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87549-81-3

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87549-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87549-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,4 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87549-81:
(7*8)+(6*7)+(5*5)+(4*4)+(3*9)+(2*8)+(1*1)=183
183 % 10 = 3
So 87549-81-3 is a valid CAS Registry Number.

87549-81-3Relevant articles and documents

Transfer off hydrogen from carbon-hydrogen bonds. Synthesis, structure, and reactions of tris[(triphenylstannyl)methyl]methane

Ducharme, Yves,Latour, Stephan,Wuest, James D.

, p. 208 - 211 (2008/10/08)

Compounds in which a carbon-hydrogen bond is adjacent to several carbon-metal bonds promise to be particularly good donors of hydrogen. The synthesis, structure, and redox reactions of one member of this group of compounds, tris[(triphenylstannyl)methyl]methane (2), are reported. Triphenylcarbenium is reduced to triphenylmethane less rapidly by stannane 2 than by bis[(triphenylstannyl)methyl]methane (11). The unexpectedly low reactivity of stannane 2 is due to the adoption of a C3 conformation in which the central carbon-hydrogen bond is sterically shielded and gauche to the adjacent carbon-tin bonds.

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