Chemical identity

cis-Norbornene-exo-2,3-dicarboxylic Anhydride

CAS 2746-19-2 · C9H8O3

01Identity

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

Lazychem IDLC-10872
PubChem CID637794
Namecis-Norbornene-exo-2,3-dicarboxylic Anhydride
CAS RN2746-19-2
Molecular formulaC9H8O3
Molecular weight164.16 g/mol
IUPAC name(3aR,4R,7S,7aS)-rel-3a,4,7,7a-Tetrahydro-4,7-methanoisobenzofuran-1,3-dione
InChIKeyKNDQHSIWLOJIGP-RNGGSSJXSA-N

02Structure identifiers

2D structurePubChem CID 637794
Two-dimensional chemical structure of cis-Norbornene-exo-2,3-dicarboxylic Anhydride, CAS 2746-19-2
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 3 rings, includes aliphatic carbon, has 4 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres4
Unassigned stereocentres0
Ring count3
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC1[C@@H]2C=C[C@H]1[C@H]3[C@@H]2C(=O)OC3=O
InChINot listed
Formula from structureC9H8O3
Molecular weight from structure164.16 g/mol

03Stereochemistry

The published structure contains 4 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres4Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 16Before 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 2746-19-2 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 2746-19-2 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

Lurasidone

View API and impurity family

Other names

  • (1S, 2S, 6R, 7R)-4-oxatricyclo[5.2.1.02, 6]dec-8-ene-3, 5-dione
  • Himic Anhydride
  • exo-3, 6-Methylene-1, 2, 3, 6-tetrahydrophthalic Anhydride
  • exo-3, 6-Methylene-4-cyclohexene-1, 2-dicarboxylic Anhydride
  • exo-5-Norbornene-1, 2-dicarboxylic Anhydride
  • 2746-19-2
  • N1KQO6559B
  • 4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3aR,4R,7S,7aS)-rel-
  • DTXSID70883721
  • NSC-110659
  • RefChem:788377
  • DTXCID101023218

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