Nitrosamine Impurities & Reference Standards

Spectrasynth Pharmachem supplies 179 certified nitrosamine impurity reference standards, complete with CAS numbers and molecular formulae. Custom synthesis is available — enquire for pricing, certificates of analysis (COA) and availability.

• Sitagliptin N-nitroso

  CAS No: NA · Molecular Formula: C6H6F3N5O

• Dexlansoprazole Nitroso Impurity

  CAS No: NA · Molecular Formula: C16H13F3N4O3S

• N-Nitrosomorpholine

  CAS No: 59-89-2 · Molecular Formula: C4H8N2O2

• N-Nitrosodipropylamine

  CAS No: 621-64-7 · Molecular Formula: C6H14N2O

• N-Nitrosodimethylamine

  CAS No: 62-75-9 · Molecular Formula: C2H6N2O

• N-Nitrosodiethylamine

  CAS No: 55-18-5 · Molecular Formula: C4H10N2O

• N-Nitroso Nintedanib Impurity (HCl Salt)

  CAS No: NA · Molecular Formula: C31H32N6O5, HCl

• N-Nitroso Rabeprazole-Impurity D

  CAS No: NA · Molecular Formula: C18H20N4O5S

• N-Nitroso Rabeprazole-Impurity E

  CAS No: NA · Molecular Formula: C15H14N4O3S

• 2-{[(4-chloro-3-methylpyridin-2-yl)methyl]sulfinyl}-1-nitroso-1H-benzimidazole

  CAS No: NA · Molecular Formula: C14H11ClN4O2S

• N-Nitroso Rabeprazole-Impurity A

  CAS No: NA · Molecular Formula: C18H20N4O5S

• N-Nitroso Rabeprazole sulfone N-oxide

  CAS No: NA · Molecular Formula: C18H20N4O6S

• N-Nitroso Rabeprazole Impurity B

  CAS No: NA · Molecular Formula: C18H20N4O3S

• N-Nitroso Rabeprazole Impurity C

  CAS No: NA · Molecular Formula: C14H10N4O4

• 1-nitroso-1H-benzimidazol-2-ol

  CAS No: NA · Molecular Formula: C7H5N3O2

• 1-nitroso-1H-benzimidazole-2-thiol

  CAS No: NA · Molecular Formula: C7H5N3OS

• 2-{[(4-methoxy-3-methylpyridin-2-yl)methyl]sulfanyl}-1-nitroso-1H-benzimidazole

  CAS No: NA · Molecular Formula: C15H14N4O2S

• N-Nitroso-rabeprazole

  CAS No: NA · Molecular Formula: C18H20N4O4S

• N-Nitroso Azathioprine

  CAS No: NA · Molecular Formula: C9H6N8O3S

• Albendazole N-Nitroso

  CAS No: NA · Molecular Formula: C12H14N4O3S

• Esomeprazole N-Nitroso-1

  CAS No: NA · Molecular Formula: C16H16N4O3S

• N-Nitrosodimethyl Impurity of Riociguat

  CAS No: NA · Molecular Formula: C21H20FN9O3

• N-Nitroso N-Desmethyl Riociguat

  CAS No: NA · Molecular Formula: C19H16FN9O3

• N-nitroso-tetracycline (N-nitroso Desmethyl tetracycline)

