Retention time prediction for chromatographic enantioseparation by quantile geometry-enhanced graph neural network

Hao Xu, Jinglong Lin, Dongxiao Zhang () and Fanyang Mo ()
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Hao Xu: Peking University
Jinglong Lin: Peking University
Dongxiao Zhang: Eastern Institute of Technology
Fanyang Mo: Peking University

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract The enantioseparation of chiral molecules is a crucial and challenging task in the field of experimental chemistry, often requiring extensive trial and error with different experimental settings. To overcome this challenge, here we show a research framework that employs machine learning techniques to predict retention times of enantiomers and facilitate chromatographic enantioseparation. A documentary dataset of chiral molecular retention times in high-performance liquid chromatography (CMRT dataset) is established to handle the challenge of data acquisition. A quantile geometry-enhanced graph neural network is proposed to learn the molecular structure-retention time relationship, which shows a satisfactory predictive ability for enantiomers. The domain knowledge of chromatography is incorporated into the machine learning model to achieve multi-column prediction, which paves the way for chromatographic enantioseparation prediction by calculating the separation probability. The proposed research framework works well in retention time prediction and chromatographic enantioseparation facilitation, which sheds light on the application of machine learning techniques to the experimental scene and improves the efficiency of experimenters to speed up scientific discovery.

Date: 2023
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DOI: 10.1038/s41467-023-38853-3

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