6839-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6839-22-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,3 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 6839-22:
(6*6)+(5*8)+(4*3)+(3*9)+(2*2)+(1*2)=121
121 % 10 = 1
So 6839-22-1 is a valid CAS Registry Number.