144264-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144264-74-4 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, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 144264-74:
(8*1)+(7*4)+(6*4)+(5*2)+(4*6)+(3*4)+(2*7)+(1*4)=124
124 % 10 = 4
So 144264-74-4 is a valid CAS Registry Number.
144264-74-4Relevant articles and documents
Synthesis of N-demethyl-N-substituted-14-hydroxycodeine and morphine derivatives
Hosztafi,Simon,Makleit
, p. 2527 - 2541 (1992)
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
