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81256-03-3

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81256-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81256-03-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,5 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81256-03:
(7*8)+(6*1)+(5*2)+(4*5)+(3*6)+(2*0)+(1*3)=113
113 % 10 = 3
So 81256-03-3 is a valid CAS Registry Number.

81256-03-3Relevant articles and documents

1-LITHIO-1-BENZENESULFINYL-2-TRIMETHYLSILYLETHANE AS A 2-TRIMETHYLSILYLVINYL ANION EQUIVALENT IN REACTIONS WITH ALHEDYDES, KETONES AND EPOXIDES

Hsiao, C-N.,Shechter, H.

, p. 2371 - 2374 (2007/10/02)

Aldehydes, ketones and epoxides give adducts with 1-lithio-1-benzenesulfinyl-2-trimethylsilylethane which upon neutralization eliminate benezenesulfenic acid efficiently at 76 deg C to yield trans-3-(trimethylsilyl)allyl alcohols and trans-4-(trimethylsilyl)-3-alken-1-ols.

Silicon-Directed Nazarov Cyclization

Denmark, S. E.,Jones, T. K.

, p. 2642 - 2645 (2007/10/02)

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