1.6.5.9 1-hexadecyl-3-(trifluoroethyl)-sn-glycero-2-phosphomethanol 20 microM, 149% of initial activity for detergent-solubilized enzyme 742341 1.6.5.9 17-beta-hydroxy-17-alpha-ethynyl-delta-4-androstano[3,2-b]pyrimido[1,2-a]benzimidazole 20 microM, 142% of initial activity for detergent-solubilized enzyme 742341 1.6.5.9 2,6-difluoro-4-[2-(phenylsulfonylamino)ethylthio]phenoxyacetamide 20 microM, 136% of initial activity for detergent-solubilized enzyme, 134% of initial activity for lipid-reconstituted enzyme 742341 1.6.5.9 pentylenetetrazole 20 microM, 132% of initial activity for detergent-solubilized enzyme 742341