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A simple and reliable HPLC method was developed to determine pharmacologically standard marker compounds of Ulmus parvifolia leaves. Standard markers were characterized with neochlorogenic acid (trans-5-O-caffeoylquinic acid, 5-CQA) and chlorogenic acid (trans-3-O-caffeoylquinic acid, 3-CQA) using NMR and UPLC-QTof-MS analysis. A method for qualitative/ quantitative analysis of the leaves extracts were evaluated including two compounds by using HPLC. The stability test of 30% ethanolic extractsdoi:10.3839/jabc.2020.053 fatcat:rpkclppo3nbzxhxturybsexxrm