  CAS No: NA · Molecular Formula: C21H21N3O9

• Bilastine Nitroso Impurity 1

  CAS No: NA · Molecular Formula: C12H13N5O2

• N-Nitroso Deucravacitinib

  CAS No: NA · Molecular Formula: C20H18D3N9O4

• N-Nitroso Mavacamten

  CAS No: NA · Molecular Formula: C15H18N4O3

• N-Nitroso Pantoprazole

  CAS No: NA · Molecular Formula: C16H14F2N4O5S

• N-Nitroso Dexmedetomidine

  CAS No: NA · Molecular Formula: C13H15N3O

• N-Nitroso Ropivacaine

  CAS No: NA · Molecular Formula: C17H25N3O2

• N-Nitroso Apramycin

  CAS No: NA · Molecular Formula: C21H40N6O12

• N-Nitroso Guanine

  CAS No: NA · Molecular Formula: C5H4N6O2

• N,p-Dinitroso-N-methylaniline

  CAS No: 99-80-9 · Molecular Formula: C7H7N3O2

• 5-methoxy-1-nitroso 1H-benzo[d]imidazole-2-thiol

  CAS No: NA · Molecular Formula: C8H7N3O2S

• Clofazimine N-Nitroso

  CAS No: NA · Molecular Formula: C27H21Cl2N5O

• N-Nitroso Olanzapine

  CAS No: NA · Molecular Formula: C17H19N5OS

• Lenvatinib N-Nitroso impurity-1

  CAS No: NA · Molecular Formula: C21H18ClN5O5

• Lenvatinib N-Nitroso impurity-2

  CAS No: NA · Molecular Formula: C21H18ClN5O5

• Olanzapine Nitroso Impurity 2

  CAS No: NA · Molecular Formula: C12H8N4O3S

• Olanzapine Nitroso Impurity 4

  CAS No: NA · Molecular Formula: C12H10N4OS

• N-Nitroso Losartan

  CAS No: NA · Molecular Formula: C22H22ClN7O2

• N-Nitrosodibutylamine

  CAS No: 924-16-3 · Molecular Formula: C8H18N2O

• Sumatriptan N-nitroso sulphonamides

  CAS No: NA · Molecular Formula: C14H20N4O3S

• N-nitroso-rivaroxaban open-ring acid

  CAS No: NA · Molecular Formula: C19H19ClN4O7S

• Rivaroxaban Nitroso Impurity 1

  CAS No: 25413-76-7 · Molecular Formula: C8H10N2O2

• Rivaroxaban Nitroso Impurity 2

  CAS No: NA · Molecular Formula: C21H20N4O6

• Rivaroxaban Nitroso Impurity 5

  CAS No: NA · Molecular Formula: C13H16ClN3O4

• N-nitroso-rivaroxaban amide

  CAS No: NA · Molecular Formula: C18H19ClN4O5S

• Teriflunomide N-Nitroso

  CAS No: NA · Molecular Formula: C12H8F3N3O3

• N-Nitroso Chlorthalidone

  CAS No: NA · Molecular Formula: C14H10ClN3O5S

• N-Nitroso Famotidine-I

  CAS No: NA · Molecular Formula: C8H15N8O3S3

• N-Nitroso Famotidine-II

  CAS No: NA · Molecular Formula: C8H15N8O3S3

• N-Nitroso N-Desmethyl Rosuvastatin

  CAS No: NA · Molecular Formula: C21H25FN4O7S

• N-Nitroso Omeprazole Sulfide Impurity

  CAS No: NA · Molecular Formula: C17H18N4O3S

• N-Nitroso piperidine

  CAS No: 100-75-4 · Molecular Formula: C5H10N2O

• N-Nitroso Sugammadex

  CAS No: NA · Molecular Formula: C70H110N2O47S7

• Tadalafil Nitroso Impurity 1

  CAS No: NA · Molecular Formula: C22H18N4O5

• Tadalafil Nitroso Impurity 3

  CAS No: NA · Molecular Formula: C20H17N3O5

• N-nitroso Tadalafil

  CAS No: NA · Molecular Formula: C22H18N4O5

• N-Nitroso Tadalafil Impurity 4

  CAS No: NA · Molecular Formula: C20H17N3O5

• N-Nitroso Tadalafil Chloroacetyl Impurity

