1,3,4-Oxadiazol-2(3H)-one, 3-(2,4-dichloro-5-(2-propynyloxy)phenyl)-5-(1,1-dimethylethyl)- 3-(2,4-Dichloro-5-(2-propynyloxy)phenyl)-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one 39807-15-3 5-tert-Butyl-3-(2,4-dichloro-5-propargyloxyphenyl)-1,3,4-oxadiazol-2(3H)-one EINECS 254-637-6 Oxadiargyl Oxadiargyl [ISO] RP 020630 Topstar