Sentence Examples


  • LAEVULINIC ACID (3-acetopropionic acid), C 5 H 8 0 3 or CH 3 CO CH 2 CH 2 CO 2 H, a ketonic acid prepared from laevulose, inulin, starch, &c., by boiling them with dilute hydrochloric or sulphuric acids.
  • H HN CEH?Chch C(Ch3)N.Cs The ketonic esters under like treatment yield oxypyrimidines, whilst if cyanacetic ester be employed then amino-oxypyrimidines are obtained.
  • The 2.6-diketo-tetrahydropyrimidines or uracils may be considered as the ureides of /-aldehydo, and 0-ketonic acids.
  • The carbonyl group is not ketonic in character since it yields neither an oxime nor hydrazone.
  • Compounds containing an oxy in addition to an aldehydic or ketonic group) undergo both condensation and oxidation when treated with phenylhydrazine, forming compounds known as osozones; these are of great importance in characterizing the sugars (q.v.).

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