Acetylcholine iodide is a neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.

TSPC is an inhibitor for GA perception by in vitro and in planta evaluations.

Heliotrine N-oxide is the pyrrolizidine alkaloid (PA) N-oxide counterpart of Heliotrine. It induces the generation of pyrrolic DNA adducts, potentially initiating PA-induced liver tumors in vivo.