Certified reference materials

Detection limit

Archaeology

Natural (archaeology)

History

Environmental chemistry

Political science

Chemistry

Certification

Chromatography

Journal of Liquid Chromatography &amp Related Technologies

The preparation of 12 National Certified Reference Materials of active compounds from natural products with countercurrent chromatography (CCC) are reported in this paper. They are kaempferol (1), isorhamnetin (2), quercetin (3), icariin (4), epigallocatechin‐3‐o‐gallate (EGCG) (5), epicatechin‐3‐o‐gallate (ECG) (6), gallocatechin‐3‐o‐gallate (GCG) (7), resveratrol (8), piceid (9), 2,3,5,4′‐tetra hydroxystibene‐2‐o‐D‐glucoside (10), puerarin (11), 3′‐methoxy‐puerarin (12). All of their certified purities were higher than 98%.

Preparation of National Certified Reference Materials of Active Compounds from Natural Products by CCC