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Published on:November 2019
Indian Journal of Pharmaceutical Education and Research, 2019; 53(4s):s475-s480
Review Article | doi:10.5530/ijper.53.4s.141

Recent Advancements in Spectrophotometric pKa Determinations: A Review


Authors and affiliation (s):

Job Herman Berkhout1, Aswatha Ram HN2,*

1Faculty of Science, Radboud University, Nijmegen, NETHERLANDS.

2Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, INDIA.

Abstract:

The pKa value is a key feature in Absorption, Distribution, Metabolism and Excretion (ADME) of drugs, thus knowing this value is critical in drug development. In this review, pKa values determined in the past decade, using UV-Vis spectrometry, are discussed. To determine the pKa, four methods were applied; Henderson-Hasselbach, Albert-Serjeant, Bates-Schwarzenbach and Spectrometric titrations. This review will show the value of this aged but well-established technique in the past decade, due to its simplicity, accuracy, cost efficiency and reproducibility.

Key words: Albert-Serjeant, Bates-Schwarzenbach, Henderson-Hasselbach, pKa, Spectroscopy, Titrations.

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