1,9-Dimethyl-methylene Blue

This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition

Issued and maintained by the United States Pharmacopeial Convention (USP)

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C₃₆H₄₆Cl₄N₆OS₂Zn   850.1 CAS RN®: 23481-50-7.—Dark green powder. Use a suitable grade.

[Note—A suitable grade is available from Sigma-Aldrich, www.sigma-aldrich.com.]