Imino acids

{
  "id": "MLC-T-CHM-005609",
  "term": "Imino acids",
  "field": "Chemistry",
  "definition": "Carboxylic acids bearing an imino group, =NH, in place of two hydrogens, a sense now discouraged, though the name is still applied to proline and related cyclic amino acids whose nitrogen is a secondary amine inside the ring, which makes it a misnomer. IUPAC regards the name as obsolete for imidic acids, RC(=NR)OH, which are tautomers of amides.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "carboxylic acids",
    "imidic acids"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1343 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/imino-acids/"
}