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A light yellow amorphous solid (compound A̲, 760 mg) was isolated from a silica column chromatography of the crude methanolic leaves extract of Vitex trifolia. It gave a thin layer chromatographic spot (TLC; Rf = 0.80 in chloroform: methanol = 80∶20). Compound ̲ was visible under short UV light and appeared orange under long UV light. Here, the chemical structure for ̲ is proposed. In agreement with...
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