T 1512 (OTTOKEMI ) o-Tolylmagnesium bromide solution , 2.0 M in diethyl ether CAS-932-31-0 can be used to prepareAn iridium(I) mesityl complex named Ir(o-tolyl)(CO)(dppe).4-(2-Methylphenyl)-4-oxobutanoic acid, a key intermediate for the synthesis of M1 muscarinic selective agonist AC-42 derivatives