IUPAC Nomenclature • Common alkyl groups or C2H5 or C3H7 or C4H9 International Union of Pure and Applied Chemistry An international federation of National Adhering Organizations that represents chemists in individual countries. It is a member of the International Science Council. Founded in 1919, stationed in North Carolina, USA. Motto: Advancing Chemistry Worldwide ACTIVITY #3 name the following branched alkanes. ACTIVITY #3 name the following branched alkanes. 8) 11) 9) 12) 10) ACTIVITY #3 name the following branched alkanes. 13) 14)