2 120 7 120 25 3 120 0 120 29 aNanomoles of inhibitor per mg of mitochondrial protein. for 1 week at room temperature. and the resulting orange precipitate was collected by filtration. Fractional recrystallization from EtOH-EtzO-CHC13 and CHC13-EtOH gave-300 mg of 1, mp 144-145", as bright orange crystals (yield 13.2%); recrystallizations from EtOH of solids from filtrates gave-600 mg of 2, mp 81-83"(yield 17.2%). Anal.(1, CZOH~ ONZOZS) C, H, N, S. ...