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777949-66-3

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777949-66-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 777949-66-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,7,9,4 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 777949-66:
(8*7)+(7*7)+(6*7)+(5*9)+(4*4)+(3*9)+(2*6)+(1*6)=253
253 % 10 = 3
So 777949-66-3 is a valid CAS Registry Number.

777949-66-3Relevant articles and documents

Synthesis of substituted Se-phenyl selenocarboxylates from terminal alkynes

Tiecco, Marcello,Testaferri, Lorenzo,Temperini, Andrea,Bagnoli, Luana,Marini, Francesca,Santi, Claudio,Terlizzi, Raffaella

, p. 3447 - 3458 (2007/10/03)

Se-Phenyl selenocarboxylates have been conveniently prepared from (phenylseleno)acetylenes by treatment with p-toluenesulfonic acid monohydrate in dichloromethane. This easy conversion is compatible with a broad range of oxygen- and nitrogen-containing functional groups. The Se-phenyl selenocarboxylates were easily converted into the corresponding esters and amides. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.

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