M 2272 (OTTO) 4-Methoxyphenylmagnesium bromide solution, 0.5 M in THF, CAS 13139-86-1,can be used In the denickelation of porphyrins and to replace the metal center with magnesium. To synthesize a tubulin polymerization inhibitor, 2-Amino-3,4,5-trimethoxybenzophenone.