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.

Nomination Summary for Methylene blue (N89007)

Nominated Substances: Methylene blue, Methylene blue trihydrate

Nomination Date: 03/28/1989

Nominator: NCI

Rationale: Potential for high exposure in animals and humans; lack of adequate long-term toxicity data.

NTP Principles: 3, 4, 6 PRE 90

Agents and Status

The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.

CASRN: 7220-79-3

Agent Name: Methylene blue trihydrate