12021-84-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12021-84-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,2 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 12021-84:
(7*1)+(6*2)+(5*0)+(4*2)+(3*1)+(2*8)+(1*4)=50
50 % 10 = 0
So 12021-84-0 is a valid CAS Registry Number.