Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

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)

Modified One-Generation

  • GD 6 to PND 35 Dose Range Finding (Gavage)  (MOG00056)  On Test 
    • Female Mice: CD-1 Reg.[Crl:CD1(ICR)]
    • Dose: 0, 50, 250, 500, or 1000 ug/kg/day.

Genetic Toxicology

  • Micronucleus  (G00056B)  On Test 
    • Mice: CD-1 Reg.[Crl:CD1(ICR)]
  • Micronucleus  (G00056)  On Test 
    • Male Mice
    • Mice: CD-1 Reg.[Crl:CD1(ICR)]