98720-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98720-39-9 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 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 98720-39:
(7*9)+(6*8)+(5*7)+(4*2)+(3*0)+(2*3)+(1*9)=169
169 % 10 = 9
So 98720-39-9 is a valid CAS Registry Number.