356528 <common-name>5,10,15,20-tetrakis(1-methyl-2h-pyridin-4-yl)-21,23-dihydroporphyrin</common-name> <description>5,10,15,20-tetrakis(1-methyl-2h-pyridin-4-yl)-21,23-dihydroporphyrin is a chemical compound with the formula C44H42N8. With an average molecular weight of 682.90 g/mol, 5,10,15,20-tetrakis(1-methyl-2h-pyridin-4-yl)-21,23-dihydroporphyrin is a heavy molecule.</description> <cas nil="true"/> <pubchem-id>135741607</pubchem-id> <chemical-formula>C44H42N8</chemical-formula> <weight>682.9</weight> <appearance nil="true"/> <melting-point nil="true"/> <boiling-point nil="true"/> <density nil="true"/> <solubility nil="true"/> <specific-gravity nil="true"/> <flash-point nil="true"/> <vapour-pressure nil="true"/> <route-of-exposure nil="true"/> <target nil="true"/> <mechanism-of-toxicity nil="true"/> <metabolism nil="true"/> <toxicity nil="true"/> <lethaldose nil="true"/> <carcinogenicity nil="true"/> <use-source nil="true"/> <min-risk-level nil="true"/> <health-effects nil="true"/> <symptoms nil="true"/> <treatment nil="true"/> <created-at type="dateTime">2026-09-01T02:30:10Z</created-at> <updated-at type="dateTime">2026-09-01T02:30:10Z</updated-at> <interacting-proteins nil="true"/> <wikipedia nil="true"/> <uniprot-id nil="true"/> <kegg-compound-id nil="true"/> <omim-id nil="true"/> <chebi-id nil="true"/> <biocyc-id nil="true"/> <ctd-id nil="true"/> <stitch-id nil="true"/> <drugbank-id nil="true"/> <pdb-id nil="true"/> <actor-id nil="true"/> <organism nil="true"/> <export type="boolean">true</export> <metabolizing-proteins nil="true"/> <transporting-proteins nil="true"/> <moldb-smiles>CN1CC=C(C=C1)C2=C3C=CC(=C(C4=NC(=C(C5=CC=C(N5)C(=C6C=CC2=N6)C7=CCN(C=C7)C)C8=CCN(C=C8)C)C=C4)C9=CCN(C=C9)C)N3</moldb-smiles> <moldb-formula>C44H42N8</moldb-formula> <moldb-inchi>InChI=1S/C44H42N8/c1-49-21-13-29(14-22-49)41-33-5-7-35(45-33)42(30-15-23-50(2)24-16-30)37-9-11-39(47-37)44(32-19-27-52(4)28-20-32)40-12-10-38(48-40)43(36-8-6-34(41)46-36)31-17-25-51(3)26-18-31/h5-21,23,25,27,45,48H,22,24,26,28H2,1-4H3</moldb-inchi> <moldb-inchikey>FRDRBZVVFVGENG-UHFFFAOYSA-N</moldb-inchikey> <moldb-average-mass type="decimal" nil="true"/> <moldb-mono-mass type="decimal">682.3532434</moldb-mono-mass> <origin 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