Modak, Brenda published the artcileAntioxidant capacity of flavonoids and a new arylphenol of the resinous exudate from Heliotropium sinuatum, Synthetic Route of 69097-99-0, the publication is Natural Product Research (2003), 17(6), 403-407, database is CAplus and MEDLINE.
From the resinous exudate of Heliotropium sinuatum (family Boraginaceae), a new compound: 4-(3′,5′-dihydroxynonadecyl)phenol, together with eight previously described flavonoids, were isolated and their antioxidant activities were assessed by quenching measurements with ABTS and DPPH cation radicals.
Natural Product Research published new progress about 69097-99-0. 69097-99-0 belongs to tetrahydropyran, auxiliary class Other Aliphatic Heterocyclic,Benzene,Phenol,Ether,Inhibitor, name is 5,7-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)chroman-4-one, and the molecular formula is C16H14O6, Synthetic Route of 69097-99-0.
Referemce:
https://en.wikipedia.org/wiki/Tetrahydropyran,
Tetrahydropyran – an overview | ScienceDirect Topics