685844-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685844-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,8,4 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 685844-99:
(8*6)+(7*8)+(6*5)+(5*8)+(4*4)+(3*4)+(2*9)+(1*9)=229
229 % 10 = 9
So 685844-99-9 is a valid CAS Registry Number.