| http://www.w3.org/ns/prov#value | - The procedure of Example 1 was repeated for reacting 7-(propionamido)-2-(4-carboxyphenyl)-4H-3,1-benzoxazine-4-one with n-propanol, and the reaction product was treated as in Example 1 except that the solvent for recrystallization was a mixture of dioxane and water.
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