oxazine meaning

/okˈsə-zēn/
  noun
  Any of several isomeric compounds having the formula C₄H₅NO, with the nitrogen, oxygen and carbon atoms arranged in a ring
  ORIGIN: oxy-², and azine

[Medicine]
n : any of several parent compounds C₄H₅NO containing a ring composed of four carbon atoms, one oxygen atom, and one nitrogen atom

• oxazine dye:    [Medicine]n : a dy ...

Examples

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1. The structure of phenoxazine consists of an oxazine fused to two benzene rings.
2. It is classified as an oxazine dye.
3. A commercially available dihydro-1, 3-oxazine is a reagent in the Meyers synthesis for aldehydes.
4. The starting compound is a dihydro-1, 3-oxazine with an alkyl group in the 2 position.
5. By extension, the derivatives are also referred to as oxazines; examples include ifosfamide and morpholine ( tetrahydro-1, 4-oxazine ).