9009-51-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 9009-51-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 9009-51:
(6*9)+(5*0)+(4*0)+(3*9)+(2*5)+(1*1)=92
92 % 10 = 2
So 9009-51-2 is a valid CAS Registry Number.