1H-Pyrano[3,4-c]pyridin-1-one,3,4-dihydro-5-vinyl- (8CI); Gentianine (6CI); Nicotinic acid, 4-(2-hydroxyethyl)-5-vinyl-,d-lactone (7CI);5-Vinyl-3,4-dihydropyrano[3,4-c]pyridin-1-one
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