Molecular Structure of 17alpha-Ethynylestr-5(10)-ene-3alpha,17beta-diol (CAS NO. 21466-08-0):

IUPAC Name: (3R,8R,9S,13S,14S,17R)-17-Ethynyl-13-methyl-2,3,4,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol  
Molecular Formula: C₂₀H₂₈O₂
Molecular Weight: 300.43512 g/mol
XLogP3-AA 2.5
H-Bond Donor 2
H-Bond Acceptor 2 
Canonical SMILES: CC12CCC3C(C1CCC2(C#C)O)CCC4=C3CCC(C4)O
Isomeric SMILES: C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=C3CC[C@H](C4)O
InChI: InChI=1S/C20H28O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,14,16-18,21-22H,4-12H2,2H3/t14-,16-,17-,18+,19+,20+/m1/s1
InChIKey: XSQAQKNJHGGMRV-KXMHTTHWSA-N
Index of Refraction: 1.586
Molar Refractivity: 86.74 cm³
Molar Volume: 258.4 cm³
Surface Tension: 51.2 dyne/cm
Density: 1.16 g/cm³
Flash Point: 201.4 °C
Enthalpy of Vaporization: 80.87 kJ/mol
Boiling Point: 443.1 °C at 760 mmHg
Vapour Pressure: 1.03E-09 mmHg at 25 °C
Water Solubility of 17alpha-Ethynylestr-5(10)-ene-3alpha,17beta-diol (CAS NO. 21466-08-0): 2.003 mg/L at 25 °C

An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits acrid smoke and irritating fumes.

  17alpha-Ethynylestr-5(10)-ene-3alpha,17beta-diol with cas registry number of 21466-08-0 is called for 17-alpha-Ethynyl-estr-5(10)-ene-3-alpha,17-beta-diol ; 19-Nor-17alpha-pregn-5(10)-en-20-yne-3alpha-17beta-diol ; 19-Norpregn-5(10)-en-20-yne-3,17-diol, (3-alpha,17-alpha)- ; 19-Nor-17-alpha-pregn-5(10)-en-20-yne-3-alpha,17-diol ; 19-Nor-17alpha-pregn-5(10)-en-20-yne-3alpha,17-diol (8CI) ; 3-alpha-Hydroxynorethynodrel ; 3alpha-Hydroxynorethynodrel ; NSC 77061 .