77490-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77490-97-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,9 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77490-97:
(7*7)+(6*7)+(5*4)+(4*9)+(3*0)+(2*9)+(1*7)=172
172 % 10 = 2
So 77490-97-2 is a valid CAS Registry Number.