EP-C

CAS No: 106881-41-8
Chemical Name:
2,3-O-(propan-2,2-diyl)-beta-D-fructopyranose 1-sulfamate
Molecular Formula:
C9H17NO8S

EP-D

CAS No: 950603-46-0
Chemical Name:
2,3:4,5-bis-O-(propan-2,2-diyl)-beta-D-fructopyeanose 1-[N-[[[2,3:4,5-bis-O-(propan-2,2-diyl)-beta-D-fructopyranosyl]oxy]carbamoyl]sulfamate]
Molecular Formula:
C25H39NO15S

Didesacetal Impurity

CAS No: 106881-42-9
Chemical Name:
((2R,3S,4R,5R)-2,3,4,5-tetrahydroxytetrahydro-2H-pyran-2-yl)methyl sulfamate
Molecular Formula:
C6H13NO8S

Chloro impurity

CAS No: 32785-90-3
Chemical Name:
(3aR,5aR,8aR,8bS)-3a-(chloromethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran
Molecular Formula:
C12H19ClO5

Impurity-1

CAS No: 912456-61-2
Chemical Name:
(3aR,6R,7S,7aS)-6-(hydroxymethyl)-2,2-dimethyltetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6,7-diol
Molecular Formula:
C9H16O6

Reference standared

CAS No: 97240-79-4
Chemical Name:
((3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-3a-yl)methyl sulfamate
Molecular Formula:
C12H21NO8S

EP-A/USP RCA

CAS No: 20880-92-6
Chemical Name:
2,3:4,5-Bis-O-(propan-2,2-diyl)-beta-D-fructopyranose
Molecular Formula:
C12H20O6

USP N-Methyl Topiramate

CAS No: 97240-80-7
Chemical Name:
((3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-3a-yl)methyl methylsulfamate
Molecular Formula:
C13H23NO8S

USP Fructose/EP-E

CAS No: 57-48-7 /7660-25-5
Chemical Name:
(3S,4R,5R)-1,3,4,5,6-pentahydroxyhexan-2-one
Molecular Formula:
C6H12O6

Chlorosulfonyl impurity

CAS No: 150609-95-3
Chemical Name:
((3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-3a-yl)methyl sulfurochloridate
Molecular Formula:
C12H19ClO8S

EP-B

CAS No: 876403-98-4
Chemical Name:
2,3:4,5-bis-O-(propan-2,2-diyl)-beta-D-fructopyranose 1-[N-(diethylcarbamoyl)sulfamate]
Molecular Formula:
C17H30N2O9S