  CAS No: NA · Molecular Formula: C22H18ClN3O6

• N,N-Dinitroso Almotriptan Impurity

  CAS No: NA · Molecular Formula: C16H21N5O4S

• N-Nitrosomethylphenylamine

  CAS No: 614-00-6 · Molecular Formula: C7H8N2O

• N-Nitrosoisopropylethyl Amine

  CAS No: 16339-04-1 · Molecular Formula: C5H12N2O

• N- Nitroso Nilotinib N- Oxide

  CAS No: NA · Molecular Formula: C28H21F3N8O3

• N- Nitroso Nicardipine

  CAS No: NA · Molecular Formula: C26H28N4O7

• N-Nitroso Maribavir Impurity

  CAS No: NA · Molecular Formula: C15H18Cl2N4O5

• Omeprazole N-Nitroso

  CAS No: NA · Molecular Formula: C17H18N4O4S

• N-Nitroso dolutegravir impurity

  CAS No: NA · Molecular Formula: C20H18F2N4O6

• Apixaban Nitroso Impurity 1

  CAS No: NA · Molecular Formula: C11H12ClN3O4

• N-Nitroso-7-monomethylamino-6-deoxytetracycline

  CAS No: NA · Molecular Formula: C22H24N4O8

• 4-Nitrophenyl Acetate

  CAS No: 830-03-5 · Molecular Formula: C8H7NO4

• N-Nitroso Protriptyline

  CAS No: 55855-42-0 · Molecular Formula: C19H20N2O

• N-nitroso-terbutaline

  CAS No: NA · Molecular Formula: C12H18N2O4

• Nitroso Amlodipine

  CAS No: NA · Molecular Formula: C29H31ClN4O8

• Nitroso Phthaloyl Amlodipine

  CAS No: NA · Molecular Formula: C29H27ClN2O8

• Amlodipine Nitroso Impurity

  CAS No: NA · Molecular Formula: C20H24ClN3O6

• N-Nitroso Ruxolitinib

  CAS No: NA · Molecular Formula: C17H17N7O

• Erlotinib Nitroso Impurity

  CAS No: NA · Molecular Formula: C22H22N4O5

• Upadacitinib Nitroso impurity 1

  CAS No: NA · Molecular Formula: C17H18F3N7O2

• N-Nitroso Esomeprazole

  CAS No: NA · Molecular Formula: C16H16N4O3S

• N-Nitroso Nintedanib impurity

  CAS No: NA · Molecular Formula: C31H32N6O5

• Olmesartan Nitroso Impurity 1

  CAS No: NA · Molecular Formula: C29H29N7O7

• N-Nitroso Oseltamivir

  CAS No: NA · Molecular Formula: C14H22N2O4

• N-Nitroso Amoxicillin Impurity

  CAS No: NA · Molecular Formula: C24H25N5O8S

• N-Nitroso Azithromycin

  CAS No: NA · Molecular Formula: C37H69N3O13

• N-Nitroso Mercaptopurine Impurity 1

  CAS No: NA · Molecular Formula: C5H3N5OS

• N-Nitroso Desmethyl Dextromethorphan

  CAS No: NA · Molecular Formula: C17H22N2O2

• Relugolix Nitroso Impurity 1

  CAS No: NA · Molecular Formula: C28H24F2N8O6S

• N-Nitroso Telmisartan - Impurity A

  CAS No: NA · Molecular Formula: C19H19N5O

• Telmisartan N-Nitroso N-Desmethyl Impurity

  CAS No: NA · Molecular Formula: C32H27N5O3

• N-Nitroso Sumatriptan

  CAS No: NA · Molecular Formula: C14H20N4O3S

• N-Nitroso Risperidone

  CAS No: 2416230-38-9 · Molecular Formula: C12H12FN3O2

• N-Nitroso Desloratadine

  CAS No: 1246819-22-6 · Molecular Formula: C19H18ClN3O

• N-Nitroso Cetirizine - Impurity A

  CAS No: 2005-04-1 · Molecular Formula: C17H18ClN3O

• N-nitroso Cyclophosphamide

  CAS No: NA · Molecular Formula: C7H14Cl2N3O3P

• N-Nitroso Salbutamol (N-Nitroso Albuterol)

