21112-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21112-62-9 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, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21112-62:
(7*2)+(6*1)+(5*1)+(4*1)+(3*2)+(2*6)+(1*2)=49
49 % 10 = 9
So 21112-62-9 is a valid CAS Registry Number.