35218-75-8 39050-26-5 4,4',4'',4'''-(21H,23H-Porphine-5,10,15,20-tetrayl)tetrakis(benzenesulfonic acid) 4,4',4'',4'''-(21H,23H-Porphine-5,10,15,20-tetrayl)tetrakisbenzenesulfonic acid Benzenesulfonic acid, 4,4',4'',4'''-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis- TPPS (photoreactant) TPPS4 Tetraphenylporphine sulfonate WR 247188 meso-Tetra(p-sulfonatophenyl)porphine meso-Tetra-(4-sulfonatophenyl)porphine