4 methyl 3 propyl octane July 8, 2019 16 32 64 128 4 methyl 3 propyl octane structure 3 methyl 4 propyl octane-2 6-diol 4 ethyl 3 methyl 4 n propyl octane 4 ethyl 3 methyl 4 and propyl octane 4 propyl octane 4 methyl octane 4 methyl octan