Para aminoacetanilide and {TAIL ~ para nitroacetanilide} can also be used in the presence of {HEAD ~ sodium ferrocyanide} 
Para aminoacetanilide and { TAIL ~ para nitroacetanilide } can also be used in the presence of { HEAD ~ sodium ferrocyanide }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD