22769-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22769-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,6 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22769-81:
(7*2)+(6*2)+(5*7)+(4*6)+(3*9)+(2*8)+(1*1)=129
129 % 10 = 9
So 22769-81-9 is a valid CAS Registry Number.