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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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Impurities, Triamcinolone Acetonide

Triamcinolone Acetonide EP Impurity C

$295.00 25 mg

Out of Stock

CAS No.

: 161740-69-8

Mol F.

: C24H31FO7

Mol W.

: 450.50

Cat No.

: SA30203

Impurities, Triamcinolone Acetonide

Triamcinolone Acetonide EP Impurity D

$395.00 25 mg

Out of Stock

CAS No.

: 10392-74-2

Mol F.

: C24H31ClO6

Mol W.

: 450.95

Cat No.

: SA30204

Fluocinonide, Impurities

Triamcinolone Acetonide; Fluocinolone Acetonide EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 76-25-5

Mol F.

: C24H31FO6

Mol W.

: 434.5

Cat No.

: SA35408

Impurities, Triamcinolone Acetonide

Triamcinolone Hexacetonide

$295.00 25 mg

Out of Stock

CAS No.

: 5611-51-8

Mol F.

: C₃₀H₄₁FO₇

Mol W.

: 532.64

Cat No.

: SA30213

Impurities, Trazodone

Triazolopyridinone

Please enquire for price & pack size

Out of Stock

CAS No.

: 6969-71-7

Mol F.

: C₆H₅N₃O

Mol W.

: 135.12

Cat No.

: SA30310

Impurities, Sitagliptin

Tridesfluoro benzene diamide Sitagliptin impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C26H26F6N6O2

Mol W.

: 568.51

Cat No.

: SA10429

Impurities, Triflic acid

Triflic acid ethyl ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 425-75-1

Mol F.

: C3H5F3O3S

Mol W.

: 178.13

Cat No.

: SA47602

Impurities, Triflic acid

Triflic acid methyl ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 333-27-7

Mol F.

: C2H3F3O3S

Mol W.

: 164.1

Cat No.

: SA47601

Impurities, Trimetazidine

Trimetazidine

Please enquire for price & pack size

Out of Stock

CAS No.

: 13171-25-0

Mol F.

: C14H22N2O3

Mol W.

: 266.33999999999997

Cat No.

: SA35100

Impurities, Trimetazidine

Trimetazidine EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 52146-35-7

Mol F.

: C14H22N2O3

Mol W.

: 266.33999999999997

Cat No.

: SA35101

Impurities, Trimetazidine

Trimetazidine EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1257-19-8

Mol F.

: C24H34N2O6

Mol W.

: 446.54

Cat No.

: SA35102

Impurities, Trimetazidine

Trimetazidine EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 2103-57-3

Mol F.

: C10H12O4

Mol W.

: 196.2

Cat No.

: SA35103

Impurities, Trimetazidine

Trimetazidine EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 71989-96-3

Mol F.

: C10H14O4

Mol W.

: 198.22

Cat No.

: SA35104

Impurities, Trimetazidine

Trimetazidine EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 356083-64-2

Mol F.

: C14H22N2O3

Mol W.

: 266.33999999999997

Cat No.

: SA35105

Impurities, Trimetazidine

Trimetazidine EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 113698-83-2

Mol F.

: C14H22N2O3

Mol W.

: 266.33999999999997

Cat No.

: SA35106

Impurities, Trimetazidine

Trimetazidine EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 110-85-0

Mol F.

: C4H10N2

Mol W.

: 86.14

Cat No.

: SA35107

Impurities, Trimetazidine

Trimetazidine EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 53531-01-4

Mol F.

: C17H26N2O5

Mol W.

: 338.4

Cat No.

: SA35108

Impurities, Trimetazidine

Trimetazidine EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: 53960-20-6

Mol F.

: C15H24N2O3

Mol W.

: 280.36

Cat No.

: SA35109

Impurities, Trimethoprim

Trimethoprim

$95.00 25 mg

Out of Stock

CAS No.

: 738-70-5

Mol F.

: C14H18N4O3

Mol W.

: 290.32

Cat No.

: SA27100

Impurities, Trimethoprim

Trimethoprim EP Impurity E

$175.00 25 mg

Out of Stock

CAS No.

: 60729-91-1

Mol F.

: C14H17N3O4

Mol W.

: 291.3

Cat No.

: SA27105

Impurities, Trimethoprim

Trimethoprim EP Impurity K

$75.00 25 mg

Out of Stock

CAS No.

: 62-53-3

Mol F.

: C6H7N

Mol W.

: 93.13

Cat No.

: SA27111

Hydrocortisone Valerate, Impurities

Trimethyl Ortho Valerate

Please enquire for price & pack size

Out of Stock

CAS No.

: 13820-09-2

Mol F.

: C8H18O3

Mol W.

: 162.22999999999999

Cat No.

: SA27316

Impurities, Olmesartan Medoxomil

Trityl Olmesartan Acid (N2)

$175.00 25 mg

Out of Stock

CAS No.

: 752179-89-8

Mol F.

: C43H40N6O3

Mol W.

: 688.82

Cat No.

: SA17728

Impurities, Tiotropium

Trop-6-ene-3endo-ol

Please enquire for price & pack size

Out of Stock

CAS No.

: 20513-09-1

Mol F.

: C8H13NO

Mol W.

: 139.19

Cat No.

: SA11722

Atropine, Impurities

Tropinone

Please enquire for price & pack size

Out of Stock

CAS No.

: 532-24-1

Mol F.

: C8H13NO

Mol W.

