Schlesinger, Arthur H. published the artcilePreliminary evaluation of some quaternary ammonium salts as phytoxic agents, Recommanded Product: 1-(Cyanomethyl)pyridin-1-ium chloride, the publication is Journal of Agricultural and Food Chemistry (1959), 33-4, database is CAplus.
cf. C.A. 46, 491f. Some 60 quaternary ammonium salts RR1R2R3NX were prepared by standard chem. methods. Many of these salts exhibited considerable phytotoxicity in seed-germination tests. In a series of 1-substituted pyridinium bromides, maximum phytotoxicity was noticed when R was C12 to C14. Other active types of similar compounds are also mentioned. Lack of selectivity towards mono- or dicotyledeuous species is evident from these examples.
Journal of Agricultural and Food Chemistry published new progress about 17281-59-3. 17281-59-3 belongs to pyridine-derivatives, auxiliary class Pyridine,Nitrile,Salt, name is 1-(Cyanomethyl)pyridin-1-ium chloride, and the molecular formula is C7H7ClN2, Recommanded Product: 1-(Cyanomethyl)pyridin-1-ium chloride.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem