544452-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 544452-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,4,4,5 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 544452-21:
(8*5)+(7*4)+(6*4)+(5*4)+(4*5)+(3*2)+(2*2)+(1*1)=143
143 % 10 = 3
So 544452-21-3 is a valid CAS Registry Number.