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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

N2-Trityl Olmesartan Ethyl Ester

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Out of Stock

CAS No.

: 172875-59-1

Mol F.

: C₄₅H₄₄N₆O₃

Mol W.

: 716.87

Cat No.

: SA17746

Impurities, Olmesartan Medoxomil

N2-Trityl Olmesartan Lactone

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Out of Stock

CAS No.

: 1048948-15-7

Mol F.

: C₄₃H₃₈N₆O₂

Mol W.

: 670.8

Cat No.

: SA17722

Impurities, Olmesartan Medoxomil

N2-Trityl Olmesartan Medoxomil Methyl Ether

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Out of Stock

CAS No.

Mol F.

: C₄₉H₄₆N₆O₆

Mol W.

: 814.92

Cat No.

: SA17747

Impurities, Olmesartan Medoxomil

N2-Trityl Olmesartan Methyl Ketone

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Out of Stock

CAS No.

Mol F.

: C₄₄H₄₂N₆O₂

Mol W.

: 686.84

Cat No.

: SA17748

Impurities, Valsartan

N2-Trityl Valsartan Benzyl Ester

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Out of Stock

CAS No.

Mol F.

: C50H49N5O3

Mol W.

: 767.95

Cat No.

: SA33315

Impurities, Valsartan

N2-Trityl Valsartan Methyl Ester

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Out of Stock

CAS No.

: 883223-10-7

Mol F.

: C44H45N5O3

Mol W.

: 691.86

Cat No.

: SA33312

Impurities, Valsartan

N2-Trityl Valsartan R-Isomer

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C43H43N5O3

Mol W.

: 677.83

Cat No.

: SA33316

Gemcitabine, Impurities

N4-Acetylcytosine

Please enquire for price & pack size

Out of Stock

CAS No.

: 14631-20-0

Mol F.

: C6H7N3O2

Mol W.

: 153.13999999999999

Cat No.

: SA44506

Hydrochlorothiazide, Impurities

N4-Hydroxymethyl Hydrochlorothiazide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1216599-78-8

Mol F.

: C₈H₁₀ClN₃O₅S₂

Mol W.

: 327.77

Cat No.

: SA11206

Impurities, Palbociclib

N5-(2-aminoethyl)pyridine-2,5-diamine

Please enquire for price & pack size

Out of Stock

CAS No.

: 1248105-96-5

Mol F.

: C7H12N4

Mol W.

: 152.2

Cat No.

: SA40419

Impurities, Naloxone

Naloxone HCl – API

Please enquire for price & pack size

Out of Stock

CAS No.

: 357-08-4; 465-65-6(Free Base)

Mol F.

: C19H21NO4

Mol W.

: 327.37

Cat No.

: SA45100

Impurities, Nandrolone

Nandrolone phenylpropionate

Please enquire for price & pack size

Out of Stock

CAS No.

: 62-90-8

Mol F.

: C27H34O3

Mol W.

: C27H34O3

Cat No.

: SA16306

Impurities, Naproxen

Naproxen EP Impurity J

$125.00 25 mg

Out of Stock

CAS No.

: 21388-17-0

Mol F.

: C13H14O

Mol W.

: 186.25

Cat No.

: SA20415

Impurities, Naproxen

Naproxen EP Impurity O

$125.00 25 mg

Out of Stock

CAS No.

: 156967-24-7

Mol F.

: C17H20O3

Mol W.

: 272.34

Cat No.

: SA20414

Impurities, Naratriptan

Naratriptan 2-Carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 874583-40-1

Mol F.

: C₁₈H₂₅N₃O₄S

Mol W.

: 379.47

Cat No.

: SA30806

Impurities, Naratriptan

Naratriptan Hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 121679-13-8 (Base free); 143388-64-1 (HCl salt)

Mol F.

: C17H26ClN3O2S

Mol W.

: 371.93

Cat No.

: SA30800

Impurities, Naratriptan

Naratriptan Impurity C

$1,550.00 25 mg

Out of Stock

CAS No.

: 1346604-16-7

Mol F.

: C31H41N5O2S

Mol W.

: 547.75

Cat No.

: SA30803

Impurities, Naratriptan

Naratriptan Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 1346600-26-7

Mol F.

: C20H33ClN4O4S2

Mol W.

: 493.08

Cat No.

: SA30804

Impurities, Naratriptan

Naratriptan Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: 2144776-33-8

Mol F.

: C20H27ClN4O4S2

Mol W.

: 487.04

Cat No.

: SA30805

Impurities, Naratriptan

Naratriptan N-Methiodide

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H28IN3O2S

Mol W.

: 477.4

Cat No.

: SA30808

Impurities, Naratriptan

Naratriptan Pyridinium Iodide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1638617-36-3 (Free base)

Mol F.

: C17H20IN3O2S

Mol W.

: 457.33

Cat No.

: SA30812

Impurities, Naratriptan

Naratriptan pyridinium salt

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H20ClN3O2S

Mol W.

: 365.88

Cat No.

: SA30809

Impurities, Nebivolol

Nebivolol

Please enquire for price & pack size

Out of Stock

CAS No.

: 99200-09-6

Mol F.

: C₂₂H₂₅F₂NO₄

Mol W.

: 405.44

Cat No.

: SA14700

Impurities, Neomycin

Neomycin Impurity 5 (N-1 Compound)

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C24H37N3O11

Mol W.

