5100-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5100-12-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,0 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 5100-12:
(6*5)+(5*1)+(4*0)+(3*0)+(2*1)+(1*2)=39
39 % 10 = 9
So 5100-12-9 is a valid CAS Registry Number.