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10.1002/jps.2600620822.abs A new procedure for the rapid quantitative analysis of quinidine in mixtures of quinidine and hydroquinidine is described. The method is based upon measurement of the NMR spectrum of these compounds in deuterated chloroform, using 2,3,5‐tri‐bromothiophene as an...
10.1002/jps.2600620816.abs An equilibrium sorption study on the ethanol‐water‐polyurethane system over an extended ethanol concentration range was conducted by means of thermal gravimetric analysis, GLC, and mass spectrometry. From a single dynamic experiment, the equilibrium solubility in...
10.1002/jps.2600620841.abs A series of five 1‐(arylsulfonyl)‐3,5‐dialkyl‐s‐triazine‐2,4,6‐(1H,3H,5H)‐triones was synthesized by the base‐catalyzed reaction of arylsulfonamides with alkyl isocyanates. The compounds were tested for apomorphine antagonism in mice, diuretic activity...
10.1002/jps.2600620845.abs An attempt was made to prepare p‐aminophenylpropyl‐trimethylammonium iodide (a potential ganglionic stimulant) by a route involving the Clemmensen reduction of 3‐dimethylamino‐1‐p‐nitrophenylpropan‐1‐one. The main product was the trans‐isomer of...
10.1002/jps.2600620831.abs A phytochemical examination of Couroupita amazonica (Lecythidaceae) led to the isolation of β‐amyrin and ellagic acid.
10.1002/jps.2600620842.abs Ketoxime acetates function as typical substrates for acetylcholinesterase. Several 3‐pyridinium ketoxime esters have potential utility for spectrophotometric studies with the enzyme. Each is highly water soluble and gives a large change in absorbance upon hydrolysis....
10.1002/jps.2600620805.abs Binding of demeclocycline and oxytetracycline to bovine serum albumin was studied using fluorescent methods. The mechanism of binding for tetracyclines is shown to be hydrophobic. The number of binding sites and the equilibrium constants were calculated over a range of...
10.1002/jps.2600620807.abs Rank‐order correlations are demonstrated among dissolution, disintegration, and several measures of bioavailability for tablets of aminosalicylic acid and its salts. The correlation between disintegration time and the percent of the dose excreted in the urine is...
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