the following ld50 values were recorded : cp alone 254 , cp + dsf 77 , cp + ddtc 260 , cp + cys 345 , cp + ac-cys 319 , cp + carb-cys 271 , cp + pen 392 , cp + c-nh 299 mg/kg b.wt .
C0001047
ac-cys
C0010654
carb-cys