2,5-Cyclohexadiene-1,4-dione, 2,5-dihydroxy-3-undecyl- (9CI) 2,5-Dihydroxy-3-undecyl-1,4-benzoquinone 2,5-Dihydroxy-3-undecyl-2,5-cyclohexadiene-1,4-dione 2,5-Dihydroxy-3-undecyl-p-benzoquinone 4-08-00-02769 (Beilstein Handbook Reference) 550-24-3 BRN 1885786 EINECS 208-979-8 Embelic acid Embelin Emberine NSC 91874 p-Benzoquinone, 2,5-dihydroxy-3-undecyl-