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Pirolate structure.png
Systematic (IUPAC) name
ethyl 7,8-dimethoxy-4-oxo-1,4-dihydropyrimido[4,5-b]quinoline-2-carboxylate
Clinical data
Legal status
  • Uncontrolled
Routes Oral
CAS number 55149-05-8
ATC code None
PubChem CID 5361200
ChemSpider 4514698
KEGG D05508
Chemical data
Formula C16H15N3O5 
Molecular mass 329.31 g/mol

Pirolate (CP-32,387) is an antihistamine drug with a tricyclic chemical structure which was patented as an antiallergen.[1][2] It was never marketed and there are very few references to it in the literature.[1]


Pirolate synthesis: Althuis, T. H.; Czuba, L. J.; Hess, H. J.; Kadin, S. B., DE 2418498  (1974).


  1. ^ a b David J. Triggle (1996). Dictionary of Pharmacological Agents. Boca Raton: Chapman & Hall/CRC. ISBN 0-412-46630-9. 
  2. ^ Temple, Davis L. (1980). Drugs affecting the respiratory system: based on a symposium sponsored by the Division of Medicinal Chemistry, at the 175th meeting of the American Chemical Society, Anaheim, California, March 13-16, 1978. New Hope, Pa: The Society. ISBN 0-8412-0536-1.