1.Long-term in stock 2.Specifiction: 98% 3.Guanteed period: 2 ... ,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid; Rhubarb yellow; Cassic acidMolecular formula: C15H8O6 Molecular weight: ... -322 OC, decompose on 330 OC.Hardly soluble in the water, soluble in the ethanol, benzene, chloroform, aether etc.[Physics ... , increased urine output. Factory supply aloe extract: Rhein acid 98% HPLC