Thionine

For other uses, see Thionine (disambiguation).
Thionine
Names
Preferred IUPAC name
3,7-Diamino-5λ4-phenothiazin-5-ylium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.611 Edit this at Wikidata
UNII
  • InChI=1S/C12H10N3S/c13-7-1-3-9-11(5-7)16-12-6-8(14)2-4-10(12)15-9/h1-6H,13-14H2/q+1 ☒N
    Key: CBBMGBGDIPJEMI-UHFFFAOYSA-N ☒N
  • C1=CC2=C(C=C1N)[S+]=C3C=C(C=CC3=N2)N
Properties
C12H10N3S+
Molar mass 228.29 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Thionine, also known as Lauth's violet, is the salt of a heterocyclic compound. It was firstly synthesised by Charles Lauth. A variety of salts are known including the chloride and acetate, called respectively thionine chloride and thionine acetate. The dye is structurally related to methylene blue, which also features a phenothiazine core.[1] The dye's name is frequently misspelled with omission of the e, and is not to be confused with the plant protein thionin. The -ine ending indicates that the compound is an amine.[2][3]

  1. ^ Gérard Taurand, "Phenothiazine and Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005.doi:10.1002/14356007.a19_387
  2. ^ Kiernan JA (2001). "Classification and naming of dyes, stains and fluorochromes". Biotech Histochem. 76 (5–6): 261–78. doi:10.1080/bih.76.5-6.261.278. PMID 11871748. S2CID 32479873.
  3. ^ Webster's Third New International Dictionary. G & C Merriam Co. 1976, p.2377.