142259-53-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142259-53-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,2,5 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142259-53:
(8*1)+(7*4)+(6*2)+(5*2)+(4*5)+(3*9)+(2*5)+(1*3)=118
118 % 10 = 8
So 142259-53-8 is a valid CAS Registry Number.
142259-53-8Relevant articles and documents
Synthesis of 2-Heteroaryl-Substituted 3,3,3-Trifluoroalanine and 3,3,3-Trifluorolactic Acid Derivatives
Sewald, Norbert,Burger, Klaus
, p. 947 - 952 (2007/10/02)
Trifluoromethyl-substituted alkynyl α-amino acid as well as alkynyl α-hydroxy acid esters and 1,3-dipoles (nitrile oxides, diazoalkanes, phenyl azide) react regioselectively to give α-trifluoromethyl-substituted heterocyclic α-amino and α-hydroxy acid der
