5,7-二羟基-2-[4-羟基-3-(3-甲基-2-丁烯-1-基)苯基]-3,6-二甲氧基-4H-1-苯并吡喃-4-酮价格, 5,7,4-Trihydroxy-3,6-dimethoxy-3-prenylflavone对照品, CAS号:959421-20-6