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947257-45-6

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947257-45-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 947257-45-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,7,2,5 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 947257-45:
(8*9)+(7*4)+(6*7)+(5*2)+(4*5)+(3*7)+(2*4)+(1*5)=206
206 % 10 = 6
So 947257-45-6 is a valid CAS Registry Number.

947257-45-6Relevant articles and documents

α,ω-Bis(trialkynyltin) compounds with a linear or cross-shaped spacer

Elhamzaoui, Hicham,Jousseaume, Bernard,Toupance, Thierry,Allouchi, Hassan

, p. 3908 - 3917 (2007)

The preparation of arylene-, alkylene-, or dimethylenediphenyl-bridged bis(trichlorotin) compounds with two or three phenyl rings from the reaction of the corresponding hexacyclohexyl derivatives with tin tetrachloride is described. Hexachlorides with mixed aryl - alkyl bridges were prepared in the same way. When arylene-bridged ditins were substituted on aryl rings with alkoxy groups, it was necessary to use hexamethyl derivatives instead of the cyclohexyl compounds to obtain the corresponding hexachlorides. In these compounds, weak inter- and/or intramolecular interactions were detected by X-ray analysis. The ditin hexachlorides were transformed into the corresponding hexaalkynyl derivatives, precursors for hybrid materials.

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