Fig. 7

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Schematics of the formation pathways of acetone, proposed by previous theoretical calculations (Sung & Tidwell 1998), astrochemical simulations (MAGICKAL; Garrod et al. 2022), and experiments (Hudson et al. 2017). Except the first study that assumes normal temperature and pressure, the remaining two are intended for astrochemical conditions (i.e., low temperature and pressure). Legends are provided in the figure.
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