National Toxicology Program

National Toxicology Program

Testing Status of Microcystin LR - M000056


CASRN: 101043-37-2

Formula: C49-H74-N10-O12

Synonyms/Common Names

  • CN Toxin I
  • Cyanoginosin LA, 5-L-Arginine-
  • Toxin T 17

Known Uses

Toxin produced by algae

Chemical Properties

Toxicity Effects (HSDB)

Planned Carcinogenicity/Toxicity

  • Selected (C20115)  

    Modified One-Generation

    • GD 6 to PND 35 Dose Range Finding (Gavage)  (MOG00056)  Assigned 
      • Female Mice: CD-1 Reg.[Crl:CD1(ICR)]
      • Dose: 0, 50, 250, 500, or 1000 ug/kg/day.
    NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.