A crystalline compound,C15H10O2,the parent substance of a number of important yellow pigments,occurring on the leaves or in the stems and seed capsules of many primroses.

• 黄酮一种存在于各种樱草的叶子或茎以及种囊中的晶状粉末，C15H10O2，是许多重要黄色颜料的原料。