1512-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1512-20-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,1 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1512-20:
(6*1)+(5*5)+(4*1)+(3*2)+(2*2)+(1*0)=45
45 % 10 = 5
So 1512-20-5 is a valid CAS Registry Number.