30021-54-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30021-54-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,0,2 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 30021-54:
(7*3)+(6*0)+(5*0)+(4*2)+(3*1)+(2*5)+(1*4)=46
46 % 10 = 6
So 30021-54-6 is a valid CAS Registry Number.