20152-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20152-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,5 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20152-09:
(7*2)+(6*0)+(5*1)+(4*5)+(3*2)+(2*0)+(1*9)=54
54 % 10 = 4
So 20152-09-4 is a valid CAS Registry Number.