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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:thionitrous acid
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Accession:CHEBI:65308 term browser browse the term
Definition:A nitroso compound that is hydrogen sulfide in which one of the hydrogens is replaced by a nitroso group.
Synonyms:exact_synonym: nitrososulfane
 related_synonym: (hydridosulfanido)oxidonitrogen;   Formula=HNOS;   HSN=O;   HSNO;   InChI=1S/HNOS/c2-1-3/h(H,2,3);   InChIKey=ICRHORQIUXBEPA-UHFFFAOYSA-N;   S-nitrosothiol;   SMILES=SN=O;   nitrosomercaptan;   nitrosothiol
 xref: PMID:18327309;   PMID:22741609;   Reaxys:13564781

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19751
    chemical entity 19749
      molecular entity 19749
        inorganic molecular entity 19564
          thionitrous acid 0
Path 2
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  CHEBI ontology 19751
    subatomic particle 19749
      composite particle 19749
        hadron 19749
          baryon 19749
            nucleon 19749
              atomic nucleus 19749
                atom 19749
                  main group element atom 19698
                    p-block element atom 19698
                      pnictogen 18951
                        nitrogen atom 18879
                          nitrogen molecular entity 18879
                            nitroso compound 5040
                              thionitrous acid 0
paths to the root