Objective: To study the chemical constituents of dried fruits of Chaenomeles sinensis (Thouin.) Koehne and provide the evidence for the exploitation and utilization of this plant resources. Methods: Isolation and purification of chemical constituents of Chaenomeles sinensis (Thouin.) Koehne by solvent extraction and chromatography, and their structures were identified by physicochemical properties and spectroscopic analysis. Results and Conclusion: Seven compounds were isolated from the ethanol extr...