21092-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21092-83-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,9 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21092-83:
(7*2)+(6*1)+(5*0)+(4*9)+(3*2)+(2*8)+(1*3)=81
81 % 10 = 1
So 21092-83-1 is a valid CAS Registry Number.