Chemical identity

Oseltamivir EP Impurity B/Oseltamivir BP Impurity B / Oseltamivir Related Compound A/ 2-Azido-1,2-Dihydro Oseltamivir

CAS 2125702-80-7 · C16H29N5O4

01Identity

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

Lazychem IDLC-24234
PubChem CID76968516
NameOseltamivir EP Impurity B/Oseltamivir BP Impurity B / Oseltamivir Related Compound A/ 2-Azido-1,2-Dihydro Oseltamivir
CAS RN2125702-80-7
Molecular formulaC16H29N5O4
Molecular weight355.43 g/mol
IUPAC nameEthyl (1R,2R,3S,4R,5S)-4-acetamido-5-amino-2-azido-3-(1-ethylpropoxy) cyclohexanecarboxylate
InChIKeyGSFIWDGFHNAUFU-XLWJZTARSA-N

02Structure identifiers

2D structurePubChem CID 76968516
Two-dimensional chemical structure of Oseltamivir EP Impurity B/Oseltamivir BP Impurity B / Oseltamivir Related Compound A/ 2-Azido-1,2-Dihydro Oseltamivir, CAS 2125702-80-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 1 ring, includes aliphatic carbon, has 5 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres5
Unassigned stereocentres0
Ring count1
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCC(CC)O[C@H]1[C@@H]([C@H](C[C@H]([C@H]1N=[N+]=[N-])C(=O)OCC)N)NC(=O)C
InChINot listed
Formula from structureC16H29N5O4
Molecular weight from structure355.43 g/mol

03Stereochemistry

The published structure contains 5 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres5Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 32Before symmetry reduction

Published same-connectivity configurations

2 records

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.

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 2125702-80-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 2125702-80-7 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

Oseltamivir

View API and impurity family

Other names

  • Oseltamivir EP Impurity B
  • Oseltamivir impurity B CRS
  • 2125702-80-7
  • IE8U85Q63A
  • (3S,4R,5S)-ethyl 4-acetamido-5-amino-2-azido-3-(pentan-3-yloxy)cyclohexanecarboxylate
  • Oseltamivir Phosphate EP Impurity B
  • ethyl (1R,2R,3S,4R,5S)-4-acetamido-5-amino-2-azido-3-(pentan-3-yloxy)cyclohexane-1-carboxylate
  • Oseltamivir Related Compound A [USP-RS]
  • (1R,2R)-2-azido-1,2-dihydro oseltamivir
  • CS-0164886
  • 2-AZIDO-1,2-DIHYDRO OSELTAMIVIR, (1R,2R)-
  • OSELTAMIVIR PHOSPHATE IMPURITY B [EP IMPURITY]

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