22961-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22961-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,9,6 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22961-81:
(7*2)+(6*2)+(5*9)+(4*6)+(3*1)+(2*8)+(1*1)=115
115 % 10 = 5
So 22961-81-5 is a valid CAS Registry Number.