649-09-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 649-09-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,4 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 649-09:
(5*6)+(4*4)+(3*9)+(2*0)+(1*9)=82
82 % 10 = 2
So 649-09-2 is a valid CAS Registry Number.