210417-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 210417-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,4,1 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 210417-20:
(8*2)+(7*1)+(6*0)+(5*4)+(4*1)+(3*7)+(2*2)+(1*0)=72
72 % 10 = 2
So 210417-20-2 is a valid CAS Registry Number.