197010-20-1 Usage
Chemical Properties
Pale Beige Solid
Uses
Hydroxy Donepezil is an impurity of Donepezil (D531750).
Check Digit Verification of cas no
The CAS Registry Mumber 197010-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,0,1 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 197010-20:
(8*1)+(7*9)+(6*7)+(5*0)+(4*1)+(3*0)+(2*2)+(1*0)=121
121 % 10 = 1
So 197010-20-1 is a valid CAS Registry Number.
197010-20-1Relevant articles and documents
PROCESS FOR THE PREPARATION OF DONEPEZIL AND INTERMEDIATE COMPOUNDS THEREOF AS WELL AS HYDRATES OF DONEPEZIL
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Page/Page column 17, (2008/06/13)
The present invention relates to a new process for the preparation of intermediate compounds useful in the manufacture of donepezil, or a pharmaceutically-acceptable salt thereof, and also relates to processes for preparing donepezil and to the novel intermediates per se. In addition the invention relates to various hydrated forms of donepezil.
