3d image of heptane skeletal formula

heptane n-heptane septane straight-chain alkane anti-knock lpg petroleum petrol component oil gasoline fuel octane number heptane iso-octane non-polar solvent liquid extraction rubber cement adhesive remover stamp collectors self-adhesive stamps limonene-based rating explosively pre-ignition jeffrey pine pittosporum resiniferum substance matter material compound agent stuff reagent functional group precursor synthesis reaction production building block molecule molecular formula skeletal structural structure 3d