Oxazine is a related term of dihydrooxazine.

In organic compound|lang=en terms the difference between oxazine and dihydrooxazine

is that oxazine is (organic compound) any unsaturated six-membered heterocycle containing four carbon atoms, one oxygen, one nitrogen atom and two double bonds while dihydrooxazine is (organic compound) any six-membered unsaturated heterocycle containing four carbon atoms, one oxygen and one nitrogen atoms and one double bond.

As nouns the difference between oxazine and dihydrooxazine

is that oxazine is (organic compound) any unsaturated six-membered heterocycle containing four carbon atoms, one oxygen, one nitrogen atom and two double bonds while dihydrooxazine is (organic compound) any six-membered unsaturated heterocycle containing four carbon atoms, one oxygen and one nitrogen atoms and one double bond.