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Home/Compounds/Dye & Pigment/Methylene blue trihydrate
C16H20ClN3OS
337.9 g/mol
Dye & PigmentWarning

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

CAS122965-43-9EC602-909-3
Category
Dye & Pigment
Compound Class
Heterocycle
Primary Use
Biological stain and dye

This compound is a phenothiazinium dye, commonly used as a biological stain. It is supplied as a chloride salt in hydrated form.

Biological stainLaboratory dye

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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CAS 122965-43-9

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Related Compounds

StrongSame Parent

Methylene blue

CAS61-73-4

stain and dye agent

StrongSame Parent

Methylene Blue trihydrate

CAS7220-79-3

Bacteriological stain and dye

ApplicationSame Use

Crystal violet

CAS548-62-9

Biological stain and dye

ApplicationSame Use

Trypan red

CAS574-64-1

Biological stain and dye

ApplicationSame Use

Brilliant green

CAS633-03-4

Biological stain and dye

ReferenceSame Category

P-aminophenol

CAS123-30-8

dye intermediate and photographic developer

ReferenceSame Category

Perylene red

CAS123174-58-3

fluorescent solvent dye

ReferenceSame Category

Acid Blue 161

CAS12392-64-2

acid dye for textiles

Safety Reference

Harmful
Harmful
Warning
H302Harmful if swallowed
Identifiers
IUPAC Name

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

InChIKey

WQVSELLRAGBDLX-UHFFFAOYSA-M

SMILES

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

Synonyms (23)
  • Methylene Blue hydrate, meets analytical specification of BP 73
  • Methylthioninium chloride, European Pharmacopoeia (EP)
  • Basic Blue 9 monohydrate
  • C.i. basic Blue 9 monohydrate
  • Methylene Blue Hydrate (>90%)
  • Methylene Blue hydrate
  • Methylene Blue monohydrate
  • Methylene blue (TN)
  • Zinc free Methylene Blue