M 2225 (OTTO) 2-Methylresorcinol, 98% Cas 608-25-3 - used in a series of novel aromatic benziporphyrins, tripyrrane analogs, and C-5-bromo-2-hydroxyphenylcalix[4]-2-methylresorcinarene. M 2225 (OTTO) 2-Methylresorcinol, 98% Cas 608-25-3 - used in the synthesis of aromatic benziporphyrins.