Pyl W, Giebelmann R
Arch Exp Veterinarmed. 1978;32(4):601-2.
Chlorocholine chloride, diquate, and paraquate may be precipitated in aqueous solution with sodium tetraphenylborate. The precipitates are soluble in nitromethane and diethylketone. Acid fluxing agents have to be used for thin-layer chromatography with silica gel G.