oO 


8) 

) =) 
Er§-p=O Ers P=0 
OEr OEr 
0, £H3 = 
Bayer 25141. Sulfone 
Isomeride Isomeride 
O ~N CH O~ CH; 
S=P-OEr 
OErT + 
Bayer 25141 
° 
i. 
Er8-P=9 S=P-OEr 
— OEr OEr 
Bayer 25141 Bayer 25141 [someride 
Sulfone Isomeride Sulfone 
Hy 

O=P-OEr 
OEr 
Bayer 25141 
Oxon Sulfone 
32 
