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131699-18-8

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131699-18-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131699-18-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,9 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131699-18:
(8*1)+(7*3)+(6*1)+(5*6)+(4*9)+(3*9)+(2*1)+(1*8)=138
138 % 10 = 8
So 131699-18-8 is a valid CAS Registry Number.

131699-18-8Relevant articles and documents

An investigation into the one-pot Heck olefination-hydrogenation reaction

Geoghegan, Kimberly,Kelleher, Susan,Evans, Paul

, p. 2187 - 2194 (2011)

Herein is described an operationally simple process concerning the observation that, following either inter-, or intramolecular Heck olefination, stirring of the so formed substituted alkenyl product under an atmosphere of hydrogen efficiently effects alkene hydrogenation. Overall this two-operation, one-pot "reductive Heck" sequence is notable since direct reductive Heck processes, using additives such as formate salts, are restricted to a limited range of substrates. In total 25 examples are reported (yields ranging from 0 to 95%), which were selected in order to probe the scope and limitations of this method. Finally, the utility of this sequence was demonstrated in a short synthesis of the calcimimetic agent, cinacalcet.

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