Thiazines are organic compounds containing a ring of four carbon, one nitrogen and one sulfur atom. Chemicals that include thiazine are used for dyes, tranquilizers and insecticides. ... Found on http://en.wikipedia.org/wiki/Thiazine
any of three organic compounds of the heterocyclic series, having molecular structures that include a ring of four atoms of carbon and one each of ... Found on http://www.britannica.com/eb/a-z/t/38