2698-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2698-61-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,9 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2698-61:
(6*2)+(5*6)+(4*9)+(3*8)+(2*6)+(1*1)=115
115 % 10 = 5
So 2698-61-5 is a valid CAS Registry Number.