3d image of isobutylene skeletal formula

isobutylene 2-methylpropene isobutene 2-methylprop-1-ene 2-methylpropylene methylpropene alkene olefin tautomer isomer stereoisomer butylene flammable gas tertiary butyl alcohol catalytic dehydrogenation isooctane fuel additive methacrolein polymerization rubber pib bht bha friedel-crafts alkylation zeolite catalysts dangerously explosive bleve dangerous fire exothermic reaction substance matter material compound component agent stuff reagent functional group precursor synthesis production building block 3d