Methylene blue
Methylene Blue, methylthionine chloride or 3,7-bis(dimethylamino)phenothiazin-5-ium chloride is a chemical compound used as a dye and medication for Gram's stain, Wright stain, and the treatment of metoxyhemoglobinemia.
Its molecular formula is C16H18ClN3S.
Its CAS number is 61-73-4: its EC number is 200-515-2 .
