alkane 2,2,4,6,6-pentamethylheptane 170.203 170.33480 2,2,4,6,6-pentamethylheptane A branched alkane that is heptane carrying two methyl groups each at positions 2 and 6, and one methyl group at position 4. C12H26 CAS:13475-82-6 CC(CC(C)(C)C)CC(C)(C)C CHEBI:77509 InChI=1S/C12H26/c1-10(8-11(2,3)4)9-12(5,6)7/h10H,8-9H2,1-7H3 Reaxys:1731750 VKPSKYDESGTTFR-UHFFFAOYSA-N chebi_ontology