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Pharmaceutical Reference Standards

Leflunomide

Picture of Leflunomide
CAT No: SZ-L032001
CAS No: 75706-12-6
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: Under Synthesis
SZ-L032001
CAS No:75706-12-6
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: Under Synthesis

Leflunomide EP Impurity A 

Picture of Leflunomide EP Impurity A 
CAT No: SZ-L032002
CAS No: 455-14-1
Mol.F. : C7H6F3N
Mol.Wt. : 161.1
Inv. Status: In Stock
SZ-L032002
CAS No:455-14-1
Mol.F.: C7H6F3N
Mol.Wt.: 161.1
Inv. Status: In Stock

Leflunomide EP Impurity B

Picture of Leflunomide EP Impurity B
CAT No: SZ-L032003
CAS No: 163451-81-8
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: In Stock
SZ-L032003
CAS No:163451-81-8
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: In Stock

Leflunomide EP Impurity C

Picture of Leflunomide EP Impurity C
CAT No: SZ-L032004
CAS No: 61643-23-0
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: In Stock
SZ-L032004
CAS No:61643-23-0
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: In Stock

Leflunomide EP Impurity D

Picture of Leflunomide EP Impurity D
CAT No: SZ-L032005
CAS No: 42831-50-5
Mol.F. : C5H5NO3
Mol.Wt. : 127.1
Inv. Status: In Stock
SZ-L032005
CAS No:42831-50-5
Mol.F.: C5H5NO3
Mol.Wt.: 127.1
Inv. Status: In Stock

Leflunomide EP Impurity E

Picture of Leflunomide EP Impurity E
CAT No: SZ-L032006
CAS No: 208401-20-1
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: Custom Synthesis
SZ-L032006
CAS No:208401-20-1
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: Custom Synthesis

Leflunomide EP Impurity F

Picture of Leflunomide EP Impurity F
CAT No: SZ-L032007
CAS No: 1403564-06-6
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: In Stock
SZ-L032007
CAS No:1403564-06-6
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: In Stock

Leflunomide EP Impurity G

Picture of Leflunomide EP Impurity G
CAT No: SZ-L032008
CAS No: 724429-16-7
Mol.F. : C12H12N2O2
Mol.Wt. : 216.2
Inv. Status: Custom Synthesis
SZ-L032008
CAS No:724429-16-7
Mol.F.: C12H12N2O2
Mol.Wt.: 216.2
Inv. Status: Custom Synthesis

Leflunomide EP Impurity H

Picture of Leflunomide EP Impurity H
CAT No: SZ-L032009
CAS No: 24522-30-3
Mol.F. : C10H7F3N2O
Mol.Wt. : 228.2
Inv. Status: Under Synthesis
SZ-L032009
CAS No:24522-30-3
Mol.F.: C10H7F3N2O
Mol.Wt.: 228.2
Inv. Status: Under Synthesis

Teriflunomide-E Isomer

Picture of Teriflunomide-E Isomer
CAT No: SZ-L032010
CAS No: 108605-62-5
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: Custom Synthesis
SZ-L032010
CAS No:108605-62-5
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: Custom Synthesis

Ethyl 5-Methylisoxazole-4-Carboxylate

Picture of Ethyl 5-Methylisoxazole-4-Carboxylate
CAT No: SZ-L032011
CAS No: 51135-73-0
Mol.F. : C7H9NO3
Mol.Wt. : 155.2
Inv. Status: Custom Synthesis
SZ-L032011
CAS No:51135-73-0
Mol.F.: C7H9NO3
Mol.Wt.: 155.2
Inv. Status: Custom Synthesis

Leflunomide Metabolite Ethyl Analog

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CAT No: SZ-L032012
CAS No: NA
Mol.F. : C13H11F3N2O2
Mol.Wt. : 284.2
Inv. Status: Custom Synthesis
SZ-L032012
CAS No:NA
Mol.F.: C13H11F3N2O2
Mol.Wt.: 284.2
Inv. Status: Custom Synthesis

Leflunomide Impurity 1

Picture of Leflunomide Impurity 1
CAT No: SZ-L032014
CAS No: 419534-37-5
Mol.F. : C10H7F3N2O
Mol.Wt. : 228.2
Inv. Status: In Stock
SZ-L032014
CAS No:419534-37-5
Mol.F.: C10H7F3N2O
Mol.Wt.: 228.2
Inv. Status: In Stock

3-Trifluoro Isomer

Picture of 3-Trifluoro Isomer
CAT No: SZ-L032015
CAS No: 63927-52-6
Mol.F. : C12H9F3N2O2
Mol.Wt. : 270.2
Inv. Status: In Stock
SZ-L032015
CAS No:63927-52-6
Mol.F.: C12H9F3N2O2
Mol.Wt.: 270.2
Inv. Status: In Stock

Leflunomide Impurity 2

Picture of Leflunomide Impurity 2
CAT No: SZ-L032016
CAS No: 17153-20-7
Mol.F. : C5H5NO3
Mol.Wt. : 127.1
Inv. Status: In Stock
SZ-L032016
CAS No:17153-20-7
Mol.F.: C5H5NO3
Mol.Wt.: 127.1
Inv. Status: In Stock

Leflunomide Impurity 3

Picture of Leflunomide Impurity 3
CAT No: SZ-L032017
CAS No: 2772495-33-5
Mol.F. : C19H14F3N3O3
Mol.Wt. : 389.3
Inv. Status: Custom Synthesis
SZ-L032017
CAS No:2772495-33-5
Mol.F.: C19H14F3N3O3
Mol.Wt.: 389.3
Inv. Status: Custom Synthesis

Stable Isotopes And Metabolites

Leflunomide D4

Picture of Leflunomide D4
CAT No: SZ-L032D01
CAS No: 1189987-23-2
Mol.F. : C12H5D4F3N2O2
Mol.Wt. : 274.3
Inv. Status: Custom Synthesis
SZ-L032D01
CAS No:1189987-23-2
Mol.F.: C12H5D4F3N2O2
Mol.Wt.: 274.3
Inv. Status: Custom Synthesis

5-Methylisoxazole-3-Carboxylic-d4 Acid

Picture of 5-Methylisoxazole-3-Carboxylic-d4 Acid
CAT No: SZ-L032D03
CAS No: 1267623-84-6
Mol.F. : C5HD4NO3
Mol.Wt. : 131.1
Inv. Status: Custom Synthesis
SZ-L032D03
CAS No:1267623-84-6
Mol.F.: C5HD4NO3
Mol.Wt.: 131.1
Inv. Status: Custom Synthesis