The Estr-4-en-17-one(7CI,8CI,9CI), with the CAS registry number 3646-28-4 and EINECS registry number 222-878-6, has the systematic name of estr-4-en-17-one. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₁₈H₂₆O.

The characteristics of Estr-4-en-17-one(7CI,8CI,9CI) are as followings: (1)ACD/LogP: 4.86; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.86; (4)ACD/LogD (pH 7.4): 4.86; (5)ACD/BCF (pH 5.5): 2921.08; (6)ACD/BCF (pH 7.4): 2921.08; (7)ACD/KOC (pH 5.5): 10525.23; (8)ACD/KOC (pH 7.4): 10525.23; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 17.07 Å²; (13)Index of Refraction: 1.546; (14)Molar Refractivity: 76.93 cm³; (15)Molar Volume: 242.8 cm³; (16)Polarizability: 30.5×10^-24cm³; (17)Surface Tension: 39.8 dyne/cm; (18)Density: 1.06 g/cm³; (19)Flash Point: 164.3 °C; (20)Enthalpy of Vaporization: 63.02 kJ/mol; (21)Boiling Point: 381.9 °C at 760 mmHg; (22)Vapour Pressure: 4.91E-06 mmHg at 25°C. 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C4[C@]3(CC[C@@H]2[C@@H]1C(=C/CCC1)\CC[C@H]2[C@@H]3CC4)C
(2)InChI: InChI=1/C18H26O/c1-18-11-10-14-13-5-3-2-4-12(13)6-7-15(14)16(18)8-9-17(18)19/h4,13-16H,2-3,5-11H2,1H3/t13-,14+,15+,16-,18-/m0/s1
(3)InChIKey: OLYAEHZZXXLNQQ-QXUSFIETBF