13-Ethyl-17-hydroxy-18,19-dinorpregn-5(10)-en-20-yn-3-one , 0.95 , 【19914-67-1】
Molecular Formula: C21H28O2
Formula Weight: 312.45
3-(Bromomethyl)-2-(difluoromethyl)pyridine-4-carboxaldehyde , NLT 97% , 【1804443-03-5】
Molecular Formula: C8H6BrF2NO
Formula Weight: 250.04
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