21454-43-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21454-43-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,5 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21454-43:
(7*2)+(6*1)+(5*4)+(4*5)+(3*4)+(2*4)+(1*3)=83
83 % 10 = 3
So 21454-43-3 is a valid CAS Registry Number.