4 h r sub 5 cyclopentyl50 r sub 1 cl 163 165 5 5 10 r sub 3 ch sub 3 r sub 4 h r sub 5 cyclopentyl51 r sub 1 cl 113 116 5 9 10 r sub 3 cl r sub 4 h r sub 5 n propyl52 r sub 1 br 120 125 10 9 r sub 3 cl r sub 4 h r sub 5 ch sub 2 ch sub 353 r sub 1 cl 126 128 10 10 r sub 3 cl r sub 4 5 cl r sub 5 ch sub 2 ch sub 354 r sub 1 cl 173 174 10 9 9 r sub 3 cl r sub 4 h r sub 5 n butyl55 r sub 1 cl 93 94 5 1 7 r sub 3 cl r sub 4 5 cl r sub 5 n butyl56 r sub 1 cl 144 147 5 5 5 r sub 3 cl r sub 4 6 cl r sub 5 n butyl57 r sub 1 br 175 177 5 3 8 r sub 3 cl r sub 4 h r sub 5 n butyl58 r sub 1 cl 156 158 2 8 10 r sub 3 cl r sub 4 h r sub 5 i propyl59 r sub 1 br 160 162 5 9 10 r sub 3 cl r sub 4 h r sub 5 i propyl60 r sub 1 cl 180 182 0 5 1 10 r sub 3 cl r sub 4 h r sub 5 t butyl__________________________________________________________________________ spc6 effect onexample no substitution melting point pounds acre jimson weed u00b0 c pre.