Product Name: YK-11
Full Name: (17a,20E)-17,20-[(1-Methoxy ethylidene)bis(oxy)]-3-oxo-19-norpre gna- 4,20-diene-21-carbo xylic Acid Methyl Ester
CAS: 431579-34-9/1370003-76-1
Assay: 99.5%
Shelf life: 2 years
Appearance: white powder
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