p-Trimethylsilyl-benzolsulfonsaeure, also known as 4-(trimethylsilyl)benzenesulfonic acid, is an organic compound with the chemical formula C9H14O3SSi. It is a derivative of benzenesulfonic acid, where a trimethylsilyl group (Si(CH3)3) is attached to the para position (4th position) of the benzene ring. This modification enhances the stability and reactivity of the molecule, making it a valuable intermediate in organic synthesis. The compound is often used in the preparation of various pharmaceuticals, agrochemicals, and other specialty chemicals due to its unique properties, such as increased lipophilicity and improved solubility in organic solvents. Its applications also extend to the protection of functional groups in organic synthesis and as a reagent in the formation of esters and amides.

1899-78-1

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Basic information
1. Product Name: p-Trimethylsilyl-benzolsulfonsaeure
2. Synonyms:
3. CAS NO:1899-78-1
4. Molecular Formula:
5. Molecular Weight: 230.36
6. EINECS: N/A
7. Product Categories: N/A
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: p-Trimethylsilyl-benzolsulfonsaeure(CAS DataBase Reference)
10. NIST Chemistry Reference: p-Trimethylsilyl-benzolsulfonsaeure(1899-78-1)
11. EPA Substance Registry System: p-Trimethylsilyl-benzolsulfonsaeure(1899-78-1)
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: 1899-78-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1899-78-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,9 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1899-78:
(6*1)+(5*8)+(4*9)+(3*9)+(2*7)+(1*8)=131
131 % 10 = 1
So 1899-78-1 is a valid CAS Registry Number.

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