  CAS No: NA · Molecular Formula: C13H20N2O4

• N-Nitroso-Cinacalcet

  CAS No: NA · Molecular Formula: C22H21F3N2O

• N-Nitroso Trimetazidine

  CAS No: 92432-50-3 · Molecular Formula: C14H21N3O4

• N-Nitroso-Felodipine

  CAS No: NA · Molecular Formula: C18H18Cl2N2O5

• N-Nitroso Levofloxacin

  CAS No: 1152314-62-9 · Molecular Formula: C17H17FN4O5

• N-Nitroso Pramipexole

  CAS No: NA · Molecular Formula: C₁₀H₁₆N₄OS

• N-Nitroso Vortioxetine

  CAS No: NA · Molecular Formula: C18H21N3OS

• N-Nitroso Tamsulosin Impurity

  CAS No: 2892260-31-8 · Molecular Formula: C20H27N3O6S

• N-Nitroso Mirabegron

  CAS No: NA · Molecular Formula: C21H23N5O3S

• N-Nitroso Ramipril

  CAS No: NA · Molecular Formula: C23H31N3O6

• N-Nitroso Vildagliptin

  CAS No: NA · Molecular Formula: C17H24N4O3

• N-nitroso tigecycline

  CAS No: NA · Molecular Formula: C29H38N6O9

• N-nitroso-desmethyl-tigecycline-1

  CAS No: NA · Molecular Formula: C28H36N6O9

• N-nitroso-desmethyl-tigecycline-2

  CAS No: NA · Molecular Formula: C28H36N6O9

• N-Nitroso Desmethyl Minocycline

  CAS No: NA · Molecular Formula: C22H24N4O8

• 2-Methyl-4-nitro-1-nitroso-1H-imidazole

  CAS No: NA · Molecular Formula: C₃H₂N₄O₃

• 2-Methyl-5-nitro-1-nitroso-1H-imidazole

  CAS No: NA · Molecular Formula: C₄H₄N₄O₃

• N-Nitroso Nifedipine

  CAS No: NA · Molecular Formula: C17H17N3O7

• N-nitroso-N-Desmethyl Venlafaxine

  CAS No: NA · Molecular Formula: C₁₆H₂₄N₂O₃

• 1-Nitroso-4-Methyl-Piperazine (NMPP)

  CAS No: 16339-07-4 · Molecular Formula: C5H11N3O

• 2-(1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-4-nitroisoindoline-1,3-dione

  CAS No: 253168-82-0 · Molecular Formula: C20H20N2O8S

• 4-Nitro Apremilast

  CAS No: 2095036-40-9 · Molecular Formula: C20H20N2O8S

• N-Nitroso Apremilast

  CAS No: NA · Molecular Formula: C22H23N3O8S

• N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)-N-nitrosoacetamide

  CAS No: NA · Molecular Formula: C10H6N2O5

• (S)-2-(1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-5-nitroisoindoline-1,3-dione

  CAS No: NA · Molecular Formula: C20H20N2O8S

• N-(3-Ethoxy-4-methoxybenzyl)-N-(1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl) nitrous amide

