685516-98-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685516-98-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,5,1 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 685516-98:
(8*6)+(7*8)+(6*5)+(5*5)+(4*1)+(3*6)+(2*9)+(1*8)=207
207 % 10 = 7
So 685516-98-7 is a valid CAS Registry Number.