Thionine

When both the amines are dimethylated, the product tetramethyl thionine is famous as methylene blue, and the intermediates are Azure C (Monomethyl thionine), Azure A (when one of the amines is dimethylated and the other remains primary amine), and Azure B (Trimethyl thionine). When methylene blue is `polychromed` by ripening (Oxidized in solutio.....
Found on http://en.wikipedia.org/wiki/Thionine

Thionine

• (n.) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.
Found on http://thinkexist.com/dictionary/meaning/thionine/

thionine

(thi´o-nēn) a dark-green powder, purple in solution, used as a metachromatic stain in microscopy.
Found on http://www.encyclo.co.uk/local/21001

Thionine

Thi'on·ine noun [ Greek ... brimstone, sulphur.] (Chemistry) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet .
Found on http://www.encyclo.co.uk/webster/T/45

thionine

Type: Term Pronunciation: thī′ō-nēn Definitions: 1. a dark-green powder, giving a purple solution in water; useful as a basic stain in histology for chromatin and mucin because of its metachromatic properties. Synonyms: Lauth violet
Found on http://www.medilexicon.com/medicaldictionary.php?t=91634
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