141-70-8 2,2,6,6-Tetramethyl-4-methyleneheptane 2-(2,2-Dimethylpropyl)-4,4-dimethylpent-1-ene 2-Neopentyl-4,4-dimethylpentene-1 EINECS 205-495-9 Heptane, 2,2,6,6-tetramethyl-4-methylene-