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. 2010 May 25;11(5):2229–2240. doi: 10.3390/ijms11052229

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© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — Effect of the concentration of acetic acid on the resolution of the four compounds. (Error bars smaller than the symbols are not shown). 1: chlorogenic acid, 2: caffeic acid, 3: scoparone, 4: rutin; R₁₂ = resolution of chlorogenic acid and caffeic acid; R₂₃ = resolution of caffeic acid and scoparone; R₃₄ = resolution of scoparone and rutin.