22781-65-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22781-65-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,8 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 22781-65:
(7*2)+(6*2)+(5*7)+(4*8)+(3*1)+(2*6)+(1*5)=113
113 % 10 = 3
So 22781-65-3 is a valid CAS Registry Number.