321885 <common-name>4-hydroxy-3-[(4-methoxy-2-sulfophenyl)diazenyl]-6-[methyl(2-sulfooxyethylsulfonyl)amino]naphthalene-2-sulfonic acid</common-name> <description>4-hydroxy-3-[(4-methoxy-2-sulfophenyl)diazenyl]-6-[methyl(2-sulfooxyethylsulfonyl)amino]naphthalene-2-sulfonic acid has the chemical formula C20H21N3O14S4. With an average molecular weight of 655.70 g/mol, 4-hydroxy-3-[(4-methoxy-2-sulfophenyl)diazenyl]-6-[methyl(2-sulfooxyethylsulfonyl)amino]naphthalene-2-sulfonic acid is a heavy molecule.</description> <cas>72269-56-8</cas> <pubchem-id>174487</pubchem-id> <chemical-formula>C20H21N3O14S4</chemical-formula> <weight>655.7</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">2026-08-29T21:37:34Z</created-at> <updated-at type="dateTime">2026-08-29T21:37:34Z</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>CN(C1=CC2=C(C(=C(C=C2C=C1)S(=O)(=O)O)N=NC3=C(C=C(C=C3)OC)S(=O)(=O)O)O)S(=O)(=O)CCOS(=O)(=O)O</moldb-smiles> <moldb-formula>C20H21N3O14S4</moldb-formula> <moldb-inchi>InChI=1S/C20H21N3O14S4/c1-23(38(25,26)8-7-37-41(33,34)35)13-4-3-12-9-18(40(30,31)32)19(20(24)15(12)10-13)22-21-16-6-5-14(36-2)11-17(16)39(27,28)29/h3-6,9-11,24H,7-8H2,1-2H3,(H,27,28,29)(H,30,31,32)(H,33,34,35)</moldb-inchi> <moldb-inchikey>GMXYXRBCRFRKJH-UHFFFAOYSA-N</moldb-inchikey> <moldb-average-mass type="decimal" nil="true"/> <moldb-mono-mass type="decimal">654.9906371</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp>0.1</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>CHEM317778</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>4-hydroxy-3-[(4-methoxy-2-sulfophenyl)diazenyl]-6-[methyl(2-sulfooxyethylsulfonyl)amino]naphthalene-2-sulfonic 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>Benzenoids</superklass> <klass>Naphthalenes</klass> <subklass>Naphthalene sulfonic acids and derivatives</subklass> <paper-count type="integer" nil="true"/> <sync-id>CED0272596</sync-id> <structure-inchikey>GMXYXRBCRFRKJH-UHFFFAOYSA-N</structure-inchikey> 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