Can astronomical observations be used to constrain crucial chemical reactions? The methoxy case. SOLIS XVIII. - Balucani, Nadia; Ceccarelli, Cecilia; Vazart, Fanny; Dulieu, Francois; Skouteris, Dimitrios; Rosi, Marzio; Pirani, Fernando; Bianchi, Eleonora; Caselli, Paola; Codella, Claudio (Monthly Notices of the Royal Astronomical Society, 2024)