3-Methyl-1-butyne

CAS Registry Number®

598-23-2

CAS Name

3-Methyl-1-butyne

Molecular Formula

C5H8

Molecular Mass

68.12

Cite this Page

3-Methyl-1-butyne.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=598-23-2 (retrieved 2025-04-01) (CAS RN: 598-23-2).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    39.0-39.5 °C

  • Melting Point (2)

    -89.7 °C

  • Density (1)

    0.6670 g/cm³ @ Temp: 20 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C5H8/c1-4-5(2)3/h1,5H,2-3H3

InChIKey

InChIKey=USCSRAJGJYMJFZ-UHFFFAOYSA-N

SMILES

C(C#C)(C)C

Canonical SMILES

C#CC(C)C

Other Names for this Substance

  • 1-Butyne, 3-methyl-
  • 3-Methyl-1-butyne
  • Isopentyne
  • Isopropylacetylene
  • 2-Methyl-3-butyne

View All

CAS INSIGHTSTM
A hexagon honeycomb pattern featuring icons representing Data Fabric Analytics, Antennas, Construction, DNA, and Sustainability Bamboo. Each hexagon contains a distinct symbol related to its theme, arranged in a visually appealing and interconnected design.