储存温度：室温；分子式：C15H10O6；分子量：286.24；别名：6-Hydroxyapigenin; 4',5,6,7-Tetrahydroxyflavone；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；；运输条件：ambient conditions；Commodity description：oxygen-heterocyclic compound；Occurrence：Citrus sp. Oroxylum sp. Plantago sp. Scutellaria sp.；

储存温度：室温；分子式：C38H60O18；分子量：804.89；别名：Stevioside a4；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；Special Notes：Because of its hygroscopicity this substance has been prepacked and is available in 10 mg portions only. Orders of larger quantities will be delivered as the corresponding number of 10 mg portions (e.g. an order of 50 mg will be delivered as 5 x 10 mg).；运输条件：ambient conditions；Commodity description：natural glycoside；Occurrence：Stevia sp.；

储存温度：4℃；分子式：C14H12O3；分子量：228.25；别名：3,4',5-Stilbenetriol; trans-3,4',5-Trihydroxystilbene；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；；运输条件：ambient conditions；Commodity description：polyphenol；Occurrence：Abies sp. Fallopia sp. Picea sp. Polygonum sp. Trifolium sp. Veratrum sp. Vitis sp.；

储存温度：室温；分子式：C21H24O9；分子量：420.42；别名：Ponticin; Rhaponticoside; Rhapontin; trans-3,3',5-Trihydroxy 4'-methoxystilbene 3-β-D-glucoside；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；；运输条件：ambient conditions；Commodity description：natural glycoside；Occurrence：Rheum sp.；

储存温度：室温；分子式：C17H21NO5 × HBr；分子量：400.26；别名：Hyoscine N-oxide hydrobromide；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；Special Notes：The counterion is determined quantitatively and treated as an impurity in the calculation of the absolute purity. The assigned absolute purity on the certificate of analysis therefore refers to the pure scopolamine N-oxide.；运输条件：ambient conditions；Commodity description：natural alkaloid；Occurrence：Atropa sp. Datura sp.；

储存温度：室温；分子式：C15H8O6；分子量：284.23；别名：Cassic acid; Chrysazin 3-carboxylic acid; Monorhein; Rheic acid; Rhubarb yellow；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；；运输条件：ambient conditions；Commodity description：quinone；Occurrence：Cassia sp. Fallopia sp. Haplopappus sp. Polygonum sp. Rheum sp.；

储存温度：室温；分子式：C33H40O19；分子量：740.67；；Certification：This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities).；；运输条件：ambient conditions；Commodity description：natural glycoside；Occurrence：Astragalus sp. Pueraria sp. Robinia sp. Vigna sp.；