682805-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 682805-21-6 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, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 682805-21:
(8*6)+(7*8)+(6*2)+(5*8)+(4*0)+(3*5)+(2*2)+(1*1)=176
176 % 10 = 6
So 682805-21-6 is a valid CAS Registry Number.