Other Name: Frangula emodin, Rheum emodin, Archin, Frangulic acid
1,3,8-Trihydroxy-6-methylanthraquinone;
6-Methyl-1,3,8-trihydroxyanthraquinone;
emodin from frangula bark;
Herb Source: Rheum palmatum. L.
Molecular Formular ：C15H10O5
Molecular Weight ：270.24
Appearance: Orange needle crystalline
Melting point: 256～257°