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7489-70-5

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7489-70-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7489-70-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,8 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7489-70:
(6*7)+(5*4)+(4*8)+(3*9)+(2*7)+(1*0)=135
135 % 10 = 5
So 7489-70-5 is a valid CAS Registry Number.

7489-70-5Downstream Products

7489-70-5Relevant articles and documents

Hyperconjugative stabilization of silicenium ions: Kinetics of hydride abstractions from β-element substituted silanes

Basso, Nils,G?rs, Solvig,Popowski, Eckhard,Mayr, Herbert

, p. 6025 - 6028 (1993)

Rates of hydride abstractions from β-silyl-, β-germyl-, and β-stannyl-substituted silanes [HSiMe2(CH2-MMe3), M = Si, Ge, Sn] and related compounds by diarylcarbenium ions have been measured. The intermediate silicenium ions, produced in the rate-determining step, are stabilized by hyperconjugation, but the effects are much smaller than in comparable carbenium ions.

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