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Substance Name: Sleep-promoting factor B
RN: 87140-29-2


  • Extracted from brainstem of rats.
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Names and Synonyms

Name of Substance

  • Sleep-promoting factor B


  • Sleep promoting substance B
  • SPS-B

Systematic Name

  • Sleep-promoting factor B

Registry Numbers

CAS Registry Number

  • 87140-29-2

System Generated Number

  • 0087140292