Ethynyl estradiol 57-63-6 CAS NO.57-63-6

NOVESTROL;NEO-ESTRONE;ETHYNYLESTRADIOL;ETHINYL ESTRADIOL;LYNORAL;17ALPHA-ETHYNYL-DELTA1,3,5(10)-ESTRA-TRIENE-3,17BETA-DIOL;17ALPHA-ETHYNYLESTRADIOL;17ALPHA-ETHINYLESTRADIOL

Ethynyl estradiol Chemical Properties

mp  182-183 °C(lit.)

refractive index  -30 ° (C=0.4, Pyridine)
storage temp.  -20°C Freezer
solubility  ethanol: 50 mg/mL, clear, slightly yellow

Merck  3734
CAS DataBase Reference 57-63-6(CAS DataBase Reference)
NIST Chemistry Reference Ethinyl estradiol(57-63-6)
EPA Substance Registry System 19-Norpregna-1,3, 5(10)-trien-20-yne-3,17-diol, (17.alpha.)-(57-63-6)

Safety Information

Hazard Codes  T
Risk Statements  45-22
Safety Statements  53-36/37/39-45
WGK Germany  3

RTECS  RC8925000

F  8
Hazardous Substances Data 57-63-6(Hazardous Substances Data)

Ethynyl estradiol Usage And Synthesis

Chemical Properties Off-White to Light-Yellow Crystalline Powder
Usage A metabolite of 17a-Ethynylestradiol
Usage A synthetic steroid with high oral estrogenic potency
Usage estrogen, plus progestogen as oral contraceptive
General Description Fine white to creamy white powder. A synthetic steroid. Used in combination with progestogen as an oral contraceptive.
Air & Water Reactions Air and light sensitive . Insoluble in water.
Reactivity Profile Ethynyl estradiol may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to generate gaseous hydrogen.
Health Hazard ACUTE/CHRONIC HAZARDS: When heated to decomposition Ethynyl estradiol emits acrid smoke and fumes.
Fire Hazard The flash point data for Ethynyl estradiol are not available. Ethynyl estradiol is probably combustible.