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Methylcyclopropanesimp.png Methylcyclopropane (molecular diagram).png
CAS number 594-11-6 YesY
PubChem 11657
ChemSpider 11167
EC number 209-825-2
MeSH C105498
Jmol-3D images Image 1
Molecular formula C4H8
Molar mass 56.11 g mol−1
Appearance Colourless gas[1]
Density 0.6912 g/cm3[1]
Melting point −117.2 °C (−179.0 °F; 156.0 K)[1]
Boiling point 4 to 5 °C (39 to 41 °F; 277 to 278 K)[1]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Methylcyclopropane is an organic compound with the structural formula C3H5CH3. This colorless gas is the monomethyl derivative of cyclopropane.


Methylcyclopropane, like many other cyclopropanes, undergoes ring-opening reactions. Bond cleavage in certain reactions is also reported in conjunction with the use of methylenecyclopropane groups as protective groups for amines.[citation needed]


  1. ^ a b c d Lide, David. R, ed. (2009). CRC Handbook of Chemistry and Physics (89th ed.). CRC Press. ISBN 978-1-4200-6679-1.