164161-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164161-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,1,6 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 164161-21:
(8*1)+(7*6)+(6*4)+(5*1)+(4*6)+(3*1)+(2*2)+(1*1)=111
111 % 10 = 1
So 164161-21-1 is a valid CAS Registry Number.
164161-21-1Relevant articles and documents
NEW PHARMACEUTICAL COMPOUNDS
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Page/Page column 29, (2008/06/13)
Compounds of formula (I), wherein R1-R4, X, Y and Z are as defined in claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors.