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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.

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Accession:CHEBI:37317 term browser browse the term
Definition:A lanthanum molecular entity that has formula La.
Synonyms:exact_synonym: lanthanum(2+) ion;   lanthanum(II) cation
 related_synonym: Formula=La;   InChI=1S/La/q+2;   InChIKey=QPRFPZGRQQKMEX-UHFFFAOYSA-N;   La(2+);   SMILES=[La++]
 xref: Gmelin:17246

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19770
    chemical entity 19770
      molecular entity 19768
        transition element molecular entity 16433
          scandium group molecular entity 0
            lanthanum molecular entity 0
              lanthanum(2+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  metal atom 17283
                    transition element atom 16744
                      rare earth metal atom 531
                        lanthanoid atom 531
                          lanthanoid molecular entity 506
                            lanthanum molecular entity 0
                              lanthanum(2+) 0
paths to the root