21112-71-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21112-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,1 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21112-71:
(7*2)+(6*1)+(5*1)+(4*1)+(3*2)+(2*7)+(1*1)=50
50 % 10 = 0
So 21112-71-0 is a valid CAS Registry Number.