oxoacid derivative imidic acid chebi_ontology imidic acids CHEBI:48377 imidic acid imino acids Compounds derived from oxoacids R<small>_<em>k</em></small>E(=O)<small>_<em>l</em></small>(OH)<small>_<em>m</em></small> (<em>l</em> ≠ 0) by replacing =O by =NR; thus tautomers of amides. In organic chemistry an unspecified imidic acid is generally a carboximidic acid, RC(=NR)(OH). nitrogen molecular entity