98721-76-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98721-76-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,7,2 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 98721-76:
(7*9)+(6*8)+(5*7)+(4*2)+(3*1)+(2*7)+(1*6)=177
177 % 10 = 7
So 98721-76-7 is a valid CAS Registry Number.