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One of the most common eye diseases is a burn injury. Hence, one of the pressing challenges in the field of pharmacy today is the development of new ophthalmic medications, specifically eye drops. Researchers from the Department of Pharmaceutical, Organic, and Bioorganic Chemistry at Zaporizhzhia State Medical and Pharmaceutical University, led by Professor I. A. Mazur, have successfully synthesized a novel compound. This compound is a derivative of 1,2,4-triazole, specifically (S)-2,6-diaminohexanoic acid 3-methyl-1,2,4-triazolyl-5-thioacetate. Notably, this compound demonstrates anti-inflammatory, wound-healing, and reparative activities. The aim of the work is to develop a method of quantitative determination of the active substance in Angiolin eye drops by the method of high-performance liquid chromatography. Materials and methods. The research employed a liquid chromatograph equipped with a UV detector. A column Hypersil ODS C-18 measuring 250 by 4.6 millimeters with a particle size of 5 microns was used. Results. It was determined that the angiolin content in the 1 % eye drops in series 1 falls within the range of 0.985 to 1.010 grams. This indicates that, in terms of the active substance content, the studied series complies with the requirements of the State Pharmacopoeia of Ukraine. Conclusions. As a result of the conducted research, a method for quantitatively determining the active substance in Angiolin eye drops using high-performance liquid chromatography was developed.

Throughout human history, cataracts have been one of the leading causes of blindness. For this disease, we studied the market of drugs of domestic and foreign production. The object of our study was the subgroup S10X Other ophthalmic drugs. Employees of the Department of Pharmaceutical Chemistry of Zaporizhzhia State Medical University (ZSMU) together with specialists of the NGO “Pharmatron” was synthesized a new compound, which was named Angiolin. A rational dosage form in the form of eye drops was proposed for the new drug. Since the drops continue to be the most common and widely used in practice dosage form. We have previously selected the optimal content of the active substance in eye drops. As is known from the technological parameters, eye drops must be isotonic, ie in their composition should be added excipients. The aim of our work is to select the concentration of excipients for the manufacture of eye drops Angiolin. Materials and methods. During the work at the Department of Pharmaceutical Chemistry of ZSMU, three solutions of eye drops Angiolin with different composition were prepared, and later the theoretical osmolarity was calculated. Results. Accurate theoretical calculation of the osmolarity of solutions containing substances with high molecular weight, complex total extracts, and highly concentrated solutions is impossible. Since the excipient was used methylcellulose, it was better to perform such a calculation experimentally, through the determination of osmolality. On the basis of the conducted researches, for correction of osmolarity, we were chosen – sodium chloride. Sodium chloride was selected at a concentration of 7.0 g/l, which creates an osmolality of the drug equal to 234.3 mosmol/kg. The estimated value at the same concentration of sodium chloride was 239.56 mosmol/l. The value of osmolarity of eye drops was calculated from it makes 302,18 mosmol/l that was confirmed the correctness of the chosen concentration of sodium chloride as a part of eye drops. Conclusions. Based on the above, we selected the concentration of excipients for the manufacture of eye drops Angiolin.

The eyes are one of the most vulnerable human organs. An important place among all traumatic injuries belongs to burns, which are characterized by a large number of adverse consequences. Today, the pharmaceutical market of Ukraine is mainly occupied by drugs of foreign origin, therefore, the urgent task of modern pharmacy is to create and expand the range of the domestic pharmaceutical market and the relative cheapness of the drug in comparison with other drugs, in a future. The employees of the Department of Pharmaceutical Chemistry of Zaporizhzhia State Medical University (ZSMU), together with specialists from NPO Pharmatron, synthesized a new compound called “Angiolin” ((S)-2,6-diaminohexanoic acid 3-methyl-1,2,4-triazolyl -5-thioacetate). The obtained compound has anti-inflammatory, wound-healing, reparative effect .A rational dosage form in the form of eye drops was proposed and created for the new drug. The aim of the work is to develop a technique for standardizing the active substance in “Angiolin” eye drops ((S)-2,6-diaminohexanoic acid 3-methyl-1,2,4-triazolyl-5-thioacetate) by spectrophotometry. Materials and methods: A certified substance of аngiolin was used in the research (manufacturer: State Enterprise “Plant of Chemical Reagents” of the Scientific and Technological Complex “Institute of Single Crystals” of the National Academy of Sciences of Ukraine, series 2451117). The spectrophotometric method for the analysis of the аngiolin substance was taken as a basis. The studies were carried out using an Optizen POP spectrophotometer, measurements were carried out at a wavelength in the range of 200–300 nm, a cuvette thickness of 10 mm. Results. Studies were performed on six series of 1% eye drops “Angiolin”, which was quantified by spectrophotometric method. It was found that the content of аngiolin in eye drops was in the range of 0.00981–0.01011 g/ml. Thus, in terms of the content of the active substance, the studied series of eye drops meets the requirements of the State Pharmacopoeia. Subsequently, another five series of «Angiolin» eye drops were analyzed, which also met the pharmacopoeial requirements for the content of the active substance (0.00980–0.01015 g/ml). We believe that the developed method for standardizing eye drops is reproducible. Conclusion: In the research, we have developed a method for standardizing the active substance in “Angiolin” eye drops by spectrophotometry. The developed technique is reproducible, accurate, and in the future, after its validation, it can be used in the standardization of the active substance in various dosage forms.

Visual organ injuries are still one of the main causes of blindness and occupational disability. Despite the good protection of the eyeball by the bone walls of the orbit and adnexa oculi, its injuries are 5–10 % of the total number of all damages in peacetime and about 20 % in wartime. Employees of the Department of Pharmaceutical Chemistry of Zaporizhzhia State Medical University (ZSMU) together with the specialists of the SPA “Farmatron” under the supervision of professor I. A. Mazur synthesized a new compound, called Angiolin. The aim of the research is to study the anti-inflammatory, wound-healing, reparative activity of the Angiolin eye drops action during a chemical burn of the cornea rabbits modeling. Materials and methods: The pharmacological efficacy of the prepared Angiolin eye drops in concentrations: 0.5 %, 1.0 %, 1.5 %, 2.0 % and 2.5 % has been studied. All studies were carried out on 40 eyes of 20 Chinchilla breed rabbits of both sexes weighing 2.1–3.5 kg. The chemical burn model was reproduced according to the Obenberger method using 10 % sodium hydroxide solution (application of8 mm blotting paper), exposure time 20 seconds, after preliminary installation anesthesia with 0.5 % Alcaine solution. Results. Based on experimental data, it can be noted that Angiolin eye drops in concentrations: 1.0 %, 1.5 %, 2.0 %, 2.5 % show almost the same pharmacological activity, and 1 % Angiolin eye drops were the most effective, that gives us the opportunity for further study. Conclusions. Angiolin eye drops exhibit high anti-inflammatory, wound healing, reparative activity in the treatment of eye burn. As a result of the study, it was found that 1 % of Angiolin eye drops turned out to be the most effective. The obtained results are an experimental rationale for further study of 1 % Angiolin eye drops.