I-Methane iwuhlobo lwegesi yemvelo, eyakhiwe ikakhulukazi ama-alkanes, kuhlanganise ne-methane, ethane, propane, kanye ne-butane, futhi i-methane iyingxenye eyinhloko.
Ngokungqubuzanayo, igesi yamalahle iyisibaseli segesi ehlanganisa ingxube yezinto ezivuthayo, i-carbon monoxide iyisakhi sayo esiyinhloko.