本研究考察了非布索坦(FBX)在各种单溶剂中的溶解度和热力学,包括“水”,甲醇(MeOH),乙醇(EtOH),异丙醇(IPA),1-丁醇(1-BuOH),2-丁醇(2-BuOH),乙二醇(EG),丙二醇(PG),聚乙二醇-400(PEG-400),乙酸乙酯(EA),Transcutol-HP(THP),和二甲基亚砜(DMSO)”在298.2-318.2K和101.1kPa下。FBX的溶解度是使用摇瓶法测定的,并与“vannotHoff,Buchowski-Ksiazczakλh,和Apelblat模型。"Van'tHoff的总误差值,Buchowski-Ksiazczakλh,Apelblat模型记录为1.60、2.86和1.14%,分别。在318.2K下,FBX在PEG-400中的最大摩尔分数溶解度为3.06×10−2,然而,在298.2K的水中,至少一个是1.97×10-7。FBX的溶解度随温度而增加,在不同的单溶剂中遵循的顺序为PEG-400(3.06×10-2)>THP(1.70×10-2)>2-BuOH(1.38×10-2)>1-BuOH(1.37×10-2)>1×10-BuOH(1.10×10-2FBX-PEG-400具有最强的溶质-溶剂相互作用。表观热力学分析揭示FBX溶解在所研究的所有单溶剂中是“吸热和熵驱动的”。基于这些发现,PEG-400似乎是FBX溶解度的最佳共溶剂。
This study examines the solubility and thermodynamics of febuxostat (FBX) in a variety of mono solvents, including “water, methanol (MeOH), ethanol (EtOH), isopropanol (IPA), 1-butanol (1-BuOH), 2-butanol (2-BuOH), ethylene glycol (EG), propylene glycol (PG), polyethylene glycol-400 (PEG-400), ethyl acetate (EA), Transcutol-HP (THP), and dimethyl sulfoxide (DMSO)” at 298.2−318.2 K and 101.1 kPa. The solubility of FBX was determined using a shake flask method and correlated with “van’t Hoff, Buchowski-Ksiazczak λh, and Apelblat models”. The overall error values for van’t Hoff, Buchowski-Ksiazczak λh, and Apelblat models was recorded to be 1.60, 2.86, and 1.14%, respectively. The maximum mole fraction solubility of FBX was 3.06 × 10−2 in PEG-400 at 318.2 K, however the least one was 1.97 × 10−7 in water at 298.2 K. The FBX solubility increased with temperature and the order followed in different mono solvents was PEG-400 (3.06 × 10−2) > THP (1.70 × 10−2) > 2-BuOH (1.38 × 10−2) > 1-BuOH (1.37 × 10−2) > IPA (1.10 × 10−2) > EtOH (8.37 × 10−3) > EA (8.31 × 10−3) > DMSO (7.35 × 10−3) > MeOH (3.26 × 10−3) > PG (1.88 × 10−3) > EG (1.31 × 10−3) > water (1.14 × 10−6) at 318.2 K. Compared to the other combinations of FBX and mono solvents, FBX-PEG-400 had the strongest solute-solvent interactions. The apparent thermodynamic analysis revealed that FBX dissolution was “endothermic and entropy-driven” in all mono solvents investigated. Based on these findings, PEG-400 appears to be the optimal co-solvent for FBX solubility.