The numeral prefix is generally Greek; however, alkanes with a carbon atom count ending in nine, for example nonane, use the Latin prefix non-.
ðə nˈuːmɚɹəl pɹˈiːfɪks ɪz dʒˈɛnɚɹəli ɡɹˈiːk; haʊˈɛvɚ, ˈælkeɪnz wɪð ɐ kˈɑːɹbən ˈæɾəm kˈaʊnt ˈɛndɪŋ ɪn nˈaɪn, fɔːɹ ɛɡzˈæmpəl nˌɑːnˈeɪn, jˈuːs ðə lˈætɪn pɹˈiːfɪks nˈɑːn.