32968-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 32968-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,9,6 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 32968-91:
(7*3)+(6*2)+(5*9)+(4*6)+(3*8)+(2*9)+(1*1)=145
145 % 10 = 5
So 32968-91-5 is a valid CAS Registry Number.
32968-91-5Relevant 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