142048 <common-name>SI-109</common-name> <description>SI-109 is an organic compound with the chemical formula C40H44F2N7O9P. SI-109 belongs to the amino acids, peptides, and analogues, a subclass of carboxylic acids and derivatives within the organic compounds. With an average molecular weight of 835.80 g/mol, SI-109 is a heavy molecule. In terms of biological activity, SI-109 acts as an inhibitor of the protein target Signal transducer and activator of transcription 3 (STAT3).</description> <cas>2429877-30-3</cas> <pubchem-id>139600322</pubchem-id> <chemical-formula>C40H44F2N7O9P</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">2026-04-15T18:26:26Z</created-at> <updated-at type="dateTime">2026-05-14T21:06:08Z</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>DB32603</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>CC(=O)N1CC[C@H]2CC[C@H](N2C(=O)[C@H](C1)NC(=O)C1=CC2=C(N1)C=CC(=C2)C(F)(F)P(O)(O)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)NC(C1=CC=CC=C1)C1=CC=CC=C1</moldb-smiles> <moldb-formula>C40H44F2N7O9P</moldb-formula> <moldb-inchi>InChI=1S/C40H44F2N7O9P/c1-23(50)48-19-18-28-13-16-33(38(54)45-30(15-17-34(43)51)36(52)47-35(24-8-4-2-5-9-24)25-10-6-3-7-11-25)49(28)39(55)32(22-48)46-37(53)31-21-26-20-27(12-14-29(26)44-31)40(41,42)59(56,57)58/h2-12,14,20-21,28,30,32-33,35,44H,13,15-19,22H2,1H3,(H2,43,51)(H,45,54)(H,46,53)(H,47,52)(H2,56,57,58)/t28-,30+,32+,33+/m1/s1</moldb-inchi> <moldb-inchikey>HBICZHLVBCLHSV-VUCLUUCHSA-N</moldb-inchikey> <moldb-average-mass type="decimal">835.803</moldb-average-mass> <moldb-mono-mass type="decimal">835.290619349</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp nil="true"/> <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>CHEM137941</chemdb-id> <dsstox-id nil="true"/> <toxcast-id nil="true"/> <stoff-ident-origin nil="true"/> <stoff-ident-id nil="true"/> <susdat-id nil="true"/> <iupac nil="true"/> <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>Organic acids and derivatives</superklass> <klass>Carboxylic acids and derivatives</klass> <subklass>Amino acids, peptides, and analogues</subklass> <paper-count type="integer">138</paper-count> <sync-id>CED0017221</sync-id> <structure-inchikey>HBICZHLVBCLHSV-VUCLUUCHSA-N</structure-inchikey> 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