An immunomodulatory drug, Leflunomide is used to treat rheumatoid arthritis and psoriatic arthritis. An inhibitor of enzyme dihydroorotate dehydrogenase which plays a key role in the synthesis of uridine monophosphate (rUMP), which is required for the synthesis of DNA and RNA. Reference standards of Leflunomide API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
Leflunomide
Catalogue No.:PA 12 08000
CAS :
Molecular Formula : C12H9F3N2O2
Molecular Weight : 270.21
4-(Trifluoromethyl)aniline
Catalogue No.:PA 12 08010
Molecular Formula : C7H6F3N
Molecular Weight : 161.12
Teriflunomide
Catalogue No.:PA 12 08020
5-Methyl-N-[3-(trifluoromethyl)-phenyl]isoxazole-4-carboxamide
Catalogue No.:PA 12 08030
5-Methylisoxazole-4-carboxylic Acid
Catalogue No.:PA 12 08040
Molecular Formula : C5H5NO3
Molecular Weight : 127.10
3-Methyl-N-[4-(trifluoromethyl)phenyl]isoxazole-4-carboxamide
Catalogue No.:PA 12 08050
Leflunomide otho-Isomer
Catalogue No.:PA 12 08060
5-Methyl-N-(4-methylphenyl)-isoxazole-4-carboxamide
Catalogue No.:PA 12 08070
Molecular Formula : C12 H12 N2 O2
Molecular Weight : 216.24
2-Cyano-N-(4-(trifluoromethyl)phenyl)acetamide
Catalogue No.:PA 12 08080
Molecular Formula : C10H7F3N2O
Molecular Weight : 228.17
3-Methylisoxazole-4-carboxylic Acid
Catalogue No.:PA 12 08510
Molecular Weight : 127.1
4-(Fluoromethyl)aniline
Catalogue No.:PA 12 08520
Molecular Formula : C7H8FN
Molecular Weight : 125.14
5-Methylisoxazole-3-carboxylic-d4 Acid
Catalogue No.:PA STI 062330
Molecular Formula : C5HD4NO3
Molecular Weight : 131.12
A77 1726-d4
Catalogue No.:PA STI 008740
Molecular Formula : C12H5D4F3N2O2
Molecular Weight : 274.23
5-Hydroxy Leflunomide-d4 (Metabolite M2)
Catalogue No.:PA STI 049540
Molecular Formula : C12H5D4F3N2O3
Molecular Weight : 290.23
Leflunomide-d4
Catalogue No.:PA STI 056310
Lenalidomide-d5
Catalogue No.:PA STI 056311
Molecular Formula : C13H8D5N3O3
Molecular Weight : 264.29
rac Lenalidomide-13C5
Catalogue No.:PA STI 056320
Molecular Formula : C813C5H13N3O3
Molecular Weight : 264.22
2-Cyano-3-hydroxy-N-(4-(trifluoromethyl)phenyl)but-2-enamide
Catalogue No.:PA 12 08530
Catalogue No.:PA IPIPRS 67 13
Molecular Formula :
Molecular Weight : NA
Leflunomide impurity A (Y0000487)
Catalogue No.:PA EPY0000487
Molecular Formula : NA
Leflunomide (Y0000654)
Catalogue No.:PA EPY0000654
Leflunomide for peak identification (Y0000674)
Catalogue No.:PA EPY0000674
Leflunomide (1356960)
Catalogue No.:PA USP1356960
Leflunomide Related Compound A (4-(trifluoromethyl)aniline) (1357045)
Catalogue No.:PA USP1357045
Leflunomide Related Compound B (2-Cyano-3-hydroxy-N-(4'-trifluoromethylphenyl)-crotone amide) (1357056)
Catalogue No.:PA USP1357056
Leflunomide Related Compound C (N-(3'-Trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide) (1357067)
Catalogue No.:PA USP1357067
3-Methylisoxazole-4-carboxylic Acid Ethyl Ester
Catalogue No.:PA 12 08540
Molecular Formula : C7H9NO3
Molecular Weight : 155.15
Ethyl 5-Methylisoxazole-4-carboxylate
Catalogue No.:PA 12 08550
5-Hydroxy leflunomide
Catalogue No.:PA 12 0081000
Molecular Formula : C12H9F3N2O3
Molecular Weight : 286.21
4-(Trifluoro- methyl)aniline Hydrochloride
Catalogue No.:PA 12 0080011
Molecular Formula : C7H7ClF3N
Molecular Weight : 197.59
2-Cyano-N-[2-(trifluoromethyl)phenyl]acetamide
Catalogue No.:PA 12 0081001
Leflunomide Impurity C (IMPL005)
Catalogue No.:PA IMPL005
Leflunomide (IPRSL001)
Catalogue No.:PA IPRSL001
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