(RS)-2-(3,5-Dichlorophenyl)-2-(2,2,2-trichloroethyl)oxirane 137085-17-7 58138-08-2 59249-66-0 Dowco 356 EPA Pesticide Chemical Code 123901 Nelpon Oxirane, 2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl)- Tandem Tridiphane Tridiphane [ANSI:BSI:ISO]