21300-75-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21300-75-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,0 and 0 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21300-75:
(7*2)+(6*1)+(5*3)+(4*0)+(3*0)+(2*7)+(1*5)=54
54 % 10 = 4
So 21300-75-4 is a valid CAS Registry Number.