Correction for irrelevant absorption in multicomponent spectrophotometric assay of riboflavin, formylmethylflavin, and degradation products: kinetic applications.

Abstract:

:In the spectrophotometric assay of multicomponent systems involved in drug degradation studies, some minor or unknown degradation products may be present. These products may interfere in the assay and thus invalidate the results due to their absorption in the range of analytical wavelengths. This interference may be eliminated by the application of an appropriate correction procedure to obtain reliable data for kinetic treatment. The present study is based on the application of linear and non-linear irrelevant absorption corrections in the multicomponent spectrophotometric assay of riboflavin and formylmethylflavin during the photolysis and hydrolysis studies. The correction procedures take into account the interference caused by minor or unknown products and have shown considerable improvement in the assay data in terms of the molar balance. The treatment of the corrected data has led to more accurate kinetic results in degradation studies.

journal_name

AAPS PharmSciTech

journal_title

AAPS PharmSciTech

authors

Ahmad I,Qadeer K,Iqbal K,Ahmed S,Sheraz MA,Ali SA,Mirza T,Hafeez A

doi

10.1208/s12249-013-9998-1

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

1101-7

issue

3

issn

1530-9932

journal_volume

14

pub_type

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