Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures

Abstract Analysis of small-molecule drug solubility in binary solvents at different temperatures was carried out via several machine learning models and integration of models to optimize. We investigated the solubility of rivaroxaban in both dichloromethane and a variety of primary alcohols at vario...

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Main Authors: Mohammed Alqarni, Ali Alqarni
Format: Article
Language:English
Published: Nature Portfolio 2025-08-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-13090-4
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author Mohammed Alqarni
Ali Alqarni
author_facet Mohammed Alqarni
Ali Alqarni
author_sort Mohammed Alqarni
collection DOAJ
description Abstract Analysis of small-molecule drug solubility in binary solvents at different temperatures was carried out via several machine learning models and integration of models to optimize. We investigated the solubility of rivaroxaban in both dichloromethane and a variety of primary alcohols at various temperatures and concentrations of solvents to understand its behavior in mixed solvents. Given the complex, non-linear patterns in solubility behavior, three advanced regression approaches were utilized: Polynomial Curve Fitting, a Bayesian-based Neural Network (BNN), and the Neural Oblivious Decision Ensemble (NODE) method. To optimize model performance, hyperparameters were fine-tuned using the Stochastic Fractal Search (SFS) algorithm. Among the tested models, BNN obtained the best precision for fitting, with a test R² of 0.9926 and a MSE of 3.07 × 10⁻⁸, proving outstanding accuracy in fitting the rivaroxaban data. The NODE model followed BNN, showing a test R² of 0.9413 and the lowest MAPE of 0.1835. The Polynomial model yielded a lower test R² of 0.8200 and higher error rates, indicating its limitations in unravelling the underlying relationships for the solubility variations. This study shows that advanced machine learning models, particularly BNN and NODE, can predict pharmaceutical solubility and improve crystallization process design and optimization.
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spelling doaj-art-edcc81a8a2544be8b6aa577de09c7b452025-08-20T03:05:22ZengNature PortfolioScientific Reports2045-23222025-08-0115111310.1038/s41598-025-13090-4Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperaturesMohammed Alqarni0Ali Alqarni1Department of Pharmaceutical Chemistry, College of Pharmacy, Taif UniversityDepartment of Oral & Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Taif UniversityAbstract Analysis of small-molecule drug solubility in binary solvents at different temperatures was carried out via several machine learning models and integration of models to optimize. We investigated the solubility of rivaroxaban in both dichloromethane and a variety of primary alcohols at various temperatures and concentrations of solvents to understand its behavior in mixed solvents. Given the complex, non-linear patterns in solubility behavior, three advanced regression approaches were utilized: Polynomial Curve Fitting, a Bayesian-based Neural Network (BNN), and the Neural Oblivious Decision Ensemble (NODE) method. To optimize model performance, hyperparameters were fine-tuned using the Stochastic Fractal Search (SFS) algorithm. Among the tested models, BNN obtained the best precision for fitting, with a test R² of 0.9926 and a MSE of 3.07 × 10⁻⁸, proving outstanding accuracy in fitting the rivaroxaban data. The NODE model followed BNN, showing a test R² of 0.9413 and the lowest MAPE of 0.1835. The Polynomial model yielded a lower test R² of 0.8200 and higher error rates, indicating its limitations in unravelling the underlying relationships for the solubility variations. This study shows that advanced machine learning models, particularly BNN and NODE, can predict pharmaceutical solubility and improve crystallization process design and optimization.https://doi.org/10.1038/s41598-025-13090-4Drug solubilityPolynomial regressionBayesian neural networkNeural oblivious decision ensembleCrystallization process
spellingShingle Mohammed Alqarni
Ali Alqarni
Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
Scientific Reports
Drug solubility
Polynomial regression
Bayesian neural network
Neural oblivious decision ensemble
Crystallization process
title Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
title_full Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
title_fullStr Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
title_full_unstemmed Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
title_short Development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
title_sort development of several machine learning based models for determination of small molecule pharmaceutical solubility in binary solvents at different temperatures
topic Drug solubility
Polynomial regression
Bayesian neural network
Neural oblivious decision ensemble
Crystallization process
url https://doi.org/10.1038/s41598-025-13090-4
work_keys_str_mv AT mohammedalqarni developmentofseveralmachinelearningbasedmodelsfordeterminationofsmallmoleculepharmaceuticalsolubilityinbinarysolventsatdifferenttemperatures
AT alialqarni developmentofseveralmachinelearningbasedmodelsfordeterminationofsmallmoleculepharmaceuticalsolubilityinbinarysolventsatdifferenttemperatures