685822-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685822-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,8,2 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 685822-91:
(8*6)+(7*8)+(6*5)+(5*8)+(4*2)+(3*2)+(2*9)+(1*1)=207
207 % 10 = 7
So 685822-91-7 is a valid CAS Registry Number.