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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:arsenous acid
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Accession:CHEBI:49900 term browser browse the term
Definition:An arsenic oxoacid consisting of three hydroxy groups attached to a central arsenic atom.
Synonyms:exact_synonym: trihydrogen trioxoarsenate(3-);   trihydroxidoarsenic;   trioxoarsenic acid
 related_synonym: Arsenic trioxide;   As(OH)3;   Formula=AsH3O3;   H3AsO3;   InChI=1S/AsH3O3/c2-1(3)4/h2-4H;   InChIKey=GCPXMJHSNVMWNM-UHFFFAOYSA-N;   SMILES=O[As](O)O;   TRIHYDROXYARSENITE(III);   arsorous acid
 alt_id: CHEBI:22635;   CHEBI:49899
 xref: CAS:1327-53-3;   CAS:13464-58-9;   DrugBank:DB04456;   Gmelin:1397624;   KEGG:C06697;   KEGG:C13619;   KEGG:D02106
 xref_mesh: MESH:C032793
 xref: PDBeChem:TAS;   UM-BBD_compID:c0532
 cyclic_relationship: is_conjugate_acid_of CHEBI:29242

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 24838
        chemical entity 24808
          atom 24799
            metalloid atom 13542
              arsenic atom 11639
                arsenic molecular entity 11639
                  arsenic oxoacid 3707
                    arsenous acid 3530
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 24838
        subatomic particle 24799
          composite particle 24799
            hadron 24799
              baryon 24799
                nucleon 24799
                  atomic nucleus 24799
                    atom 24799
                      main group element atom 24667
                        p-block element atom 24667
                          chalcogen 23807
                            oxygen atom 23692
                              oxygen molecular entity 23692
                                hydroxides 22944
                                  oxoacid 22175
                                    pnictogen oxoacid 11190
                                      arsenic oxoacid 3707
                                        arsenous acid 3530
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