Folpet

Folpet is the tradename for the organic compound with the formula C6H4(CO)2NSCCl3. It is a fungicide derived from phthalimide (C6H4(CO)2N-) and trichloromethylsulfenyl chloride. The compound is white although commercial samples can appear brownish. It is structurally related to Captan, which is also a trichloromethylsulfenyl-containing fungicide. 
Resistance.
 folpet resistance is still unheard of due to its multiple effects. However, in 2001 some degree of "cross"-resistance was reported in iprodione-resistant South African "Botrytis cinerea" on grape.