phenoxazine dye

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oxazine dye — noun : an azine dye containing at least one fused oxazine ring in which the oxygen atom and the nitrogen atom are in the para or 1,4 positions compare phenoxazine … Useful english dictionary
heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… … Universalium
litmus — /lit meuhs/, n. a blue coloring matter obtained from certain lichens, esp. Roccella tinctoria. In alkaline solution litmus turns blue, in acid solution, red: widely used as a chemical indicator. [1495 1505; earlier lytmos < ON litmosi dye moss,… … Universalium
resazurin — (ˈ)re|zazhərə̇n noun ( s) Etymology: International Scientific Vocabulary resorcinol + azure + in : a blue crystalline dye C12H7NO4 of the phenoxazine class made by the action of nitrous acid on resorcinol and used chiefly as an oxidation… … Useful english dictionary
resorufin — ˌrezōˈrüfə̇n noun ( s) Etymology: International Scientific Vocabulary resorcin + Latin rufus red + International Scientific Vocabulary in more at red : a red brown crystalline dye C12H7NO3 of the phenoxazine class that gives fluorescent red or… … Useful english dictionary

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