Analytical evaluation of the purity of commercial preparations of Cibacron Blue F3GA and related dyes

Douglas Hanggi, Peter Carr

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The composition and purity of three commercial preparations of the widely used affinity chromatography ligand Cibacron Blue F3GA have been evaluated by TLC and by paired-ion reversed-phase HPLC and were found to contain several chromophoric species. Stepwise synthesis of the reported dye structure showed that only one commercial preparation contained any actual Cibacron Blue F3GA, and that it was present only in minor amounts. In all three preparations the major component appears to be the dichlorotriazinyl precursor of Cibacron Blue F3GA. Commercial samples of the related dyes Procion Blue MX-3G and Procion Blue MX-R are also highly heterogeneous. In addition, our experiments suggest that TLC results must be evaluated carefully to ensure that catalytic surface activity of alumina and silica has not created ghost bands.

Original languageEnglish (US)
Pages (from-to)91-104
Number of pages14
JournalAnalytical Biochemistry
Volume149
Issue number1
DOIs
StatePublished - Aug 15 1985

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