Acetylcholine chloride (ACh chloride) is a common neurotransmitter found in the central and peripheral nerve system.
References:
[1]. Pepeu, G. and P. Blandina, The acetylcholine, GABA, glutamate triangle in the rat forebrain. J Physiol Paris, 1998. 92(5-6): p. 351-5.
[2]. Israel, M. and Y. Dunant, Acetylcholine release and the cholinergic genomic locus. Mol Neurobiol, 1998. 16(1): p. 1-20.
[3]. Lei, X., et al., Effects of acetylcholine chloride on intracellular calcium concentration of cultured sweat gland epithelial cells. Arch Dermatol Res, 2008. 300(7): p. 335-41.