All the stable alkali metals except lithium can form red ozonides (MO3) through low-temperature reaction of the powdered anhydrous hydroxide with ozone: the ozonides may be then extracted using liquid ammonia.
ˈɔːl ðə stˈeɪbəl ˈælkəlˌaɪ mˈɛɾəlz ɛksˈɛpt lˈɪθiəm kæn fˈɔːɹm ɹˈɛd ˈoʊzənˌaɪdz ˌɛmˈoʊ θɹˈiː θɹuː lˈoʊtˈɛmpɹɪtʃɚ ɹɪˈækʃən ʌvðə pˈaʊdɚd ænhˈaɪdɹəs haɪdɹˈɑːksaɪd wɪð ˈoʊzoʊn: ðɪ ˈoʊzənˌaɪdz mˈeɪ biː ðˈɛn ɛkstɹˈæktᵻd jˈuːzɪŋ lˈɪkwɪd æmˈoʊniə.