α-Hydroxy Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 577777-51-6

Mol F.

: C25H34O7

Mol W.

: 446.53

Cat No.

: SA14116

Budesonide, Impurities

Budesonide 6-β-Hydroxy Impurity

$495.00 25 mg

Out of Stock

CAS No.

: 88411-77-2

Mol F.

: C25H34O7

Mol W.

: 446.53

Cat No.

: SA14117

Bumetanide, Impurities

Bumetanide

$100.00 25 mg

Out of Stock

CAS No.

: 28395-03-1

Mol F.

: C17H20N2O5S

Mol W.

: 364.42

Cat No.

: SA24404

Bupropion, Impurities

Bupropion Hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 31677-93-7

Mol F.

: C₁₃H₁₉Cl₂NO

Mol W.

: 276.2

Cat No.

: SA12221

Bupropion, Impurities

Bupropion hydrochloride API

Please enquire for price & pack size

Out of Stock

CAS No.

: 34841-39-9

Mol F.

: C13H18ClNO

Mol W.

: 239.74

Cat No.

: SA12236

Bupropion, Impurities

Bupropion Hydroxy Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 92264-81-8

Mol F.

: C13H18ClNO2

Mol W.

: 255.74

Cat No.

: SA12237

Buspirone, Impurities

Buspirone 5-Hydroxy Metabolite

$1,550.00 25 mg

Out of Stock

CAS No.

: 105496-33-1

Mol F.

: C21H31N5O3

Mol W.

: 401.5

Cat No.

: SA25814

Buspirone, Impurities

Buspirone 6-Hydroxy Metabolite

$1,550.00 25 mg

Out of Stock

CAS No.

: 125481-61-0

Mol F.

: C21H31N5O3

Mol W.

: 401.5

Cat No.

: SA25815

Buspirone, Impurities

Buspirone EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 81461-73-6

Mol F.

: C12H19BrN4

Mol W.

: 299.21

Cat No.

: SA25801

Buspirone, Impurities

Buspirone EP Impurity F

$295.00 25 mg

Out of Stock

CAS No.

: 2512210-24-9

Mol F.

: C33H51N9O3

Mol W.

: 621.82

Cat No.

: SA25805

Buspirone, Impurities

Buspirone EP Impurity I

$350.00 25 mg

Out of Stock

CAS No.

: 2725354-99-2

Mol F.

: C21H30ClN5O2

Mol W.

: 419.95

Cat No.

: SA25808

Impurities, Sitagliptin

butyl 4-hydroxy-3,5-bis(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)benzoate

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C23H24F6N8O3

Mol W.

: 574.48

Cat No.

: SA10458

Canagliflozin, Impurities

Canagliflozin

Please enquire for price & pack size

Out of Stock

CAS No.

: 842133-18-0

Mol F.

: C₂₄H₂₅FO₅S

Mol W.

: 444.52

Cat No.

: SA14911

Canagliflozin, Impurities

Canagliflozin 2,3-dehydroxy impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H23FO4S

Mol W.

: 426.5

Cat No.

: SA14920

Canagliflozin, Impurities

Canagliflozin Acetophenon Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C20H17FOS

Mol W.

: 324.42

Cat No.

: SA14913

Canagliflozin, Impurities

Canagliflozin Bromo Impurity

$85.00 25 mg

Out of Stock

CAS No.

: 1030825-20-7

Mol F.

: C18H14BrFS

Mol W.

: 361.27

Cat No.

: SA14916

Canagliflozin, Impurities

Canagliflozin Chloro Impurity; 2′-Deshydroxymethyl-2′-Chloromethyl-canagliflozin

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H24ClFO4S

Mol W.

: 463

Cat No.

: SA14928

Canagliflozin, Impurities

Canagliflozin Dimer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C48H48F2O10S2

Mol W.

: 887.02

Cat No.

: SA14907

Canagliflozin, Impurities

Canagliflozin Dimer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C48H48F2O10S2

Mol W.

: 887.02

Cat No.

: SA14931

Canagliflozin, Impurities

Canagliflozin Furanose Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H25FO5S

Mol W.

: 444.52

Cat No.

: SA14929

Canagliflozin, Impurities

Canagliflozin Hydroperoxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 2247196-28-5

Mol F.

: C24H25FO7S

Mol W.

: 476.51

Cat No.

: SA14918

Candesartan, Impurities

Candesartan

Please enquire for price & pack size

Out of Stock

CAS No.

: 145040-37-5

Mol F.

: C33H34N6O6

Mol W.

: 610.66

Cat No.

: SA39100

Candesartan, Impurities

Candesartan EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 139481-58-6

Mol F.

: C26H24N6O3

Mol W.

: 468.51

Cat No.

: SA39101

Candesartan, Impurities

Candesartan EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 869631-11-8

Mol F.

: CƒHƒ€N†O†

Mol W.

: 582.61

Cat No.

: SA39102

Candesartan, Impurities

Candesartan EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1185255-99-5

Mol F.

