Newton, M G Crystal and molecular structure of a dioxadiazaspirophosphorane derived from (minus)-ephedrine. [electronic resource] - Journal of the American Chemical Society Oct 1974 - 6888-92 p. digital Publication Type: Journal Article ISSN: 0002-7863 Standard No.: 10.1021/ja00829a013 doi Subjects--Topical Terms: Aza CompoundsCrystallographyEphedrineOrganophosphorus CompoundsPhosphoranesSpiro Compounds