  CAS No: NA · Molecular Formula: C22H30N2O7S

• N-Nitrosoatenolol

  CAS No: 134720-04-0 · Molecular Formula: C14H21N3O4

• 1-(3,4-Dimethoxy-5-nitrophenyl)ethanone

  CAS No: 134610-32-5 · Molecular Formula: C10H11NO5

• N-Nitroso-Atomoxetine

  CAS No: NA · Molecular Formula: C17H20N2O2

• Candensartan N-Nitroso - Impurity G

  CAS No: NA · Molecular Formula: C₂₄H₁₉N₇O₄

• Candensartan N-Nitroso - Impurity H

  CAS No: NA · Molecular Formula: C₂₂H₁₆N₄O₅

• N-Nitroso-Nortriptyline

  CAS No: 55855-42-0 · Molecular Formula: C19H20N2O

• N-Nitroso Ertapenem

  CAS No: NA · Molecular Formula: C22H24N4O8S

• N-nitroso Lansoprazole

  CAS No: NA · Molecular Formula: C16H13F3N4O3S

• N-Nitroso N-Despropyl Ropivacaine

  CAS No: NA · Molecular Formula: C14H19N3O2

• N-Nitroso Venetoclax Impurity 9

  CAS No: NA · Molecular Formula: C33H34ClN5O4

• N-Nitroso Venetoclax Impurity 13

  CAS No: NA · Molecular Formula: C47H51ClN8O9S

• N-Nitrosophenothiazine

  CAS No: 36144-72-6 · Molecular Formula: C12H8N2OS

• N-Nitroso Bendroflumethiazide

  CAS No: NA · Molecular Formula: C15H13F3N4O5S2

• NDSRI Imp No. -15

  CAS No: NA · Molecular Formula: C27H29ClN6O

• NDSRI Imp No. -16

  CAS No: NA · Molecular Formula: C31H30N6O4

• NDSRI Imp No. -13

  CAS No: NA · Molecular Formula: C51H55N11O6

• N-Nitroso Norhyoscine

  CAS No: 55855-46-4 · Molecular Formula: C16H18N2O5

• N-Nitroso Theophylline

  CAS No: NA · Molecular Formula: C7H7N5O3

• N-Nitroso Dimenhydrinate

  CAS No: NA · Molecular Formula: C7H6ClN5O3

• N-Nitroso Azithromycin Impurity A

  CAS No: NA · Molecular Formula: C37H69N3O13

• N-Nitroso Azithromycin Impurity I

  CAS No: NA · Molecular Formula: C37H69N3O13

• NDSRI Imp No. -14

  CAS No: NA · Molecular Formula: C51H54N12O7

• N-Nitroso Diazoxide impurity

  CAS No: NA · Molecular Formula: C8H6ClN3O3S

• N-Nitroso Sulfonamide Urea-2 impurity

  CAS No: NA · Molecular Formula: C7H4ClN3O4S

• Di N-Nitroso Sulfonamide Urea impurity

  CAS No: NA · Molecular Formula: C7H3ClN5O5S

• N-Nitroso Deschloro Diazoxide impurity

  CAS No: NA · Molecular Formula: C8H7N3O3S

• N-Nitroso Urea impurity

  CAS No: NA · Molecular Formula: C7H6ClN3O2

• N-Nitroso N-Acetyl impurity

  CAS No: NA · Molecular Formula: C8H8ClN3O4S

• N-Nitroso Sulfonamide Urea-1 impurity

  CAS No: NA · Molecular Formula: C7H4ClN3O4S

• N-nitroso carbamimidamido

  CAS No: NA · Molecular Formula: C6H13N5O3

• N''-nitroso carbamimidamido

  CAS No: NA · Molecular Formula: C6H13N5O3

• N,N''-dinitroso carbamimidamido

  CAS No: NA · Molecular Formula: C6H12N6O4

• N-nitroso Cariprazine

  CAS No: NA · Molecular Formula: C21H31Cl2N5O2

• N-Nitroso Ondansetron Impurity H

  CAS No: NA · Molecular Formula: C17H16N4O2

• 4-Hydroxy-3,5-Dinitro-N-methylphthalimide

  CAS No: 99776-64-4 · Molecular Formula: C9H5N3O7

• Alectinib 4-Ethyl Nitroso

  CAS No: NA · Molecular Formula: C30H35N5O4

• Alectinib 5 Nitroso

  CAS No: NA · Molecular Formula: C30H33N5O3

• Alectinib Nitroso 3 Iodo

  CAS No: NA · Molecular Formula: C25H26IN3O3

• Trametinib Nitroso Impurity 5

  CAS No: NA · Molecular Formula: C24H20FIN6O4

• Trametinib Nitroso Impurity 3

  CAS No: NA · Molecular Formula: C21H22N6O5

• Trametinib Nitroso Impurity 4

  CAS No: NA · Molecular Formula: C26H23FN6O5

• N Nitroso Torasemide

  CAS No: NA · Molecular Formula: C16H19N5O4S

• Alectinib Nitroso Impurity 4

  CAS No: NA · Molecular Formula: C34H43N5O4

• N-Nitroso lactose adduct of Dexamfetamine

  CAS No: NA · Molecular Formula: C21H32N2O11

• N-Nitrosodibenzylamine

  CAS No: 5336-53-8 · Molecular Formula: C14H14N2O

• N-Nitroso Cytarabine Impurity B

  CAS No: NA · Molecular Formula: C9H11N3O7

• N-Nitroso Cytarabine Impurity C

  CAS No: NA · Molecular Formula: C4H4N4O2

• N-Nitroso Daunorubicin

  CAS No: NA · Molecular Formula: C27H28N2O11

• 3-Nitro-N-methyl phthalimide

  CAS No: 2593-81-9 · Molecular Formula: C9H6N2O4

• N2-Nitroso Guanfacine

  CAS No: NA · Molecular Formula: C9H8Cl2N4O2

• N-nitroso sulfasalazine Impurity J

  CAS No: NA · Molecular Formula: C11H10N4O3S

• N-nitroso-2-(Cocoamino) ethanol

  CAS No: NA · Molecular Formula: C14H30N2O2

• N-Nitroso Paracetamol - Impurity M

  CAS No: NA · Molecular Formula: C12H10N2O3

• N-nitroso-4-Hydroxydiphenylamine

  CAS No: 69026-93-3 · Molecular Formula: C12H10N2O2

• N-nitroso-4-Hydroxy-4'-aminodiphenaylamine

  CAS No: NA · Molecular Formula: C12H11N3O2

• N-Nitroso sulfasalazine

  CAS No: NA · Molecular Formula: C22H18N6O5S2

• N-Nitroso-Nornoscapine

  CAS No: NA · Molecular Formula: C21H20N2O8