
CH O CH.-C=C-R'! 
;  ¥f, 
C=CH-CH-CH-C-O0-CH 
Ri Ne CH.-C=0 
ran 2 
CH, CH, 
R! R" 
Pyrethrin I -CH., - CH, -CH=CH-CH=CH,, 
0 
Pyrethrin II -C-OCH,, —CH,-CH=CH-CH=CH,, 
Cinerin I -CH, -CH,-CH=CH-CH 
0 
Cinerin II -C-0cH, ~CH,,~CH=CH-CH, 
Isopyrethrin I CH, ~CH=CH-CH=CH-CH. 
Isopyrethrin II docu, ~CH=CH-CH=CH-CH., 
Allethrin I ~CH., ~CH,-CH=CH, 
0 
Allethrin II ~C-OCH., ~CH CH=CH, 
Roach & oy CH.- C =C-CH,-CH=CH 
Allethrin —lY 8 ft i 2 é 
eee =CH-CH-CH-C-OH +- HO-C 
Lipase oe \7/ 
H CH, -C=0 
CH, oN , 
H CH 
ons 3 
Chrys anthemum Allethrolone 
Monocarboxylic Acid 
33 
