Polarographic reduction of 3-O-methylpyridoxal 5'-phosphate

Abstract

The polarographic reduction of 3-O-methyl-pyroxidal 5'-phosphate has been studied as a function of pH. The reduction of the aldehyde group by a two electrons process occurs in all conditions studied. The rate of interconversion between the free and hydrate forms of the carbonyl group has been computed. This reaction is acid-base catalyzed. The other reactions (proton transfers) that precede the electrodic reaction are very much faster. The results are compared with those previously obtained for pyridoxal 5'-phosphate.