6091-11-8 AR-45 Physostigmine methiodide Physostigmine, methiodide Pyrrolo(2,3-b)indolium, 1,2,3,3a,8,8a-hexahydro-1,1,3a,8(or 1,3a,8,8)-tetramethyl-5-(((methylamino)carbonyl)oxy)-, iodide, (3aS-cis)-