(1S,2R,4aS,7R,8aS)-2-Chloro-1,4a-dimethyl-7-(prop-1-en-2-yl)decahydronaphthalene is an intermediate in the synthesis of α-Eudesmol (E938595) which is an isomer of β-Eudesmol (E938600), a sesquiterpenoid known to induce neurite outgrowth. β-Eudesmol exhibits antiangiogenic activity.