21316-71-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21316-71-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,1 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21316-71:
(7*2)+(6*1)+(5*3)+(4*1)+(3*6)+(2*7)+(1*1)=72
72 % 10 = 2
So 21316-71-2 is a valid CAS Registry Number.