National Toxicology Program

National Toxicology Program

Scientific Review of Riddelliine

CASRN: 23246-96-0
Status: Listed in the Report on Carcinogens (RoC)

Primary Uses or Exposures: Riddelliine is found in a class of plants growing in western United States. Cattle, horses and sheep ingest these toxic plants. Residues have been found in, milk, and honey.

Background Document

No Public Comments


Note on Accessibility: Persons with disabilities or using assistive technology may find some documents are not fully accessible. For assistance, contact Central Data Management or call 919-541-3419 and identify the documents/pages for which access is required. We will assist you in accessing the content of these files. NIEHS has helpful information on accessibility.

NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.