CAS Number: 7220-79-3
Molecular Weight: 373.90
Molecular Formula: C16H18ClN3S · 3H2O
IUPAC Name: 3,7-bis(Dimethylamino)-phenothiazin-5-ium chloride
Other Names: Bvasic Blue 9, Urelene blue, Provayblue, Proveblue
Methylene blue (CI 52015) is a heterocyclic aromatic chemical compound with the molecular formula C16H18ClN3S. It has many uses in a range of different fields, such as biology and chemistry. At room temperature it appears as a solid, odorless, dark green powder, that yields a blue solution when dissolved in water. The hydrated form has 3 molecules of water per molecule of methylene blue. Methylene blue should not be confused with methyl blue, another histology stain, new methylene blue, nor with the methyl violets often used as pH indicators.
