685539-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685539-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,5,3 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 685539-87:
(8*6)+(7*8)+(6*5)+(5*5)+(4*3)+(3*9)+(2*8)+(1*7)=221
221 % 10 = 1
So 685539-87-1 is a valid CAS Registry Number.