hemicholinium

hem·i·cho·lin·i·um

(hem'ē-kō-lin'ē-ŭm),
A chemical that interferes with the synthesis of acetylcholine in cholinergic nerve terminals.
References in periodicals archive ?
Acetylcholine is largely inhibited by certain molecules such as dimethyl aminoethanol, hemicholinium, and tetraethyl ammonium chloride.