658698-99-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 658698-99-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,8,6,9 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 658698-99:
(8*6)+(7*5)+(6*8)+(5*6)+(4*9)+(3*8)+(2*9)+(1*9)=248
248 % 10 = 8
So 658698-99-8 is a valid CAS Registry Number.