On the synthesis and identification of the epinephrin metabolite 4-hydroxy-3-methoxy-dl-mandelic acid

Add time:08/25/2019    Source:sciencedirect.com

An improved synthesis of the epinephrin metabolite, 4-hydroxy-3-methoxy-dl-madelic acid (HMMA), is described starting with 2-methoxyphenol and glyoxylic acid. The azo dyes derived from HMMA by condensation with the diazonium salts of p-nitroaniline and of sulphanilic acid have been prepared and characterized and are shown to be identical with the corresponding azo dyes derived from 2-methoxyphenol. The elimination of an oxyacetic acid group from HMMA occurs in the course of azo dye formation and may lead to ambiguities in the identification and quantitation of HMMA and other phenolic compounds in biological materials.

We also recommend Trading Suppliers and Manufacturers of DL-MANDELIC ACID SODIUM SALT (cas 114-21-6). Pls Click Website Link as below: cas 114-21-6 suppliers

Prev:Enantiomeric and racemic effect of tartaric acid on polysulfone membrane during crystal violet dye removal by MEUF process
Next:Simple dilute-and-shoot method for urinary vanillylmandelic acid and homovanillic acid by liquid chromatography tandem mass spectrometry)