18-Norestrone, also known as 18-nor-17α-ethynyltestosterone or norethynodrel, is a synthetic progestin with progestogenic and androgenic properties. It is a derivative of testosterone, where the 18-methyl group is removed, and an ethynyl group is added at the 17α position. This modification enhances its progestational activity and reduces its androgenic effects. 18-Norestrone is used in various hormonal medications, such as oral contraceptives and hormone replacement therapies, to regulate menstrual cycles, prevent pregnancy, and alleviate symptoms of menopause. It works by inhibiting ovulation, thickening cervical mucus, and altering the endometrium, making it less receptive to implantation.

4732-79-0

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Basic information
1. Product Name: 18-Norestrone
2. Synonyms:
3. CAS NO:4732-79-0
4. Molecular Formula:
5. Molecular Weight:
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 4732-79-0.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 18-Norestrone(CAS DataBase Reference)
10. NIST Chemistry Reference: 18-Norestrone(4732-79-0)
11. EPA Substance Registry System: 18-Norestrone(4732-79-0)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 4732-79-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4732-79-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,3 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4732-79:
(6*4)+(5*7)+(4*3)+(3*2)+(2*7)+(1*9)=100
100 % 10 = 0
So 4732-79-0 is a valid CAS Registry Number.

4732-79-0Upstream product

4732-79-0Downstream Products

4147-10-8 3-methoxy-gona-1,3,5(10)-trien-17-one

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