21398-14-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21398-14-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,9 and 8 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21398-14:
(7*2)+(6*1)+(5*3)+(4*9)+(3*8)+(2*1)+(1*4)=101
101 % 10 = 1
So 21398-14-1 is a valid CAS Registry Number.