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Negundoside and agnuside are reported as marker constituents for standardization of Vitex negundo (V. negundo) leaves. This is the first report on determination and quantification of negundoside and agnuside by qNMR in the leaves of V. negundo , collected from various regions of India. The developed qNMR method showed good linearity ( r2 ≥ 0.9994),...
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