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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:hydrogen sulfide
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Accession:CHEBI:16136 term browser browse the term
Definition:A sulfur hydride consisting of a single sulfur atom bonded to two hydrogen atoms. A highly poisonous, flammable gas with a characteristic odour of rotten eggs, it is often produced by bacterial decomposition of organic matter in the absence of oxygen.
Synonyms:exact_synonym: dihydridosulfur;   sulfane
 related_synonym: Formula=H2S;   H2S;   HYDROSULFURIC ACID;   InChI=1S/H2S/h1H2;   InChIKey=RWSOTUBLDIXVET-UHFFFAOYSA-N;   SMILES=[H]S[H];   Schwefelwasserstoff;   Sulfide;   [SH2];   acide sulfhydrique;   dihydrogen monosulfide;   dihydrogen sulfide;   hydrogen monosulfide;   hydrogen sulphide;   hydrogene sulfure;   sulfure d'hydrogene
 alt_id: CHEBI:13356;   CHEBI:14414;   CHEBI:24639;   CHEBI:43058;   CHEBI:45489;   CHEBI:5787
 xref: Beilstein:3535004;   CAS:7783-06-4;   Drug_Central:4260;   Gmelin:303;   KEGG:C00283;   KNApSAcK:C00007266
 xref_mesh: MESH:D006862
 xref: MolBase:1709;   PDBeChem:H2S;   PMID:11788560;   PMID:14654297;   PMID:15003943;   PMID:15607739;   PMID:16446402;   PMID:18098324;   PMID:18524810;   PMID:18948540;   PMID:19695225;   PMID:22004989;   PMID:22378060;   PMID:22448627;   PMID:22473176;   PMID:22486842;   PMID:22520971;   PMID:22787557;   UM-BBD_compID:c0239;   Wikipedia:Hydrogen_sulfide
 cyclic_relationship: is_conjugate_acid_of CHEBI:29919;   is_conjugate_base_of CHEBI:30488

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19787
    chemical entity 19787
      molecular entity 19784
        main group molecular entity 19672
          gas molecular entity 17546
            hydrogen sulfide 2046
              sulfanediyl group 0
              sulfenic acid + 0
              thiol group + 1938
              thioxo group 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19787
    subatomic particle 19784
      composite particle 19784
        hadron 19784
          baryon 19784
            nucleon 19784
              atomic nucleus 19784
                atom 19784
                  main group element atom 19672
                    main group molecular entity 19672
                      s-block molecular entity 19430
                        hydrogen molecular entity 19420
                          hydrides 18686
                            inorganic hydride 17411
                              chalcogen hydride 2425
                                sulfur hydride 2046
                                  hydrogen sulfide 2046
                                    sulfanediyl group 0
                                    sulfenic acid + 0
                                    thiol group + 1938
                                    thioxo group 0
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