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Impurity reference standards
Search by API name, impurity name or CAS number. Open a product to see structures and CAS details, then add items to a single enquiry.
70product families
98impurities in stock
51nitrosamines
Alogliptin Impurities1 impurity
Ambroxol HCl Impurities1 impurity · 1 working standard
Aprepitant Impurities2 impurities
Azacitidine Impurities1 impurity · 2 working standards
2-Azahypoxanthine1 impurity
Azithromycin Impurities1 impurity
Bepotastine Impurities1 impurity
Bortezomib Impurities3 impurities
Bromfenac Impurities3 impurities
Capecitabine Impurities1 impurity · 1 working standard
Cetirizine Impurities1 impurity
Cyanotemozolomide1 impurity
Dacarbazine Impurities1 impurity
Deferasirox Impurities1 impurity · 1 working standard
Dihydroartemisinin1 impurity
Dihydroxy Impurity1 impurity
Donepezil Impurities1 impurity
Dorzolamide Impurities1 impurity · 1 working standard
Duloxetine Impurities1 impurity · 1 nitrosamine
Erlotinib Impurities1 working standard
Escitalopram Keto Oxalate1 impurity · 1 nitrosamine
Ezetimibe Impurities1 impurity
Famotidine Impurities4 impurities
Finasteride Impurities1 impurity · 1 working standard
Gabapentin Impurities1 impurity
Gemcitabine Impurities1 impurity · 1 working standard · 1 intermediate
Idelalisib Impurities1 impurity
Imatinib Impurities1 impurity · 1 working standard · 2 intermediates
Irinotecan Impurities1 impurity · 2 working standards
Lanthanum Carbonate Impurities3 impurities
Leflunomide Impurities1 impurity · 1 working standard
Levodropropizine Impurities1 impurity
Linezolid Impurities4 impurities
MegestrolDetails on request
Melamine ImpuritiesDetails on request
Mesalamine Impurities1 impurity
Metoprolol Impurities1 impurity · 1 nitrosamine
Monochloro Impurity1 impurity
Montelukast Impurities2 impurities
Nepafenac Impurities2 impurities
Nilotinib Impurities3 impurities · 2 working standards · 2 intermediates
Nimesulide Impurities1 impurity · 1 working standard
Nitrosamine Impurities51 nitrosamines
Norfloxacin Impurities1 impurity
Omeprazole Impurities5 impurities · 2 intermediates
Oxaliplatin Impurities4 impurities · 1 working standard
Pantoprazole Impurities2 impurities · 2 intermediates
Pemetrexed Disodium1 impurity
Pentoxifylline Impurities1 impurity
Phenobarbitone (WS)Details on request
Pirfenidone Impurities2 impurities · 1 working standard
Pregabalin Impurities2 impurities · 1 working standard
Ramipril Impurities1 impurity · 1 nitrosamine
Rizatriptan Impurities1 impurity · 1 nitrosamine
Sildenafil Citrate Impurities3 impurities · 1 nitrosamine
Sitagliptin Impurities1 impurity · 1 nitrosamine · 2 intermediates
Sodium PicosulphateDetails on request
Sulfone Impurity1 impurity
Sunitinib Impurities1 impurity · 1 working standard
Telmisartan Impurities1 impurity
Temozolomide Impurities3 impurities · 1 working standard
Ten ImpuritiesDetails on request
Teneligliptin Impurities2 impurities
Ticlopidine Impurities1 impurity
Tioconazole Impurities4 impurities
trans-Abacavir1 impurity · 1 working standard
Valsartan Impurities1 impurity
Venlafaxine Impurities1 impurity · 1 working standard
Zolpidem Tartrate Impurities1 impurity
Zolpidic Acid1 impurity
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