Toluidine blue

Toluidine blue
Names
IUPAC name
(7-amino-8-methylphenothiazin-3-ylidene)-dimethylammonium chloride
Other names
Toluidine blue O
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.001.952 Edit this at Wikidata
MeSH Tolonium+chloride
UNII
  • InChI=1S/C15H16N3S.ClH/c1-9-6-13-15(8-11(9)16)19-14-7-10(18(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H/q+1;/p-1 checkY
    Key: HNONEKILPDHFOL-UHFFFAOYSA-M checkY
  • InChI=1/C15H16N3S.ClH/c1-9-6-13-15(8-11(9)16)19-14-7-10(18(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H/q+1;/p-1
    Key: HNONEKILPDHFOL-REWHXWOFAY
  • [Cl-].CN(C)c1ccc2nc3cc(C)c(N)cc3[s+]c2c1
Properties
C15H16N3S+
Molar mass 270.374 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Powder and solution of toluidine blue

Toluidine blue, also known as TBO or tolonium chloride (INN) is a blue cationic (basic) dye used in histology (as the toluidine blue stain) and sometimes clinically.