682811-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 682811-40-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,2,8,1 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 682811-40:
(8*6)+(7*8)+(6*2)+(5*8)+(4*1)+(3*1)+(2*4)+(1*0)=171
171 % 10 = 1
So 682811-40-1 is a valid CAS Registry Number.