Synonyms: 5,10,15,20-Tetra(p-sulfonatophenyl)porphyrin;5,10,15,20-Tetra(sulfophenyl)porphyrin;5,10,15,20-Tetrakis(4-sulfonatophenyl)porphine;5,10,15,20-Tetrakis(4-sulfonatophenyl)porphyrin;5,10,15,20-Tetrakis(4-sulfophenyl)porphine;5,10,15,20-Tetrakis(4-sulfophenyl)porphyrin;5,10,15,20-Tetrakis(sulfophenyl)porphyrin; NSC 177391; TPPS; TPPS(photoreactant); TPPS4; Tetrakis(4-sulfonatophenyl)porphine(2-); WR 247188;meso-Tetra(4-sulfonatophenyl)porphyrin; meso-Tetra(4-sulfophenyl)porphyrin;meso-Tetrakis(4-sulfonatophenyl)porphine;meso-Tetrakis(4-sulfonatophenyl)porphyrin; meso-Tetrakis(4-sulfophenyl)porphine;meso-Tetrakis(4-sulfophenyl)porphyrin;meso-Tetrakis(p-sulfonatophenyl)porphine;meso-Tetrakis(p-sulfonatophenyl)porphyrin;meso-Tetrakis(p-sulfophenyl)porphine; meso-Tetrakis(p-sulfophenyl)porphyrin; a,b,g,d-Tetrakis(4-sulfophenyl)porphine