Synonyms: Cobalt,[5,10,15,20-tetra-p-tolylporphinato(2-)]- (8CI); Cobalt,[5,10,15,20-tetrakis(4-methylphenyl)-21H,23H-porphinato(2-)-N21,N22,N23,N24]-,(SP-4-1)-; 21H,23H-Porphine, 5,10,15,20-tetrakis(4-methylphenyl)-, cobaltcomplex; 21H,23H-Porphine, cobalt deriv.;(5,10,15,20-Tetra-p-tolylporphinato)cobalt; (Tetra-p-tolylporphyrinato)cobalt;(meso-Tetra-p-tolylporphinato)cobalt; Cobalt tetra-p-tolylporphyrin;[meso-5,10,15,20-Tetra-p-tolylporphinato(2-)]cobalt