682805-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 682805-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,2,8,0 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 682805-18:
(8*6)+(7*8)+(6*2)+(5*8)+(4*0)+(3*5)+(2*1)+(1*8)=181
181 % 10 = 1
So 682805-18-1 is a valid CAS Registry Number.