Alkane (fricha Paraffine) san kednfeamig; de Kuinstoffkedn kau ned vazweigt (n-Alkane) oda vazweigt (i-Alkane) sei. Se haum a Summanfuaml in da Fuam CnH2n+2, z. B. Methan CH4, Ethan C2H6, 2-Metyl-Butan C5H12.