20101-51-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20101-51-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,0 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20101-51:
(7*2)+(6*0)+(5*1)+(4*0)+(3*1)+(2*5)+(1*1)=33
33 % 10 = 3
So 20101-51-3 is a valid CAS Registry Number.