3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol is a complex organic compound with the molecular formula C21H34O2Si. It is a derivative of estradiol, a naturally occurring estrogen hormone, with a trimethylsilyl ether protecting group attached to the hydroxyl group at the 3-position. This modification is often used in organic synthesis to protect the hydroxyl group from unwanted reactions, such as oxidation or dehydration. The compound is characterized by its steroidal structure, featuring three fused rings (A, B, and C) and a hydroxyl group at the 17β position. It is used in various chemical and pharmaceutical applications, including the synthesis of other steroidal compounds and as an intermediate in the preparation of pharmaceuticals. The trimethylsilyl group can be removed under mild conditions when the protection is no longer needed, allowing for further functionalization of the molecule.

3247-84-5

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Basic information
1. Product Name: 3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol
2. Synonyms: 3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol;Estradiol 3-(trimethylsilyl) ether
3. CAS NO:3247-84-5
4. Molecular Formula: C21H32O2Si
5. Molecular Weight: 344.56
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 3247-84-5.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol(CAS DataBase Reference)
10. NIST Chemistry Reference: 3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol(3247-84-5)
11. EPA Substance Registry System: 3-[(Trimethylsilyl)oxy]estra-1,3,5(10)-trien-17β-ol(3247-84-5)
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: 3247-84-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3247-84-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,4 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3247-84:
(6*3)+(5*2)+(4*4)+(3*7)+(2*8)+(1*4)=85
85 % 10 = 5
So 3247-84-5 is a valid CAS Registry Number.

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