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Tolonium chloride

Tolonium chloride
IUPAC name (7-amino-8-methyl- phenothiazin-3-ylidene)- dimethyl-ammonium
Other names Toluidine blue O
CAS number 92-31-9
PubChem 7084
MeSH Tolonium+chloride
Molecular formula C15H16N3S+
Molar mass 270.374 g/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Tolonium chloride (INN, also known as toluidine blue O) is a compound used in histology.

Additional recommended knowledge

Test for lignin

Toluidine blue solution is used in testing for lignin, a complex organic molecule that bonds to cellulose fibres and strengthens and hardens the cell walls in plants. A positive toluidine blue test causes the solution to turn from blue to blue-green. A similar test can be performed with phloroglucinol-HCl solution, which turns red.

Toluidine Blue is often used to identify Mast cells. It is also used to stain proteoglycans and glycosaminoglycans in tissues such as cartilage.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tolonium_chloride". A list of authors is available in Wikipedia.
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