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Substance Name: Fibroin
RN: 9007-76-5
UNII: M09888Y92S


  • Fibrous proteins secreted by INSECTS and SPIDERS. Generally, the term refers to silkworm fibroin secreted by the silk gland cells of SILKWORMS, Bombyx mori. Spider fibroins are called spidroins or dragline silk fibroins.
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Names and Synonyms

Name of Substance

  • Fibroin

MeSH Heading

  • Fibroins


  • EINECS 232-705-6
  • UNII-M09888Y92S

Systematic Name

  • Fibroins

Registry Numbers

CAS Registry Number

  • 9007-76-5


  • M09888Y92S

System Generated Number

  • 0009007765