| http://www.w3.org/ns/prov#value | - porphine tetra-acetate salt; 5,10,15,20-tetrakis-[4-(trimethylammonio)phenyl]-21H,23H-porphine tetra-perchlorate salt; 5,10,15,20-tetrakis-[4-(trimethylammonio)phenyl]-21H,23H-porphine tetrafluoroborate salt; 5,10,15,20-tetrakis-[4-(trimethylammonio)phenyl]-21H,23H-porphine tetra-triflate salt; meso-(N-methyl-X-pyridinium)n -(phenyl)4-n-21H,23H-porphine tetra-p-tosylate salt, where n is an integer
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