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Molecule record

piperidin-2-one

C5H9NO

99.13 g/mol

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Molecular properties

Formula
C5H9NO
Molar mass
99.13 g·mol−1
Exact mass
99.0684 Da
2
PubChem CID
12665

Functional groups

Alkane / alkyl carbon
Amide
Secondary amine

Physical properties

No source-backed physical properties are curated for this molecule yet.

Common names and synonyms

  • .alpha.-Piperidone
  • 2-Azacyclohexanone
  • 2-Piperidinone
  • 2-Piperidone
  • 2-oxopiperidine
  • 211-622-9
  • 5-Pentanolactam
  • 675-20-7
Show all 24 synonyms
  • CHEBI:77761
  • DELTA-VALEROLACTAM
  • DTXCID7044897
  • DTXSID1060976
  • NSC-18894
  • NSC-2305
  • PIPERIDONE,2-
  • Piperidinone
  • Piperidon
  • Piperidone
  • Piperidone-2
  • RefChem:910229
  • Valerolactam
  • Valerolactim
  • WLN0GQQ6EK
  • alpha-Piperidone

Structure identifiers

Canonical SMILES
O=C1CCCCN1
Isomeric SMILES
C1CCNC(=O)C1
InChI
InChI=1S/C5H9NO/c7-5-3-1-2-4-6-5/h1-4H2,(H,6,7)
InChIKey
XUWHAWMETYGRKB-UHFFFAOYSA-N
PubChem CID
12665

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library
No redistributable or simulated spectroscopy record is attached yet.

Simulated NMR

On-demand educational prediction for piperidin-2-one; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for piperidin-2-one; not experimental data.

Sources

Molecule identity

Retrieved 8/20/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)
Open source record