: 139.19

Cat No.

: SA47709

Impurities, Trospium

Trospium Chloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 10405-02-4

Mol F.

: C25H30ClNO3

Mol W.

: 427.96

Cat No.

: SA17302

Impurities, Trospium

Trospium Chloride EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 63516-30-3

Mol F.

: C21H24ClNO3

Mol W.

: 373.87

Cat No.

: SA17306

Impurities, Trospium

Trospium Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 16444-19-2

Mol F.

: C₂₁H₂₃NO₃

Mol W.

: 337.41

Cat No.

: SA17304

Impurities, Trospium

Trospium Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 3464-71-9

Mol F.

: C₁₁H₂₀ClNO

Mol W.

: 217.74

Cat No.

: SA17305

Impurities, Trospium

Trospium Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 467-32-3

Mol F.

: C28H20O4

Mol W.

: 420.46

Cat No.

: SA17301

Impurities, Terbutaline

Tulobuterol

Please enquire for price & pack size

Out of Stock

CAS No.

: 41570-61-0

Mol F.

: C₁₂H₁₈ClNO

Mol W.

: 227.73

Cat No.

: SA29009

Impurities, Nitrosamine

Tulobuterol Nitroso Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C12H17ClN2O2

Mol W.

: 256.73

Cat No.

: SA44692

Impurities, Ulipristal

Ulipristal

Please enquire for price & pack size

Out of Stock

CAS No.

: 159811-51-5

Mol F.

: C28H35NO3

Mol W.

: 433.58

Cat No.

: SA27900

Impurities, Ulipristal

Ulipristal Acetate

Please enquire for price & pack size

Out of Stock

CAS No.

: 126784-99-4

Mol F.

: C30H37NO4

Mol W.

: 475.62

Cat No.

: SA27901

Impurities, Indacaterol

Unknown Impurity at RRT 0.96

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H14ClNO3

Mol W.

: 327.76

Cat No.

: SA48708

Impurities, Ursodiol

Ursodiol

Please enquire for price & pack size

Out of Stock

CAS No.

: 128-13-2

Mol F.

: C24H40O4

Mol W.

: 392.57

Cat No.

: SA31204

Azacitidine, Impurities

USP Azacitidine Related Compound A

Please enquire for price & pack size

Out of Stock

CAS No.

: 931-86-2

Mol F.

: C3H4N4O

Mol W.

: 112.09

Cat No.

: SA37501

Azacitidine, Impurities

USP Azacitidine Related Compound B

Please enquire for price & pack size

Out of Stock

CAS No.

: 6974-32-9

Mol F.

: C28H24O9

Mol W.

: 504.48

Cat No.

: SA37502

Azacitidine, Impurities

USP Azacitidine Related Compound C

Please enquire for price & pack size

Out of Stock

CAS No.

: 2508-80-7

Mol F.

: C7H14N4O5

Mol W.

: 234.21

Cat No.

: SA37503

Carvedilol, Impurities

USP Carvedilol Related Compound F

Please enquire for price & pack size

Out of Stock

CAS No.

: 1246820-73-4

Mol F.

: C24H30N2O4

Mol W.

: 410.5

Cat No.

: SA31708

Cinacalcet, Impurities

USP Cinacalcet Related Compound A

Please enquire for price & pack size

Out of Stock

CAS No.

: 21172-43-0

Mol F.

: C11H13F3O3S

Mol W.

: 282.28

Cat No.

: SA34201

Cinacalcet, Impurities

USP Cinacalcet Related Compound B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1271930-15-4

Mol F.

: C32H31F6N

Mol W.

: 543.59

Cat No.

: SA34210

Cinacalcet, Impurities

USP Cinacalcet Related Compound C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1428185-71-0 (base); 1428118-39-1 (HCl)

Mol F.

: C22H23ClF3N

Mol W.

: 393.87

Cat No.

: SA34202

Cinacalcet, Impurities

USP Cinacalcet Related Compound E

Please enquire for price & pack size

Out of Stock

CAS No.

: 78573-45-2

Mol F.

: C10H11F3O

Mol W.

: 204.19

Cat No.

: SA34203

Decitabine, Impurities

USP Decitabine Related Compound A

Please enquire for price & pack size

Out of Stock

CAS No.

: 1207459-15-1

Mol F.

: C21H18Cl2O7

Mol W.

: 453.27

Cat No.

: SA42203

Decitabine, Impurities

USP Decitabine Related Compound B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1034301-08-0

Mol F.

: C22H18Cl2N4O6

Mol W.

: 505.31

Cat No.

: SA42204

Decitabine, Impurities

USP Decitabine Related Compound C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1140891-02-6

Mol F.

: C22H18Cl2N4O6

Mol W.

: 505.31

Cat No.

: SA42206

Diclofenac, Impurities

USP Diclofenac Related Compound A

Please enquire for price & pack size

Out of Stock

CAS No.

: 15362-40-0

Mol F.

: C₁₄H₉Cl₂NO

Mol W.

: 278.13

Cat No.

: SA12707

Donepezil, Impurities

USP Donepezil Alkene Pyridine N-Oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 896134-06-8

Mol F.

: C17H15NO4

Mol W.

: 297.31

Cat No.

: SA34321

Donepezil, Impurities

USP Donepezil Pyridine Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: 4803-57-0

Mol F.

: C17H17NO3

Mol W.

: 283.32

Cat No.

: SA34322