Product Name

  • Name

    Quinestrol

  • EINECS 205-803-1
  • CAS No. 152-43-2
  • Article Data6
  • CAS DataBase
  • Density 1.15 g/cm3
  • Solubility
  • Melting Point 107 - 108oC
  • Formula C25H32O2
  • Boiling Point 502.5 °C at 760 mmHg
  • Molecular Weight 364.528
  • Flash Point 218.8 °C
  • Transport Information
  • Appearance crystals
  • Safety 53-22-36/37/39-45
  • Risk Codes 45-61-20/21/22-46
  • Molecular Structure Molecular Structure of 152-43-2 (Quinestrol)
  • Hazard Symbols
  • Synonyms 19-Nor-17a-pregna-1,3,5(10)-trien-20-yn-17-ol,3-(cyclopentyloxy)- (6CI,7CI,8CI);17-Ethynylestradiol cyclopentyl ether;17a-Ethynylestradiol 3-cyclopentylether;3-(Cyclopentyloxy)-19-nor-17a-pregna-1,3,5(10)-trien-20-yn-17-ol;3-Cyclopentyloxy-17a-ethynyl-1,3,5(10)-estratrien-17-ol;3-Cyclopentyloxy-17a-ethynylestra-1,3,5(10)-trien-17b-ol;EECPE;Eston;Estrovis;Estrovis 4000;Estrovister;Ethynylestradiol-3-cyclopentyl ether;Plestrovis;Qui-Lea;W 3566;
  • PSA 29.46000
  • LogP 5.22840

QUINESTROL Chemical Properties

Quinestrol is also called ethinyl estradiol 3-cyclopentyl ether;3-cyclopentyloxy-17-alpha-ethynyloestra-1,3,5(10)-trien-17-beta-ol, is synthetic estrogen.


Molecular Formula: C25H32O2
Molecular Weight: 364.52
EINECS: 205-803-1
Solubility in water:Insoluble
Melting Point:107 - 108°C
Vapor Pressure:6E-11 (25 °C)
pKa/pKb:13.10 (pKa)
Partition Coefficient:5.4
Heat Of Vaporization:81.3 kJ/mol

QUINESTROL Uses

Quinestrol is commonly used in hormone replacement therapy, and occasionally to treat breast cancer and prostate cancer.It is also used to treat symptoms of menopause, such as hot flashes.

QUINESTROL Toxicity Data With Reference

RTECS:  RC8948000

QUINESTROL Safety Profile

Human female reproductive effects by ingestion of extremely small amounts: postpartum disorders and changes in fertility. Experimental reproductive effects. A steroid. When heated to decomposition it emits acrid smoke and irritating fumes.

Hazard Codes:  T
Risk Statements:  45-61-20/21/22-46
Safety Statements:  53-22-36/37/39-45
WGK Germany:  3

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