681838-08-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681838-08-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,3 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 681838-08:
(8*6)+(7*8)+(6*1)+(5*8)+(4*3)+(3*8)+(2*0)+(1*8)=194
194 % 10 = 4
So 681838-08-4 is a valid CAS Registry Number.