Proline, 4-hydroxyproline, and 3-hydroxyproline are combined with 7-chloro-4-nitrobenzo-2-oxa-I ,3-diazole and the fluorescent derivatives separated by thin-layer chromatography on silica gel prior to spectrofluorometric determination. The method is sensitive to 1 pmol, reproducible, and fast. It al
New method for the differentiation of the isomers of aminophenol
โ Scribed by Samir K. Thabet; Lily Hagopian
- Publisher
- Springer
- Year
- 1965
- Tongue
- English
- Weight
- 81 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0026-3672
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๐ SIMILAR VOLUMES
## Abstract A new objective function for estimating parameters in differential equations, based upon a weighted least squares criterion for the residuals of these equations, is presented. The use of Lobatto quadrature in combination with the collocation technique reduces the original problem to one
A new method for the conversion of the Z-isomer of unsymmetrical substituted bis-methylenesuccinic anhydrides, 'fulgides', to their geometrical E-isomers was achieved by heating the Z-isomer under reflux or a mixture of both isomers in pyridine to give the E-isomer in near quantitative yield.