methylthioninium en · NOUN
Etymology
From methyl + thionine + -ium (“quaternary ammonium compound”).
Meanings
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(uncountable) The heterocyclic cation 3,7-bis(dimethylamino)-phenothiazin-5-ium, which is the basis of methylene blue
Methylene blue (MB, methylthioninium chloride) is a phenothiazine that crosses the blood brain barrier and acts as a redox cycler.
2014 February 20, Cliona Stack et al., “Methylene blue upregulates Nrf2/ARE genes and prevents tau-related neurotoxicity”, in Human Molecular Genetics, volume 23, →DOI: