Methylene Blue Anhydrous

Overview

Methylene Blue Anhydrous is a small molecule active pharmaceutical ingredient (ChEMBL CHEMBL405110).

Patent & exclusivity (US)

Per the FDA Orange Book (12 approved US products), the latest listed US patent on Methylene Blue Anhydrous expires — and exclusivity 8 Jan 2027. Generic API sourcing typically opens up once these lapse.

Chemical identity

IUPAC name

[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride

Canonical SMILES

CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]

InChIKey

CXKWCBBOMKCUKX-UHFFFAOYSA-M