Chemical identity

Semaglutide Impurity 91

CAS not listed · C21H30N2O7

01Identity

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

Lazychem IDLC-27947
PubChem CID14375967
NameSemaglutide Impurity 91
CAS RNNot listed
Molecular formulaC21H30N2O7
Molecular weight422.5 g/mol
IUPAC nameTert-butyl (4S)-5-[(2-ethoxy-2-oxoethyl)amino]-5-oxo-4-(phenylmethoxycarbonylamino)pentanoate
InChIKeyHTDIDZXHPIAEIL-INIZCTEOSA-N

02Structure identifiers

2D structurePubChem CID 14375967
Two-dimensional chemical structure of Semaglutide Impurity 91
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

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

Defined stereocentres1
Unassigned stereocentres0
Ring count1
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCOC(=O)CNC(=O)[C@H](CCC(=O)OC(C)(C)C)NC(=O)OCC1=CC=CC=C1
InChINot listed
Formula from structureC21H30N2O7
Molecular weight from structure422.5 g/mol

03Stereochemistry

The published structure contains 1 defined and 0 unassigned tetrahedral stereocentre. The exact wedge and dash depiction is shown above.

Defined centres1Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 2Before 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 FOUNDNo CAS number is available for an exact comparison.
SCOMETNO EXACT REVIEWED CAS MATCHNo CAS number is available for an exact comparison.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Semaglutide

View API and impurity family

Other names

No synonyms are listed.

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