CAS Number: 100-54-9

Alternate CAS#:

Chemical Name: Fampridine Impurity 5 (3-Cyanopyridine)

Molecular Formula: C6H4N2

Molecular Weight: 104.11

CAS Number: 19808-51-6

Alternate CAS#:

Chemical Name: Fampridine Impurity 4

Molecular Formula: C10H10N4

Molecular Weight: 186.22

CAS Number: 1864897-67-5

Alternate CAS#:

Chemical Name: Fampridine Impurity 3 ( N-(4-Pyridyl)-2-Hydroxybutyramide)

Molecular Formula: C9H12N2O2

Molecular Weight: 180.21

CAS Number: 60388-53-6

Alternate CAS#:

Chemical Name: Methotrexate Impurity 3

Molecular Formula: C20H22N8O5

Molecular Weight: 454.45

CAS Number: 80407-56-3 (free base)

Alternate CAS#:

Chemical Name: Methotrexate Impurity 2 Trifluoroacetate

Molecular Formula: C21H27N9O3. C2HF3O2

Molecular Weight: 453.51 114.02

CAS Number: 80407-56-3

Alternate CAS#:

Chemical Name: Methotrexate Impurity 2

Molecular Formula: C21H27N9O3

Molecular Weight: 453.51

CAS Number: 125583-33-7

Alternate CAS#:

Chemical Name: Fampridine Impurity 1 (Dalfampridine Impurity 1)

Molecular Formula: C6H5ClN2O

Molecular Weight: 156.57

CAS Number: 71074-44-7 (free base)

Alternate CAS#:

Chemical Name: Methotrexate Impurity 1 HCl

Molecular Formula: C22H27N9O4. HCl

Molecular Weight: 481.52

CAS Number: 73610-81-8 (free amine)

Alternate CAS#:

Chemical Name: Methotrexate Tetraglutamate Trifluoroacetate

Molecular Formula: C35H43N11O14. C2HF3O2

Molecular Weight: 841.78

CAS Number: 41600-14-0 (free amine)

Alternate CAS#:

Chemical Name: Methotrexate Triglutamate Trifluoroacetate

Molecular Formula: C30H36N10O11. C2HF3O2

Molecular Weight: 712.67

CAS Number: 59-05-2 (free amine)

Alternate CAS#:

Chemical Name: Methotrexate Heptaglutamate Trifluoroacetate

Molecular Formula: C50H64N14O23. C2HF3O2

Molecular Weight: 1229.14

CAS Number: 41600-13-9 (free amine)

Alternate CAS#:

Chemical Name: Methotrexate Diglutamate Trifluoroacetate

Molecular Formula: C25H29N9O8. C2HF3O2

Molecular Weight: 583.55