Re-evaluated data of dissociation constants of alendronic, pamidronic and olpadronic acids

Author:

Boichenko Alexander1,Markov Vadim1,Kong Hoan1,Matveeva Anna2,Loginova Lidia1

Affiliation:

1. 1Department of Chemical Metrology, Kharkov V.N. Karazin National University, 61077, Kharkov, Ukraine

2. 2A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation

Abstract

AbstractThe dissociation constants of (4-amino-1-hydroxybutylidene)bisphosphonic (alendronic) acid, (3-(dimethylamino)-1-hydroxypropylidene)bisphosphonic (olpadronic) acid and (3-amino-1-hydroxypropylidene)bisphosphonic (pamidronic) acid were obtained in aqueous solutions (0.10 M KCl) and micellar solutions of cetylpyridinium chloride (0.10 M CPC) at 25.0°C. With the exception of the third dissociation constant of alendronic acid, the dissociation constants of alendronic, olpadronic and pamidronic acids in aqueous solutions matched literature data. The possibility of sodium alendronate determination by acid-base titration by NaOH solution was theoretically grounded on the basis of re-evaluated data of alendronic acid dissociation constants.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,General Chemistry

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