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Methylene Blue
C16H18ClN3xH2O Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride, hydrate (1:1:x);
3,7-Bis(dimethylamino)phenothiazin-5-ium chloride hydrate;
[122965-43-9] Pentahydrate
409.93
[32680-41-4] Trihydrate
373.90
[7220-79-3] Monohydrate
337.90
[67183-68-0] Anhydrous 319.85
[61-73-4]

DEFINITION

Methylene Blue contains NLT 97.0% and NMT 103.0% of methylene blue (C16H18ClN3S), calculated on the dried basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Azure B RS
USP Methylene Blue RS
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