1,1,2-Trimethylethane 2-Methylbutane 68923-44-4 78-78-4 92046-46-3 AI3-28787 Butane, 2-methyl- Dimethylethylmethane EINECS 201-142-8 Ethyldimethylmethane HSDB 618 ISOPENTANE Isoamylhydride NSC 119476 Pentane, all isomers