681851-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681851-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,5 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 681851-72:
(8*6)+(7*8)+(6*1)+(5*8)+(4*5)+(3*1)+(2*7)+(1*2)=189
189 % 10 = 9
So 681851-72-9 is a valid CAS Registry Number.