Studying of gas chromatographic behaviors of phenolic compounds is submitted as retention times data and chromatograms . This phenolic compounds usually are used as pharmaceuticals preservatives. The determination process of methyl para hydroxy benzoate is included two steps: 1st step is separation by extraction of methyl paraben from insulin preparations and 2nd step is gas chromatographic quantification.
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Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.