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108034-67-9

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108034-67-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108034-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,0,3 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 108034-67:
(8*1)+(7*0)+(6*8)+(5*0)+(4*3)+(3*4)+(2*6)+(1*7)=99
99 % 10 = 9
So 108034-67-9 is a valid CAS Registry Number.

108034-67-9Relevant articles and documents

Novel Preparation of N-Protected Amino Acid Active Esters Using 1,2,2,2-Tetrachloroethyl Carbonates

Jaoudai, Mahmoud,Martinez, Jean,Castro, Bertrand

, p. 2364 - 2367 (2007/10/02)

1,2,2,2-Tetrachloroethyl chloroformate reacts with substituted phenols or N-hydroxy imides to yield crystalline and stable mixed aryl or oximido tetrachloroethyl carbonates.When allowed to react with an N-protected amino acid derivative, these compounds proved to be efficient for the syntheses of the corresponding active esters.A series of active esters including p-nitrophenol, trichlorophenol, pentafluorophenol, and N-hydroxysuccinimide derivatives were prepared by this new procedure.

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