3101-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3101-53-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,0 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3101-53:
(6*3)+(5*1)+(4*0)+(3*1)+(2*5)+(1*3)=39
39 % 10 = 9
So 3101-53-9 is a valid CAS Registry Number.