C8: 18 isomers: octane, 2-methylheptane, 3-methylheptane, 2,3-dimethylhexane, 3,4-dimethylhexane,  2,3,4-trimethylpentane, 3,3-dimethylhexane, 2,2-trimethylpentane, 2,4-dimethylhexane, 2,2,4-trimethylpentane, 2,3,3-Trimethylpentane, 3,3,4-trimethyl-pentane, 3,4,4-trimethylpentane, 2,4,4-trimethylpentane, (5 isomers)
sˈiː ˈeɪt: ˈeɪtiːn ˈaɪsəmɚz: ˈɑːkteɪn, tˈuːmˈɛθəlhˌɛpteɪn, θɹˈiːmˈɛθəlhˌɛpteɪn, tˈuː,θɹˈiːdˈaɪmθɪlhˌɛkseɪn, θɹˈiː,fˈoːɹdˈaɪmθɪlhˌɛkseɪn,  tˈuː,θɹˈiː,fˈoːɹtɹˈaɪmɪθəlpˌɛnteɪn, θɹˈiː,θɹˈiːdˈaɪmθɪlhˌɛkseɪn, tˈuː,tˈuːtɹˈaɪmɪθəlpˌɛnteɪn, tˈuː,fˈoːɹdˈaɪmθɪlhˌɛkseɪn, tˈuː,tˈuː,fˈoːɹtɹˈaɪmɪθəlpˌɛnteɪn, tˈuː,θɹˈiː,θɹˈiːtɹˈaɪmɪθəlpˌɛnteɪn, θɹˈiː,θɹˈiː,fˈoːɹtɹˈaɪmɛθəlpˈɛnteɪn, θɹˈiː,fˈoːɹ,fˈoːɹtɹˈaɪmɪθəlpˌɛnteɪn, tˈuː,fˈoːɹ,fˈoːɹtɹˈaɪmɪθəlpˌɛnteɪn, fˈaɪv ˈaɪsəmɚz