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===Calycosin-7-O-β-D-glucoside, a melanin biosynthesis inhibitor, is isolated from the methanol extract of astragalus. It showed scavenging activity to DPPH radicals. It is anticipated to be a promising anti-HIV agent. www.bocsci.com/calycosin-7-o-beta-d-glucoside-cas-20633-67-4-item-464343.html
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