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83991-20-2

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83991-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83991-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,9 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 83991-20:
(7*8)+(6*3)+(5*9)+(4*9)+(3*1)+(2*2)+(1*0)=162
162 % 10 = 2
So 83991-20-2 is a valid CAS Registry Number.

83991-20-2Relevant articles and documents

4-aminopyrimidine derivatives

-

, (2008/06/13)

This invention is 4-aminopyrimidine derivatives of the formula wherein R1, R2, R3 and R4 are as defined in the specification or a pharmaceutically acceptable salt thereof. The invention also is the preparation of compounds of formula I, pharmaceutical compositions containing therapeutically effective amounts of compounds of formula I or pharmaceutically acceptable salts thereof and to a method of treatment comprising administering therapeutically effective amounts of the compound of formula I for the prevention or treatment of mGluR5 receptor mediated disorders.

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