142956-14-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142956-14-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,9,5 and 6 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 142956-14:
(8*1)+(7*4)+(6*2)+(5*9)+(4*5)+(3*6)+(2*1)+(1*4)=137
137 % 10 = 7
So 142956-14-7 is a valid CAS Registry Number.
142956-14-7Relevant articles and documents
Efficient preparation of peptidyl pentaflouroethly ketones
Angeloastro, Michael R.,Burkhart, Joseph P.,Bey, Philippe,Peet, Norton P.
, p. 3265 - 3268 (1992)
A concise method for the preparation of α-amino pentafluoroethyl ketone salts from amino acids is described. These intermediates are useful for the preparation of peptidyl pentafluoroethyl ketones.