923571-15-7 Usage
Uses
2,3-Dihydro-5,6-dimethoxy-2-(4-pyridinylcarbonyl)-1H-inden-1-one is an impurity in the synthesis of Donezepil (D531750), A nootropic. An inhibitor of acetylcholinesterase.
Check Digit Verification of cas no
The CAS Registry Mumber 923571-15-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,3,5,7 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 923571-15:
(8*9)+(7*2)+(6*3)+(5*5)+(4*7)+(3*1)+(2*1)+(1*5)=167
167 % 10 = 7
So 923571-15-7 is a valid CAS Registry Number.
923571-15-7Relevant 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 13-14, (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.
