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Methods for the isolation and characterization of constituents of natural products: X. New and improved methods for the analysis of carbonyl 2,4-dinitrophenylhydrazones and 2,4-dinitrophenylosazones

โœ Scribed by D.P. Schwartz; Jennie Shamey; C.R. Brewington; O.W. Parks


Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
563 KB
Volume
13
Category
Article
ISSN
0026-265X

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Improved method for the separation and c
โœ Hirohiko Katsuki; Tsuya Yoshida; Chizuko Tanegashima; Shozo Tanaka ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 458 KB

For characterizing keto acids, paper chromatography of their DNPHa is most widely used irrespective of the disadvantages (1)) some of which are as follows: According to the methods reported before 1962, the DNPH formed by the usual method were extracted from water solution with an organic solvent su