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Avseiko M.V., Yarantseva N.D.
Chemical method for disposal of pharmaceutical waste of angiotensin-converting-enzyme inhibitor group
Belarusian State Medical University, Minsk, Republic of Belarus

Vestnik VGMU. 2021;20(1):99-110.

Objectives. To develop a method for chemical neutralization of pharmaceutical waste, as well as to assess its effectiveness and environmental safety.
Material and methods. The substances of captopril, lisinopril, enalapril, perindopril and ramipril were used as samples for testing the proposed disposal method. The chemical inactivation of drugs pharmacophores was carried out. The structure of the products obtained in the course of destruction has been established experimentally, and the efficiency of waste neutralization has been proved by the instrumental method of analysis – giant Raman spectroscopy. The toxicity of the initial compounds, as well as the structures obtained during destruction was determined based on the calculation of the semi-lethal dose (LD50) for rats on oral administration using the GUSAR Rat acute toxity computer simulation software package. The calculation of the partition coefficient in the octanol-water system (logPow) for the analyzed substances was carried out using the Molinspiration program.
Results. After carrying out the destruction reactions of the analyzed substances, there were no peaks in the spectra at frequencies characteristic of the carboxyl group, which confirms the effectiveness of the chemical method for disposing drugs. Ecotoxicological characteristics, such as the value of the semi-lethal dose and the partition coefficient in the octanol-water system, of degradation products also have more favorable values in comparison with the initial substances.
Conclusions. The possibility to use the chemical method for the disposal of pharmaceutical waste of the drugs group inhibiting angiotensin-converting-enzyme has been proved.
Key words: pharmaceutical waste, disposal, environmental safety, captopril, lisinopril, enalapril, perindopril, ramipril.


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Information about authors:
Avseiko M.V. – senior lecturer of the Chair of Pharmaceutical Chemistry, Belarusian State Medical University;
Yarantseva N.D. – Candidate of Pharmaceutical Sciences, associate professor, head of the Chair of Pharmaceutical Chemistry, Belarusian State Medical University.

Correspondence address: Republic of Belarus, 220116, Minsk, 83 Dzerzhinskogo ave., Belarusian State Medical University, Chair of Pharmaceutical Chemistry. E-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра. – Natalia D. Yarantseva.

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