https://www.selleckchem.com/pr....oducts/4-phenylbutyr
97%), stability (RSD less then 2.52%) and recoveries (96.96%-98.52%, RSD less then 3.24%), and no significant differences were observed between the external standard method and the new method as determined by calculating standard method difference. Overall, the study suggests that the simultaneous quantitative analysis of main Q-marker in G. uralensis Fisch with one single marker can be considered good quality criteria for performing quality control of G. uralensis Fisch. © The Author(s) 2020. Published by Oxford Uni