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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, Olmesartan Medoxomil

Iso Butylimidazole Imtermediate

Please enquire for price & pack size

Out of Stock

CAS No.

: 1346598-38-6

Mol F.

: C13H22N2O3

Mol W.

: 254.33

Cat No.

: SA17738

Ganciclovir, Impurities

Iso Ganciclovir

Please enquire for price & pack size

Out of Stock

CAS No.

: 86357-09-7

Mol F.

: C₉H₁₃N₅O₄

Mol W.

: 255.23

Cat No.

: SA13708

Impurities, Loratadine

Iso Loratadine A

Please enquire for price & pack size

Out of Stock

CAS No.

: 169253-13-8

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34035

Aciclovir, Impurities

Iso-Aciclovir

Please enquire for price & pack size

Out of Stock

CAS No.

: 374697-95-7

Mol F.

: C8H11N5O3

Mol W.

: 225.2

Cat No.

: SA21427

Gatifloxacin, Impurities

Iso-Gatifloxacin; Gatifloxacin 2-Methyl Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

: 1029364-65-5

Mol F.

: C19H21FN3O4

Mol W.

: 375.39

Cat No.

: SA37905

Impurities, Niacin

Isocinchomeronic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 100-26-5

Mol F.

: C7H5NO4

Mol W.

: 167.12

Cat No.

: SA33100

Ethisterone, Impurities

Isodanazol

Please enquire for price & pack size

Out of Stock

CAS No.

: 161696-95-3

Mol F.

: C₂₂H₂₇NO₂

Mol W.

: 337.46

Cat No.

: SA12903

Impurities, Nicotine

Isonicotine

Please enquire for price & pack size

Out of Stock

CAS No.

: 92118-22-4

Mol F.

: C₁₀H₁₄N₂

Mol W.

: 162.23

Cat No.

: SA32212

Impurities, Niacin

Isonicotinic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 55-22-1

Mol F.

: C6H5NO3

Mol W.

: 139.11000000000001

Cat No.

: SA33102

Impurities, Isoproterenol

Isoprenaline; Isoproterenol

Please enquire for price & pack size

Out of Stock

CAS No.

: 7683-59-2 (Base); 5178-52-9 (HCl salt)

Mol F.

: C11H17NO3

Mol W.

: 211.26

Cat No.

: SA25900

Impurities, Nirmatrelvir

Isopropyl (S)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanoate

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C10H18N2O3

Mol W.

: 214.3

Cat No.

: SA46911

Dapagliflozin, Impurities

Isopropyl Methanesulfonate Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 926-06-7

Mol F.

: C4H10O3S

Mol W.

: 138.19

Cat No.

: SA15040

Impurities, P-TOLUENESULFONATE

ISOPROPYL-P-TOLUENE SULPHONATE ESTER

Please enquire for price & pack size

Out of Stock

CAS No.

: 2307-69-9

Mol F.

: C10H14O3S

Mol W.

: 214.28

Cat No.

: SA23400

Clindamycin, Impurities

Isopropylidene Lincomycin

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C21H38N2O6S

Mol W.

: 446.6

Cat No.

: SA29718

Impurities, Isoquinoline

Isoquinoline

Please enquire for price & pack size

Out of Stock

CAS No.

: 119-65-3

Mol F.

: C₉H₇N

Mol W.

: 129.16

Cat No.

: SA19300

Impurities, Isoquinoline

Isoquinoline N-oxide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1532-72-5

Mol F.

: C9H7NO

Mol W.

: 145.16

Cat No.

: SA19311

Impurities, Isoquinoline

Isoquinoline-3-carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 6624-49-3

Mol F.

: C₁₀H₇NO₂

Mol W.

: 173.17

Cat No.

: SA19310

Impurities, Isoquinoline

Isoquinoline-5-Sulfonic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 27655-40-9

Mol F.

: C9H7N4O3S

Mol W.

: 209.23

Cat No.

: SA19307

Impurities, Isoquinoline

Isoquinoline-6-sulfonic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C9H7NO3S

Mol W.

: 209.23

Cat No.

: SA19306

Impurities, Tiagabine

Keto Tiagabine

Please enquire for price & pack size

Out of Stock

CAS No.

: 161014-55-7

Mol F.

: C20H25NO3S2

Mol W.

: 391.55

Cat No.

: SA10502

Impurities, Ketoprofen

Ketoprofen

Please enquire for price & pack size

Out of Stock

CAS No.

: 22071-15-4

Mol F.

: C16H14O3

Mol W.

: 254.28

Cat No.

: SA36600

Impurities, Ketoprofen

Ketoprofen EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 66067-44-5

Mol F.

: C15H12O2

Mol W.

: 224.25

Cat No.

: SA36601

Impurities, Ketoprofen

Ketoprofen EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 22071-22-3

Mol F.

