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What is Efficient Enantiomeric Purity Measurement about?

This study presents a simple and efficient method for determining the enantiomeric purity of racemic mixtures (hemiesters) using a chiral shift agent containing thiourea and tertiary amine. The method leverages 1H NMR spectroscopy to achieve clear separation of methoxy proton signals due to hydrogen bonding interactions, allowing for quick assessment of chiral purity. The results indicate that this approach is effective for various hemiesters, particularly bicyclic ones, and offers a more convenient alterna

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