Helvolic Acid Cas number: 29400-42-8
Other names: Helvolic acid (6CI, 7CI); (Z)-6b,16b-Dihydroxy-3,7-dioxo-29-nor-8a,9b,13a,14b-dammara-1,17(20),24-trien-21-oic acid diacetate; Fumigacin.
Molecular formulae: C33H44O8
Molecular weight: 568.698
storage temp: 2-8°C
Properties: Needles from methanol, mp 215°. [a]D25 -121° (chloroform). uv max (ethanol): 231 nm (log e 4.24)；slightly sol in water; slightly sol in petr ether, methanol, ethanol. More sol in hot methanol, ethanol; sol in chloroform, acetone, ethyl acetate, benzene, pyridine, glacial acetic acid, dioxane, ether.
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