a-84,543 a-84,543 a-84543 is a drug developed by abbott, which acts as an agonist at neural nicotinic acetylcholine receptors with high selectivity for the α4β2 subtype. it is widely used in scientific research into the structure and function of this receptor subtype and has been the lead compound for the development of a large family of related derivatives. a-84,543identifiers iupac name 3-pyridine cas number161416-43-9 npubchem cid9794141chemspider7969908 nuniiwsk2xm6rpfchemblchembl84149 ncomptox dashboard (epa)dtxsid00430767 chemical and physical dataformulac11h16n2omolar mass192.257 g·mol−13d model (jsmol)interactive image smiles cn1ccc1coc2cccnc2 inchi inchi=1s/c11h16n2o/c1-13-7-3-4-10(13)9-14-11-5-2-6-12-8-11/h2,5-6,8,10h,3-4,7,9h2,1h3/t10-/m0/s1 nkey:mvljpwpldphkst-jtqlqieisa-n n ny (what is this?) (verify)