: 543.56

Cat No.

: SA51409

Impurities, Neomycin

Neomycin Sulfate Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: 7542-37-2

Mol F.

: C23H45N5O14

Mol W.

: 615.63

Cat No.

: SA51410

Impurities, Neomycin

Neomycin Sulfate Impurity E (N-1 Compound)

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C48H85N5O24

Mol W.

: 1116.21

Cat No.

: SA51411

Impurities, Neostigmine

Neostigmine Bromide

Please enquire for price & pack size

Out of Stock

CAS No.

: 114-80-7

Mol F.

: C12H19BrN2O2

Mol W.

: 303.2

Cat No.

: SA19706

Impurities, Neostigmine

Neostigmine Methyl Sulfate

Please enquire for price & pack size

Out of Stock

CAS No.

: 51-60-5

Mol F.

: C13H22N2O6S

Mol W.

: 334.39

Cat No.

: SA19707

Impurities, Nicardipine

Nicardipine

Please enquire for price & pack size

Out of Stock

CAS No.

: 55985-32-5

Mol F.

: C26H29N3O6

Mol W.

: 479.52

Cat No.

: SA36200

Impurities, Nicardipine

Nicardipine Bis Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 71791-90-7

Mol F.

: C35H40N4O6

Mol W.

: 612.71

Cat No.

: SA36204

Impurities, Nicardipine

Nicardipine Dehydro Carboxylic Acid Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 64603-72-1

Mol F.

: C16H14N2O6

Mol W.

: 330.29

Cat No.

: SA36205

Impurities, Nicardipine

Nicardipine Dehydro Dimethyl Diester

Please enquire for price & pack size

Out of Stock

CAS No.

: 76258-20-3

Mol F.

: C17H16N2O6

Mol W.

: 344.32

Cat No.

: SA36206

Impurities, Nicardipine

Nicardipine Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 87625-92-1

Mol F.

: C15H15NO5

Mol W.

: 289.28

Cat No.

: SA36211

Impurities, Nicardipine

Nicardipine Monoester Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C15H16N2O4

Mol W.

: 288.3

Cat No.

: SA36209

Impurities, Nicardipine

Nicardipine N-Desbenzyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 58368-87-9

Mol F.

: C19H23N3O6

Mol W.

: 389.4

Cat No.

: SA36208

Impurities, Nicardipine

Nicardipine Nitroso Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C26H28N4O7

Mol W.

: 508.5

Cat No.

: SA36212

Impurities, Nicardipine

Nicardipine O-Desmethyl

Please enquire for price & pack size

Out of Stock

CAS No.

: 123973-71-7

Mol F.

: C25H25N3O6

Mol W.

: 463.48

Cat No.

: SA36207

Impurities, Nicotine

Nicotine

Please enquire for price & pack size

Out of Stock

CAS No.

: 54-11-5

Mol F.

: C10H14N2

Mol W.

: 162.23

Cat No.

: SA32200

Impurities, Nicotine

Nicotine EP Impurity G

Please enquire for price & pack size

Out of Stock

CAS No.

: 494-52-0(Base);15251-47-5(Salt)

Mol F.

: C10H14N2

Mol W.

: 162.23

Cat No.

: SA32207

Impurities, Nilotinib

Nilotinib

Please enquire for price & pack size

Out of Stock

CAS No.

: 641571-10-0

Mol F.

: C‚ˆH‚‚FƒN‡O

Mol W.

: 529.52

Cat No.

: SA40600

Impurities, Nilotinib

Nilotinib 2-Pyridinyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 66521-65-1

Mol F.

: C9H8N4

Mol W.

: 172.19

Cat No.

: SA40607

Impurities, Nilotinib

Nilotinib 3-Pyridinyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 66521-66-2

Mol F.

: C‰HˆN„

Mol W.

: 173.19

Cat No.

: SA40608

Impurities, Nilotinib

Nilotinib Amide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 851137-91-2

Mol F.

: C‡H…N…O

Mol W.

: 305.33

Cat No.

: SA40601

Impurities, Nilotinib

Nilotinib Amino Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 641571-11-1

Mol F.

: C11H10F3N3

Mol W.

: 241.21

Cat No.

: SA40609

Impurities, Nilotinib

Nilotinib Bromo Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 54962-75-3

Mol F.

: C‡H…BrFƒN

Mol W.

: 240.02

Cat No.

: SA40610

Impurities, Nilotinib

Nilotinib Carboxylic Acid Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 641569-94-0

Mol F.

: C17H14N4O2

Mol W.

: 306.32

Cat No.

: SA40606

Impurities, Nilotinib

Nilotinib EP Impurity E; Desmethylimidazole Nilotinib Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2119583-26-3

Mol F.

: C27H20F3N7O

Mol W.

: 515.5

Cat No.

: SA40612

Impurities, Nilotinib

Nilotinib EP Impurity H; Nilotinib Regio Isomer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 641571-15-5

Mol F.

: C28H22F3N7O

Mol W.

: 529.52

Cat No.

: SA40611

Impurities, Nilotinib

Nilotinib Ethylimidazole Analog

Please enquire for price & pack size

Out of Stock

CAS No.

: 21195813-24-1

Mol F.

: C29H24F3N7O

Mol W.

: 543.54

Cat No.

: SA40602

Impurities, Nilotinib

Nilotinib Formyl Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H14N4O

Mol W.

: 290.32

Cat No.

: SA40603