Peonidin Peonidin-3-O-glucoside Purple sweet potato color Pyranoanthocyanin Phenolic content in wine C22H23O11 Anthocyanidin Paeonia lactiflora Dark opal basil Purple corn African blue basil Shetland Black potato O-methylated flavonoid Huckleberry Blue corn Vitis vinifera Amelanchier alnifolia Lonicera caerulea Ipomoea List of phytochemicals in food Flavonoid Aronia Anthocyanin List of compounds with carbon number 16 Dictionary of natural phenols and polyphenols molecular formulas