Estra-4,9-diene-3,17-dione
Estra-4,9-diene-3,17-dione 雌甾-4,9-二烯-3,17-二酮

Other names : 19-Norandrosta-4,9-diene-3,17-dione

Cas No: 5173-46-6

Molecular formula: C19H20O2

Molecular weight: 280.36

Appearance:white or almost white powder

Specification : Enterprise standard