778569-61-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 778569-61-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,8,5,6 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 778569-61:
(8*7)+(7*7)+(6*8)+(5*5)+(4*6)+(3*9)+(2*6)+(1*1)=242
242 % 10 = 2
So 778569-61-2 is a valid CAS Registry Number.