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API Name Common Name / Chemical Name CAS No
Nitrosamines N-Nitrosodimethyl amine (NDMA) 62-75-9
Nitrosamines N-Nitrosodiethyl amine(NDEA) 55-18-5
Nitrosamines N-Nitrosodiisopropyl amine (NDIPA) 601-77-4
Nitrosamines N-Nitrosodibutyl amine(NDBA) 924-16-3
Nitrosamines N-Nitrosomethylphenylamine (NMPA) 614-00-6
Nitrosamines N-Nitrosoisopropylethylamine (NIPEA) 16339-04-1
Nitrosamines N-Nitroso-N-methyl-4-aminobutyric acid (NMBA) 61445-55-4
Nitrosamines .N-Nitrosodipropylamine (NDPA) 621-64-7
Nitrosamines N-Nitrosoethylmethylamine (NEMA) 10595-95-6
API Name Common Name / Chemical Name CAS No
Amlodipine Amlodipine Imp- A(Phthalimido amlodipine) 88150-62-3
Amlodipine Amlodipine imp- B 721958-72-1
Amlodipine Amlodipine imp- D 113994-41-5
Amlodipine Amlodipine imp- E 140171-65-9
Amlodipine Amlodipine imp- G 43067-01-2
Aripiprazole Impurity-A EP(7-Hydroxy-3,4-dihydro carbostyril) 22246-18-0
Aripiprazole Impurity- C (EP)(2-Chloro impurity of Aripiprazole) 203395-81-7
Aripiprazole Impurity- D (EP)(3-Chloro impurity of Aripiprazole) 203395-82-8
Aripiprazole Impurity-E (EP)(Dehydro Aripiprazole) 129722-25-4
Aripiprazole Impurity-G Aripiprazole Dimer IMP 41797986-18-5
Aripiprazole Aripiprazole Related comp B 1424858-02-5
Aripiprazole Armodafinil methyl Impurity -
Betahistine Dihydrochloride Betahistine EP- Imp-C (N-methyl-2-(pyridin-2-yl)-N-(2-(pyridin-2-yl)ethyl)ethan-1-amine) 2095467-43-7
Brimonidine Tartrate 5-bromo-6-aminoquinoxaline (Imp B) 50358-63-9
Brimonidine Tartrate 6-aminoquinoxaline (Imp C) 6298-37-9
Brimonidine Tartrate 1,2,4-Triaminobenzene HCl 615-47-4
Brimonidine Tartrate Brimonidine Dimer -
Brimonidine Tartrate Desbromo Brimonidine 91147-43-2
Bupropion Hydroxy Bupropion 357399-43-0
Bupropion Impurity E (EP) 10557-17-2
Bupropion 2-Amino impurity 119802-69-6
Bupropion 2-chlorobupropion -
Bupropion 4-chlorobupropion 1346598-72-8
Bupropion 5’-chlorobupropion 1346603-00-6
Bupropion Bupropion related compound B 1049718-43-5
Cetirizine Cetirizine Impurity B (EP) 942132-30-1
Cetirizine Cetirizine Impurity C (EP) 83881-59-8
Cetirizine Cetirizine Impurity D (EP) Dimer 346451-15-8
Cetirizine Cetirizine Impurity E (EP) 682323-77-9
Cetirizine Cetirizine Impurity F (EP) 83881-53-2
Cetirizine Cetirizine Impurity G (EP) 164726-80-1
Cetirizine Methyl ester of Cetirizine (USP) 83881-46-3
Cetirizine Ethyl ester of Cetirizine (Cetrizine rel. comp. A, USP) 246870-46-2
Cetirizine 3-chloro impurity of Cetirizine 1232460-29-5
Desvenlafaxine Desvenlafaxine dehydrated impurity 1346600-38-1
Desvenlafaxine Donepezil Related compound-A 145546-80-1
Desvenlafaxine Hydroxy Donepezil 197010-20-1
Desvenlafaxine O-Desmethyl impurity 120013-56-1
Desvenlafaxine Donepezil pyridine dehydro impurity 4803-74-1
Dronedarone N-Desbutyl Dronedarone 141626-35-9
Etoricoxib Etoricoxib-N-Oxide 325855-71-8
