Chemical identity

Topiramate EP Impurity D (Free Base)

CAS 950603-46-0 · C25H39NO15S

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-29891
PubChem CID132554563
NameTopiramate EP Impurity D (Free Base)
CAS RN950603-46-0
Molecular formulaC25H39NO15S
Molecular weight625.64 g/mol
IUPAC name2,3:4,5-bis-O-(Propan-2,2-diyl)-β-D-fructopyranose-1-[N-[[(2,3:4,5-bis-O-(propan-2,2-diyl)-β-D-fructopyranosyl]oxy]carbamoyl]sulfamate
InChIKeyGROVDZIQQRSHBK-ZKASJUMXSA-N

02Structure identifiers

2D structurePubChem CID 132554563
Two-dimensional chemical structure of Topiramate EP Impurity D (Free Base), CAS 950603-46-0
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 6 rings, includes aliphatic carbon, has 8 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres8
Unassigned stereocentres0
Ring count6
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCC1(O[C@@H]2CO[C@@]3([C@H]([C@@H]2O1)OC(O3)(C)C)COC(=O)NS(=O)(=O)OC[C@]45[C@H]([C@H]6[C@@H](CO4)OC(O6)(C)C)OC(O5)(C)C)C
InChINot listed
Formula from structureC25H39NO15S
Molecular weight from structure625.64 g/mol

03Stereochemistry

The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres8Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 256Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 950603-46-0 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 950603-46-0 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Topiramate

View API and impurity family

Other names

  • Topiramate EP Impurity D
  • beta-D-Fructopyranose, 2,3:4,5-bis-O-(1-methylethylidene)-, 1-(N-sulfocarbamate), 1-ester with 2,3:4,5-bis-O-(1-methylethylidene)-beta-D-fructopyranose

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources