5-Pyrazolone

CAS Registry Number®

137-44-0

CAS Name

5-Pyrazolone

Molecular Formula

C3H4N2O

Molecular Mass

84.08

Cite this Page

5-Pyrazolone.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=137-44-0 (retrieved 2024-11-22) (CAS RN: 137-44-0).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    143-144 °C @ Press: 0.3 Torr

  • Melting Point (2)

    268 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C3H4N2O/c6-3-1-2-4-5-3/h2H,1H2,(H,5,6)

InChIKey

InChIKey=ZRHUHDUEXWHZMA-UHFFFAOYSA-N

SMILES

O=C1CC=NN1

Canonical SMILES

O=C1NN=CC1

Other Names for this Substance

  • 3H-Pyrazol-3-one, 2,4-dihydro-
  • 2-Pyrazolin-5-one
  • 2,4-Dihydro-3H-pyrazol-3-one
  • 5-Pyrazolone
  • 1H-Pyrazol-5(4H)-one

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