130736-65-1 2-(4-Morphinyl)-8-(3-pyridinylmethoxy)-4H-1-benzopyran-4-one 2-(4-Morpholinyl)-8-(3-pyridinylmethoxy)-4H-1-benzopyran-4-one 4H-1-Benzopyran-4-one, 2-(4-morphinyl)-8-(3-pyridinylmethoxy)- U 86983 U-86983