144264-80-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144264-80-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,2,6 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 144264-80:
(8*1)+(7*4)+(6*4)+(5*2)+(4*6)+(3*4)+(2*8)+(1*0)=122
122 % 10 = 2
So 144264-80-2 is a valid CAS Registry Number.
144264-80-2Relevant articles and documents
Synthesis of N-demethyl-N-substituted-14-hydroxycodeine and morphine derivatives
Hosztafi,Simon,Makleit
, p. 2527 - 2541 (2007/10/02)
A few representatives (1b-d) of a novel group of structurally related morphine-antagonist compounds have been prepared in stereochemically homogeneous form. The employed procedures involve O-demethylation either of the corresponding codeine derivatives 2b