Tolonium Chloride

**Definition:** A phenothiazine that has been used as a hemostatic, a biological stain, and a dye for wool and silk. Tolonium chloride has also been used as a diagnostic aid for oral and gastric neoplasms and in the identification of the parathyroid gland in thyroid surgery.

**Tree numbers:** - D02.886.369.869 - D03.633.300.783.869

**Synonyms:** - Toluidine Blue O - Toluidine Blue