: C15H12O3

Mol W.

: 240.25

Cat No.

: SA36602

Impurities, Ketoprofen

Ketoprofen EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 68432-95-1

Mol F.

: C10H10O4

Mol W.

: 194.18

Cat No.

: SA36603

Impurities, Ketoprofen

Ketoprofen EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 107257-20-5

Mol F.

: C17H16O3

Mol W.

: 268.31

Cat No.

: SA36604

Impurities, Ketoprofen

Ketoprofen EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 59512-16-2

Mol F.

: C16H15NO2

Mol W.

: 253.29

Cat No.

: SA36605

Impurities, Ketoprofen

Ketoprofen EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 42872-30-0

Mol F.

: C16H13NO

Mol W.

: 235.28

Cat No.

: SA36606

Impurities, Ketoprofen

Ketoprofen EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 5537-71-3

Mol F.

: C10H9NO2

Mol W.

: 175.18

Cat No.

: SA36607

Impurities, Ketoprofen

Ketoprofen EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: 5689-33-8

Mol F.

: C9H7NO2

Mol W.

: 161.16

Cat No.

: SA36608

Impurities, Ketoprofen

Ketoprofen EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: 21288-34-6

Mol F.

: C15H11NO

Mol W.

: 221.25

Cat No.

: SA36609

Impurities, Ketoprofen

Ketoprofen EP Impurity K

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C19H20O3

Mol W.

: 296.36

Cat No.

: SA36610

Impurities, Ketoprofen

Ketoprofen EP Impurity L

Please enquire for price & pack size

Out of Stock

CAS No.

: 1797984-80-5

Mol F.

: C19H20O3

Mol W.

: 296.36

Cat No.

: SA36611

Impurities, Ketoprofen

Ketoprofen Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 60658-04-0

Mol F.

: C18H18O3

Mol W.

: 282.33

Cat No.

: SA36612

Impurities, Ketoprofen

Ketoprofen Methyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 47087-07-0

Mol F.

: C17H16O3

Mol W.

: 268.31

Cat No.

: SA36615

Impurities, Ketoprofen

Ketoprofen R-Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

: 56105-81-8

Mol F.

: C16H14O3

Mol W.

: 254.28

Cat No.

: SA36614

Impurities, Ketoprofen

Ketoprofen S-Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

: 22161-81-5

Mol F.

: C16H14O3

Mol W.

: 254.28

Cat No.

: SA36613

Impurities, Ketorolac

Ketorolac

Please enquire for price & pack size

Out of Stock

CAS No.

: 74103-06-3

Mol F.

: C15H13NO3

Mol W.

: 255.27

Cat No.

: SA36100

Impurities, Ketorolac

Ketorolac 2-Benzoylpyrrole Chloro Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 87549-01-7

Mol F.

: C13H12ClNO

Mol W.

: 233.69

Cat No.

: SA36124

Impurities, Ketorolac

Ketorolac 2-Benzoylpyrrole Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 7697-46-3

Mol F.

: C11H9NO

Mol W.

: 171.19

Cat No.

: SA36120

Impurities, Ketorolac

Ketorolac 2-Benzoylpyrrole Iodo Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 141031-77-8

Mol F.

: C13H12INO

Mol W.

: 325.14

Cat No.

: SA36125

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Chloro Ester Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H18ClNO3

Mol W.

: 319.77999999999997

Cat No.

: SA36127

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Chloro Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2384938-36-5

Mol F.

: C13H12ClNO

Mol W.

: 233.69

Cat No.

: SA36122

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Diester Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C20H23NO5

Mol W.

: 357.4

Cat No.

: SA36130

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 141054-42-4

Mol F.

: C15H15NO3

Mol W.

: 257.27999999999997

Cat No.

: SA36128

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 7126-41-2

Mol F.

: C11H9NO

Mol W.

: 171.19

Cat No.

: SA36121

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Iodo Ester Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2514961-30-7

Mol F.

: C17H18INO3

Mol W.

: 411.23

Cat No.

: SA36126

Impurities, Ketorolac

Ketorolac 3-Benzoylpyrrole Iodo Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C13H12INO

Mol W.

: 325.14

Cat No.

: SA36123

Impurities, Ketorolac

Ketorolac 4-Hydroxy Phenyl

Please enquire for price & pack size

Out of Stock

CAS No.

: 111930-01-9

Mol F.

: C15H13NO4

Mol W.

: 271.27

Cat No.

: SA36112

Impurities, Ketorolac

Ketorolac EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 1026936-07-1

Mol F.

: C15H13NO3

Mol W.

: 255.27

Cat No.

: SA36103

Impurities, Ketorolac

Ketorolac EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391053-45-4

Mol F.

: C16H15NO4

Mol W.

: 285.29000000000002

Cat No.

: SA36104