Word: diazo
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...Dallas this week, an encouraging advance on the drug front was jointly announced by Sloan-Kettering, the Mellon Institute and Parke, Davis & Co. Their newest drug: "D.O.N." (for 6-diazo-s-oxo-l-norleucine), which effectively inhibits the formation of nucleic acid in mouse cancer cells, but causes negligible harm to healthy cells...
...treated film, there is no surface emulsion and no silver. Instead, a strip of cellophane is thoroughly impregnated with a mixture of "diazo" compounds which are closely related to dyes, but are only a faint yellow in color. Wherever light strikes, the diazo compounds are quickly and effectively bleached. Developing and fixing are combined in a single operation (exposure of the film to ammonia fumes), which may be done in subdued daylight. This exposure does not change the portions of the film that light has reached, but the ammonia turns the unexposed diazo compound red (or some other color, depending...
...Chemical Colloquium. "Constitution of Aliphatic Diazo Compounds," Mr. L. L. Steele, Coolidge Memorial Laboratory...