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. 2019 Apr 8;24(7):1369. doi: 10.3390/molecules24071369

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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HPLC chromatograms of the CMB propolis (S1-S21) and standard solution (S0): 1. Caffeic acid; 2. p-Coumaric acid; 3. Ferulic acid; 4. Isoferulic acid; 5. 3,4-Dimethoxycinnamic acid; 6. Pinobanksin; 7. Naringenin; 8. Quercetin; 9. Kaempferol; 10. Apigenin; 11. Pinocembrin; 12. Benzyl caffeate; 13. 3-Oacetyl pinobanksin; 14. Chrysin; 15. CAPE; 16. Galangin.