: C33H34N6O6

Mol W.

: 610.66

Cat No.

: SA39103

Candesartan, Impurities

Candesartan EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 1185256-03-4

Mol F.

: C33H34N6O6

Mol W.

: 610.66

Cat No.

: SA39104

Candesartan, Impurities

Candesartan EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 914613-35-7

Mol F.

: Cƒ…HƒˆN†O†

Mol W.

: 638.71

Cat No.

: SA39105

Candesartan, Impurities

Candesartan EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 914613-36-8

Mol F.

: Cƒ…HƒˆN†O†

Mol W.

: 638.71

Cat No.

: SA39106

Candesartan, Impurities

Candesartan EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 139481-59-7

Mol F.

: C‚„H‚€N†Oƒ

Mol W.

: 440.45

Cat No.

: SA39107

Candesartan, Impurities

Candesartan EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 170791-09-0

Mol F.

: C52H48N6O6

Mol W.

: 852.97

Cat No.

: SA39108

Candesartan, Impurities

Candesartan EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: 139481-69-9

Mol F.

: C‚…H‚‚N†Oƒ

Mol W.

: 454.48

Cat No.

: SA39109

Cangrelor, Impurities

Cangrelor

Please enquire for price & pack size

Out of Stock

CAS No.

: 163706-06-7

Mol F.

: C17H25Cl2F3N5O12P3S2

Mol W.

: 776.36

Cat No.

: SA29400

Cangrelor, Impurities

Cangrelor Tetrasodium Salt

Please enquire for price & pack size

Out of Stock

CAS No.

: 163706-36-3

Mol F.

: C₁₇H₂₁Cl₂F₃N₅Na₄O₁₂P₃S₂

Mol W.

: 864.29

Cat No.

: SA29407

Cangrelor, Impurities

Cangrelor Triacetate Impurity

$255.00 25 mg

Out of Stock

CAS No.

: 1830294-26-2

Mol F.

: C₂₂H₂₈F₃N₅O₇S₂

Mol W.

: 595.61

Cat No.

: SA29403

Capecitabine, Impurities

Capecitabine

$80.00 25 mg

Out of Stock

CAS No.

: 154361-50-9

Mol F.

: C15H22FN3O6

Mol W.

: 359.35

Cat No.

: SA37800

Capecitabine, Impurities

Capecitabine alpha-Isomer

$650.00 25 mg

Out of Stock

CAS No.

Mol F.

: C15H22FN3O6

Mol W.

: 359.35

Cat No.

: SA37812

Capecitabine, Impurities

Capecitabine EP Impurity A

$100.00 25 mg

Out of Stock

CAS No.

: 66335-38-4

Mol F.

: C9H12FN3O4

Mol W.

: 245.21

Cat No.

: SA37801

Capecitabine, Impurities

Capecitabine EP Impurity B

$80.00 25 mg

Out of Stock

CAS No.

: 3094-09-5

Mol F.

: C9H11FN2O5

Mol W.

: 246.19

Cat No.

: SA37802

Capecitabine, Impurities

Capecitabine EP Impurity F

$150.00 25 mg

Out of Stock

CAS No.

: 921769-65-5

Mol F.

: C16H20FN3O7

Mol W.

: 385.34

Cat No.

: SA37806

Capecitabine, Impurities

Capecitabine Methoxy Analog

$350.00 25 mg

Out of Stock

CAS No.

: 296248-49-2

Mol F.

: C11H14FN3O6

Mol W.

: 303.24

Cat No.

: SA37810

Carbamazepine, Impurities

Carbamazepine 10,11-Epoxide

$95.00 25 mg

Out of Stock

CAS No.

: 36507-30-9

Mol F.

: C15H12N2O2

Mol W.

: 252.27

Cat No.

: SA20315

Carbamazepine, Impurities

Carbamazepine EP Impurity B

$95.00 25 mg

Out of Stock

CAS No.

: 611-64-3

Mol F.

: C14H11N

Mol W.

: 193.24

Cat No.

: SA20308

Carbamazepine, Impurities

Carbamazepine EP Impurity F

$75.00 25 mg

Out of Stock

CAS No.

: 33948-22-0

Mol F.

: C15H10ClNO

Mol W.

: 255.7

Cat No.

: SA20312

Carbamazepine, Impurities

Carbamazepine N-Bromocarbonyl Impurity

$395.00 25 mg

Out of Stock

CAS No.

: 40421-05-4

Mol F.

: C15H10BrNO

Mol W.

: 300.15

Cat No.

: SA20305

Carisoprodol, Impurities

Carbamyl Benzyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 621-84-1

Mol F.

: C₈H₉NO₂

Mol W.

: 151.16

Cat No.

: SA25308

Carbidopa, Impurities

Carbidopa

$75.00 25 mg

Out of Stock

CAS No.

: 38821-49-7

Mol F.

: C10H16N2O5

Mol W.

: 244.24

Cat No.

: SA31800