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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:Lewis acid
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Accession:CHEBI:39143 term browser browse the term
Definition:A molecular entity that is an electron-pair acceptor and therefore able to form a covalent bond with an electron-pair donor (Lewis base), thereby producing a Lewis adduct.
Synonyms:related_synonym: Lewis-Saeure;   accepteur d'une paire d'electrons;   acide de Lewis;   electron acceptor;   electron-pair acceptor

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      CHEBI ontology 20069
        role 20021
          chemical role 19561
            acid 18748
              Lewis acid 3580
                aluminium trichloride + 0
                antimony trichloride 6
                chromium(3+) trichloride + 34
                electrophilic reagent + 3409
                iron trichloride + 43
                iron trichloride hexahydrate 0
                zinc dichloride + 309
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