Methylpropane or 2-methylpropane.
An isomer of C4H10 found in natural gas.
Used as a propellant in aerosol sprays such as hair spray and cooking sprays. Replaces freon in the refrigeration process.
Sold in pressurized canisters as fuel for backpacking and camping stoves.
Ike sold isobutane down by the icy shore. And he burned it to keep warm too.