77980-84-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77980-84-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,8 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77980-84:
(7*7)+(6*7)+(5*9)+(4*8)+(3*0)+(2*8)+(1*4)=188
188 % 10 = 8
So 77980-84-8 is a valid CAS Registry Number.