Pharmaceutical Salts of Enrofloxacin with Organic Acids

Enrofloxacin is a poorly soluble antibacterial drug of the fluoroquinolones class used in veterinary medicine. The main purpose of this work was to investigate the structural and pharmaceutical properties of new enrofloxacin salts. Enrofloxacin anhydrate and its organic salts with tartaric acid, nic...

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Main Authors: Hong Pang, Yu-Bin Sun, Jun-Wen Zhou, Meng-Juan Xie, Hao Lin, Yan Yong, Liang-Zhu Chen, Bing-Hu Fang
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Crystals
Subjects:
Online Access:https://www.mdpi.com/2073-4352/10/8/646
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author Hong Pang
Yu-Bin Sun
Jun-Wen Zhou
Meng-Juan Xie
Hao Lin
Yan Yong
Liang-Zhu Chen
Bing-Hu Fang
author_facet Hong Pang
Yu-Bin Sun
Jun-Wen Zhou
Meng-Juan Xie
Hao Lin
Yan Yong
Liang-Zhu Chen
Bing-Hu Fang
author_sort Hong Pang
collection DOAJ
description Enrofloxacin is a poorly soluble antibacterial drug of the fluoroquinolones class used in veterinary medicine. The main purpose of this work was to investigate the structural and pharmaceutical properties of new enrofloxacin salts. Enrofloxacin anhydrate and its organic salts with tartaric acid, nicotinic acid and suberic acid formed as pure crystalline anhydrous solids. All the crystals were grown from a mixed solution by slow evaporation at room temperature. These products were then characterized by field-emission scanning electron microscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy and differential scanning calorimetry. Further, X-ray single crystal diffraction analysis was used to study the crystal structure. The intermolecular interactions and packing arrangements in the crystal structures were studied, and the solubility of these salts in water was determined using high-performance liquid chromatography. The results show that the new salts of enrofloxacin developed in this study exhibited excellent water solubility.
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spelling doaj.art-4ab391a0c7c248b6bd2ec0c0ca394d732023-11-20T08:04:32ZengMDPI AGCrystals2073-43522020-07-0110864610.3390/cryst10080646Pharmaceutical Salts of Enrofloxacin with Organic AcidsHong Pang0Yu-Bin Sun1Jun-Wen Zhou2Meng-Juan Xie3Hao Lin4Yan Yong5Liang-Zhu Chen6Bing-Hu Fang7National Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaNational Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaNational Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaNational Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaNational Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaGuangdong Dahuanong Animal Health Products Co. Ltd., Yunfu 527400, ChinaGuangdong Dahuanong Animal Health Products Co. Ltd., Yunfu 527400, ChinaNational Laboratory of Safety Evaluation (Environmental Assessment) of Veterinary Drugs, South China Agricultural University, Guangzhou 510000, ChinaEnrofloxacin is a poorly soluble antibacterial drug of the fluoroquinolones class used in veterinary medicine. The main purpose of this work was to investigate the structural and pharmaceutical properties of new enrofloxacin salts. Enrofloxacin anhydrate and its organic salts with tartaric acid, nicotinic acid and suberic acid formed as pure crystalline anhydrous solids. All the crystals were grown from a mixed solution by slow evaporation at room temperature. These products were then characterized by field-emission scanning electron microscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy and differential scanning calorimetry. Further, X-ray single crystal diffraction analysis was used to study the crystal structure. The intermolecular interactions and packing arrangements in the crystal structures were studied, and the solubility of these salts in water was determined using high-performance liquid chromatography. The results show that the new salts of enrofloxacin developed in this study exhibited excellent water solubility.https://www.mdpi.com/2073-4352/10/8/646enrofloxacinsaltscrystal structureorganic acidssolubility
spellingShingle Hong Pang
Yu-Bin Sun
Jun-Wen Zhou
Meng-Juan Xie
Hao Lin
Yan Yong
Liang-Zhu Chen
Bing-Hu Fang
Pharmaceutical Salts of Enrofloxacin with Organic Acids
Crystals
enrofloxacin
salts
crystal structure
organic acids
solubility
title Pharmaceutical Salts of Enrofloxacin with Organic Acids
title_full Pharmaceutical Salts of Enrofloxacin with Organic Acids
title_fullStr Pharmaceutical Salts of Enrofloxacin with Organic Acids
title_full_unstemmed Pharmaceutical Salts of Enrofloxacin with Organic Acids
title_short Pharmaceutical Salts of Enrofloxacin with Organic Acids
title_sort pharmaceutical salts of enrofloxacin with organic acids
topic enrofloxacin
salts
crystal structure
organic acids
solubility
url https://www.mdpi.com/2073-4352/10/8/646
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