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Substance Name: Epithelium-derived relaxant factor
RN: 114899-31-9


  • Biological factors released by airway epithelium; modulates the responsiveness of the underlying smooth muscle to spasmogens; may be a cyclooxygenase product of arachidonic acid metabolism.
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Names and Synonyms

Name of Substance

  • Epithelium-derived relaxant factor


  • EpDRF
  • Epithelium-derived relaxant factor

Systematic Name

  • Epithelium-derived relaxant factor

Registry Numbers

CAS Registry Number

  • 114899-31-9

System Generated Number

  • 0114899319