"5,5,7,7,13,13,15,15-octamethyl-1,3,9,11-tetraphenyl<9.5.1.1^3,9>octasiloxane" is a complex organosilicon compound characterized by its unique structure. It features a cyclic siloxane backbone with eight silicon atoms, numbered 1 through 8, and eight oxygen atoms, forming the repeating Si-O-Si units. The compound is adorned with four phenyl groups attached to silicon atoms 1, 3, 9, and 11, and eight methyl groups attached to silicon atoms 5, 7, 13, and 15. This specific arrangement of substituents gives the compound its distinct properties, making it a significant molecule in the field of organosilicon chemistry, with potential applications in materials science and as a precursor in the synthesis of other silicon-containing compounds.

3511-13-5

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Basic information
1. Product Name: 5,5,7,7,13,13,15,15-octamethyl-1,3,9,11-tetraphenyl<9.5.1.1^3,9>octasiloxane
2. Synonyms:
3. CAS NO:3511-13-5
4. Molecular Formula:
5. Molecular Weight: 813.379
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: 5,5,7,7,13,13,15,15-octamethyl-1,3,9,11-tetraphenyl<9.5.1.1^3,9>octasiloxane(CAS DataBase Reference)
10. NIST Chemistry Reference: 5,5,7,7,13,13,15,15-octamethyl-1,3,9,11-tetraphenyl<9.5.1.1^3,9>octasiloxane(3511-13-5)
11. EPA Substance Registry System: 5,5,7,7,13,13,15,15-octamethyl-1,3,9,11-tetraphenyl<9.5.1.1^3,9>octasiloxane(3511-13-5)
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: 3511-13-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3511-13-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,1 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3511-13:
(6*3)+(5*5)+(4*1)+(3*1)+(2*1)+(1*3)=55
55 % 10 = 5
So 3511-13-5 is a valid CAS Registry Number.

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