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10.1002/jps.2600530611.abs Several tricycic analogs of the tetracyclines were prepared through the Diels‐Alder reaction. 1,4‐Naphthoquinone was combined with 1‐acetoxy‐1,3‐butadiene to give the adduct, 1‐acetoxy‐1,4,4a,9a‐tetrahydroanthraquinone‐9,10. Hydride reduction of the...
10.1002/jps.2600530619.abs An investigation into the possible use of X‐ray diffraction techniques to analyze intact tablets was made. The analysis of various pharmaceutical compounds in tablet form by X‐ray diffraction was considered. Of those tested, only in glutethimide tablets, where the...
10.1002/jps.2600530630.abs Since certain aromatic compounds in which carboxy and carbethoxy groups are situated para to an amino group possess medicinal value, a number of similar organophosphorus derivatives were prepared. The compounds that were synthesized include three phosphorodiamidic...
10.1002/jps.2600530621.abs Stearic acid–ethylcellulose mixtures were spray congealed using a specially instrumented Niro laboratory model spray dryer. Thirty‐five runs were conducted under various operating conditions. The variables studied included atomizer wheel speed (11,900 to 43,100...
10.1002/jps.2600530622.abs The change of ethylene oxide concentration during the operation of laboratory and production sterilizers is reported. The rate of sorption is high at the beginning and decreases toward the end of a sterilization cycle.
10.1002/jps.2600530623.abs The synthesis of the first of the alkylsydnone carboxylic acids is reported. A brief review of the effects of 3‐isopropylsydnone‐4‐carboxylic acid on urinary output and blood pressure is included.
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