Methylene Blue
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C16H18CIN3S. 3H20 373.90 CAS RN®: 7220-79-3.-Dark green crystals or a crystalline powder, having a bronzelike luster. One g dissolves in about 25 mL of water and in about 65 mL of alcohol. Soluble in chloroform. Use a suitable grade with a dye content of not less than 85%.
