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YK11

1) Product Name:    YK11

2)  Brand Name :   YK11

3) Appearance: white powder  

4) CAS No: 1370003-76-1

5) Introduction: YK11 is short for (17-alpha,20E) 17,20-[(1-methoxyethylidene)bis(oxy)] 3-oxo-19-norpregna-4,20-diene 21-carboxylic acid methyl ester.

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