National Toxicology Program

National Toxicology Program

Testing Status of Azure B - M060109


CASRN: 531-55-5

Formula: C15-H16-N3-S.Cl

Synonyms/Common Names

  • 3-(Dimethylamino)-7-(methylamino)-phenothiazin-5-ium chloride
  • Methylene azure B
  • Trimethylthionine chloride

Known Uses

Metabolite of methylene blue

Chemical Properties

Toxicity Effects (HSDB)

Genetic Toxicology

  • Salmonella  (A44717)  Completed 
    •  Positive 
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.