256224-19-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256224-19-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,2,2 and 4 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 256224-19:
(8*2)+(7*5)+(6*6)+(5*2)+(4*2)+(3*4)+(2*1)+(1*9)=128
128 % 10 = 8
So 256224-19-8 is a valid CAS Registry Number.
256224-19-8Relevant articles and documents
Rotaxanes via Michael addition
Reuter, Carin,Voegtle, Fritz
, p. 593 - 595 (2007/10/03)
(equation presented) The application of a template effect to the classical Michael addition of heteronucleophiles to various Michael acceptor systems leads in good yields to a new trapping synthesis of [2]rotaxanes with conjugated functional groups in the
