Chemical identity

Tilidine EP Impurity E (Free Base)

CAS 2732673-20-8 · C17H21NO3

01Identity

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

Lazychem IDLC-29667
PubChem CID129318405
NameTilidine EP Impurity E (Free Base)
CAS RN2732673-20-8
Molecular formulaC17H21NO3
Molecular weight287.4 g/mol
IUPAC nameEthyl (1RS,6SR)-6-(dimethylamino)-3-oxo-3,6-dihydro[1,1′-biphenyl]-1(2H)-carboxylate
InChIKeyHLVLGEYTTCYNDS-DOTOQJQBSA-N

02Structure identifiers

2D structurePubChem CID 129318405
Two-dimensional chemical structure of Tilidine EP Impurity E (Free Base), CAS 2732673-20-8
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.
SMILESCCOC(=O)[C@]1(CC(=O)C=C[C@@H]1N(C)C)C2=CC=CC=C2
InChINot listed

03Stereochemistry

The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres2Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 4Before 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.

04Possible N-nitroso structures

A record-level structural review indicates a possible N-nitroso candidate. This is not a confirmed impurity, formation prediction or analytical finding.

Possible structure candidateUnconfirmed identity
Possible N-nitroso structural candidate related to Tilidine EP Impurity E (Free Base)
No CAS number, formation claim or analytical confirmation is assigned.

A structural result alone does not establish that a nitrosamine forms. A process-specific and analytical assessment is required.

05India 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 / RCSNOT FOUND IN REVIEWED ENTRIESCAS 2732673-20-8 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated.
SCOMETNOT FOUND IN REVIEWED CAS ENTRIESCAS 2732673-20-8 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

06Names and relationships

Associated parent compound

Tilidine

View API and impurity family

Other names

No synonyms are listed.

Related records from the same parent family

07Documented 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.

08Sources