126713 <common-name>Siroheme</common-name> <description>Siroheme is an organic compound with the chemical formula C42H46N4O16. Siroheme belongs to the tetrapyrroles and derivatives, a class of organoheterocyclic compounds within the organic compounds. With an average molecular weight of 914.64 g/mol, Siroheme is a heavy molecule. In biological systems, it has one recorded protein target, which is the sulfite reductase [NADPH] hemoprotein beta-component (cysI).</description> <cas>52553-42-1</cas> <pubchem-id nil="true"/> <chemical-formula>C42H46N4O16</chemical-formula> <weight nil="true"/> <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">2026-04-06T10:26:21Z</created-at> <updated-at type="dateTime">2026-05-14T17:46:37Z</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>DB02832</drugbank-id> <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>C[C@@]1(CC(O)=O)C2=CC3=C(CC(O)=O)C(CCC(O)=O)=C4C=C5N6C(=CC7=C(CCC(O)=O)[C@](C)(CC(O)=O)C8=CC(N2[Fe@]6(N34)N78)=C1CCC(O)=O)C(CC(O)=O)=C5CCC(O)=O</moldb-smiles> <moldb-formula>C42H46N4O16</moldb-formula> <moldb-inchi>InChI=1S/C42H46N4O16/c1-41(17-39(59)60)23(5-9-35(51)52)29-14-27-21(11-37(55)56)19(3-7-33(47)48)25(43-27)13-26-20(4-8-34(49)50)22(12-38(57)58)28(44-26)15-31-42(2,18-40(61)62)24(6-10-36(53)54)30(46-31)16-32(41)45-29/h13-16,23-24,43-44H,3-12,17-18H2,1-2H3,(H,47,48)(H,49,50)(H,51,52)(H,53,54)(H,55,56)(H,57,58)(H,59,60)(H,61,62)</moldb-inchi> <moldb-inchikey>AVBHZKNQGDKVEA-UHFFFAOYSA-N</moldb-inchikey> <moldb-average-mass type="decimal">914.645</moldb-average-mass> <moldb-mono-mass type="decimal">862.2908814</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp>-0.61</logp> <hmdb-id nil="true"/> <chembl-id nil="true"/> <chemspider-id nil="true"/> <structure-image-file-name nil="true"/> <structure-image-content-type nil="true"/> <structure-image-file-size type="integer" nil="true"/> <structure-image-updated-at type="dateTime" nil="true"/> <biodb-id nil="true"/> <synthesis-reference nil="true"/> <structure-image-caption nil="true"/> <chemdb-id>CHEM122606</chemdb-id> <dsstox-id nil="true"/> <toxcast-id nil="true"/> <stoff-ident-origin nil="true"/> <stoff-ident-id nil="true"/> <susdat-id>NS00120250</susdat-id> <iupac>3-[(1R,5S,10S)-9,15,19-tris(2-carboxyethyl)-5,10,14,20-tetrakis(carboxymethyl)-5,10-dimethyl-2,22,23,25-tetraaza-1-ferraoctacyclo[11.9.1.1^{1,8}.1^{3,21}.0^{2,6}.0^{16,23}.0^{18,22}.0^{11,25}]pentacosa-3,6,8,11,13,15,17,19,21(24)-nonaen-4-yl]propanoic acid</iupac> <moldb-polar-surface-area nil="true"/> <moldb-refractivity nil="true"/> <moldb-polarizability nil="true"/> <moldb-rotatable-bond-count nil="true"/> <moldb-acceptor-count nil="true"/> <moldb-donor-count nil="true"/> <moldb-pka-strongest-acidic nil="true"/> <moldb-pka-strongest-basic nil="true"/> <moldb-physiological-charge nil="true"/> <moldb-number-of-rings nil="true"/> <moldb-alogps-logp nil="true"/> <moldb-alogps-logs nil="true"/> <moldb-alogps-solubility nil="true"/> <kingdom>Organic compounds</kingdom> <superklass>Organoheterocyclic compounds</superklass> <klass>Tetrapyrroles and derivatives</klass> <subklass nil="true"/> <paper-count type="integer">1221</paper-count> <sync-id>CED0007970</sync-id> <structure-inchikey>PGYXHNRRBJLFEV-ZCKCUDIUSA-N</structure-inchikey> 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