Sayegh, J F Multi-column chromatography of urinary 17-ox osteroids as their 2,4-dinitrophenylhdrazones. [electronic resource] - Acta endocrinologica. Supplementum 1978 - 222-8 p. digital Publication Type: Journal Article ISSN: 0300-9750 Subjects--Topical Terms: 17-Ketosteroids--urineChromatography, LiquidDinitrobenzenesHumansSolvents