ketones. If (If) is heated for 48 h at 130 O C the radioactivity is distributed equally between C-1 and C-5. However, the data collected up to the present suggest that two halogen substituents on C-5 are essential for complete and irreversible pentadiene 1,5-halogen-oxygen exchange: the cis-form of
Thin-layer chromatography of tetrazolium salts and their formazans
โ Scribed by J.H. Tyrer; M.J. Eadie; W.D. Hooper
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 566 KB
- Volume
- 39
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
โฆ Synopsis
A satisfactory system for thin-layer chromatography of tetrazolium salts and their formazan reduction products has been devised. The methods developed permit the detection of contaminating conzpouncls in commercial samples of tetrazolium salts. When working with formazans it is necessary to control the conditions of tetrazolium reduction or chromatography may lead to complicated and possibly confusing results.
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๐ SIMILAR VOLUMES
From a thesis &bmittecl~by~MARY H. S~BIZRS in partial fulfillment of'the-requirqments fpr the ~\*egrec of Master-o! Science in, Chemistry at ,Saint Joseph's, Cplloge.
A thin-layer cl~ron~atogral~hic technique using basic alumina layers and cleveloI~ment with acetone-water (S5 :x5 or 9 :I) has been clevised for the discrete separation of salts of compounds containing a single quatcrnary ammonium group, Quaternary ammonium cations were separated on basic alumina la