Methacholine (CED0002462)

Methacholine is an organic compound with the chemical formula C8H18NO2 and an average molecular weight of 160.23 g/mol. Methacholine belongs to the quaternary ammonium salts, a subclass of organonitrogen compounds within the organic compounds. This compound is associated with nine recorded sources, including electrical and electronic equipment such as electrodes, conductive bodies characterized by conductive materials, and electrically stimulated smoking devices. It is also found in household cleaning and consumer products, specifically pipe accessories, tobacco smoke filters, and non-electric simulated smoking devices. Additionally, it is identified in food preservation within food, food processing and cookware, in indoor air via air, dust and atmospheric transport, and as unclassified diagnostic agents within healthcare, pharmaceuticals and veterinary products. The recorded routes of exposure for methacholine are respiratory and inhalation. In terms of biological activity, methacholine interacts with five recorded protein targets. It acts as an agonist for the muscarinic acetylcholine receptors M1 (CHRM1), M2 (CHRM2), M3 (CHRM3), and M4 (CHRM4), as well as one other protein.