Methylene Blue   Molecular Formula: C16H18CIN3S.3H2O Appearance and Structure Methylene blue, also known as methylthioninium chloride, is a compound made up of very dark green-blue crystals or powder, which typically has a bronze lustre to it. Methylene blue dissolves readily in water or alcohol. History of Use Methylene blue was first formulated in 1876 by Heinrich Caro. This was a landmark formulation … Continue reading Methylene Blue – Existing and Future Research