Ezetimibe Ezetimibe (R,R,S) isomer ((3R,4S)-1-(4-fluorophenyl)-3-((R)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one) 163222-33-1
Linezolid Linezolid-N-Oxide 189038-36-6
Paliperidone Keto Paliperidone 1189516-65-1
Paliperidone Paliperidone hydroxyl benzoyl analog USP 152542-03-5
Paliperidone Paliperidone N-Oxide (Paliperidone Related compound-D, USP) 761460-08-6
Paliperidone Palmitate Paliperidone Myristate 1172995-11-7
Paliperidone Palmitate Paliperidone Stearate 1172995-13-9
Paliperidone Palmitate Paliperidone Palmitate N-Oxide 1404053-60-6
Pioglitazone 5-[[4-[2-(5-Ethyl-2-pyridinyl]ethoxy]phenyl]methyl]-2,4-thiazolidinedione N-oxide (Pioglitazone-N-Oxide) 145350-09-0
Prasugrel Prasugrel Diketo impurity (1-cyclopropyl-2-(2-fluorophenyl)ethane-1,2-dione) 1391054-37-7
Risperidone 9-Hydroxy Risperidone 144598-75-4
Risperidone Risperidone N-Oxide 832747-55-4
Ropinirole Ropinirole N-Oxide 1076199-41-1
Ropinirole N-Methoxy Ropinirole 1391051-91-4
Ropinirole Propylidene Ropinirole Impurity-C (EP) 249622-62-6
Ropinirole Oxo impurity of Ropinirole 102842-51-3
Ropinirole Monopropyl Ropinirole 173990-76-6
Rivaroxaban Rivaroxaban Enantiomer (R-Isomer) 865479-71-6
Rivaroxaban Deschloro Rivaroxaban 1415566-28-7
Rivaroxaban Rivaroxaban Aminomethyl Base 446292-10-0
Saxagliptin Keto Saxagliptin N/A
Saxagliptin Amide amide impurity of Saxagliptin N/A
Saxagliptin Deoxy Saxagliptin 361441-98-7
Saxagliptin N-Formyl Saxagliptin N/A
Sitagliptin 4-Desfluoro Sitagliptin phosphate 1345822-87-8
Sitagliptin 5-Desfluoro Sitagliptin phosphate 1345822-86-7
Tadalafil EP-Imp-A ((6R,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino
[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione)
171596-27-3
Tadalafil EP-Imp-B ((6S,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino
[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione)
629652-72-8
Tadalafil EP-Imp-C ((6S,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino
[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione)
171596-28-4
Tamsulosin Tamsulosin Imp. B (EP) 112101-81-2
Tamsulosin Tamsulosin Imp. C (EP) 2244986-82-9(base)
Tamsulosin Tamsulosin Imp. D (EP) Methoxy analogue 80223-96-7
Tamsulosin Tamsulosin Imp. G (EP) 106463-19-8
Tamsulosin Tamsulosin Imp. H (EP) Des- sulphonamide 1329611-47-3
Tamsulosin Tamsulosin Imp. I (EP) 3259-03-8
Valacyclovir N-Methyl Valacyclovir Impurity-C (EP) 1346617-39-7
Valacyclovir N-Ethyl Valacyclovir Impurity-D (EP) 1346747-69-0
Valacyclovir Valacyclovir Rel. Comp-F (USP) 86150-61-0
Valacyclovir Valacyclovir Impurity-H (EP) 84499-63-8
Valacyclovir Valacyclovir Impurity-I (EP) 102728-64-3
Valacyclovir Valacyclovir Impurity-J (EP) 142963-63-1
Valacyclovir Valacyclovir Impurity-M (EP) 847670-62-6
Valacyclovir D-Valacyclovir 124832-28-6
Vildagliptin Vildagliptin acid impurity 565453-40-9
Vildagliptin Vildagliptin Amide 565453-39-6
Vildagliptin Vildagliptin R isomer 1036959-27