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Lichtinduzierter Abbau des 4-n-Butyl-1.2-diphenylpyrazolidin-3.5-dions (Phenylbutazon)

✍ Scribed by Prof. Dr. Dr. med. Johannes Reisch; Karl-Günter Weidmann; Joachim Triebe


Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
531 KB
Volume
310
Category
Article
ISSN
0365-6233

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📜 SIMILAR VOLUMES


Synthesis of 3 or 5[14C] 4-butyl-1, 2-di
✍ S. Stavchansky; H. B. Kostenbauder 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 French ⚖ 136 KB

## Abstract The condensation of 1 or 3 [^14^C] n‐butylmalonate diethyl ester (III) with hydrazobenzene (IV) yields up to 90 per cent of 3 or 5 [^14^C] 4‐butyl‐1, 2‐diphenyl‐3, 5‐pyrazolidinedione, if n‐butyl alcohol is used as a solvent and the corresponding sodium alcoholate as a condensing agent

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particle sizes at pH 0, 1, and 2 ; the precipitates settle quickly and are easy to wash. Particle size, surface characteristics,['] bulk density, and electrochemical properties['"' of the product depend strongly on the p H value during the precipitation (Fig. 1, left and middle). The properties of t