77828-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77828-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,2 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77828-22:
(7*7)+(6*7)+(5*8)+(4*2)+(3*8)+(2*2)+(1*2)=169
169 % 10 = 9
So 77828-22-9 is a valid CAS Registry Number.