1-(5-methyldiazaphosphol-2-yl)ethanone

2-ethoxy-2,5,5-trimethyl-1,3,4-oxadiazole

2-acetoxy-2,5,5-trimethyl-2,5-dihydro-[1,2,4]oxadiazole

2,2,5-trimethyl-5-(2,2,2-trichloroethoxy)-1,3,4-oxadiazole

2,2,5-trimethyl-5-(2,2,2-trifluoroethoxy)-1,3,4-oxadiazole