261761-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261761-11-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,7,6 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 261761-11:
(8*2)+(7*6)+(6*1)+(5*7)+(4*6)+(3*1)+(2*1)+(1*1)=129
129 % 10 = 9
So 261761-11-9 is a valid CAS Registry Number.