721453-55-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721453-55-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,4,5 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 721453-55:
(8*7)+(7*2)+(6*1)+(5*4)+(4*5)+(3*3)+(2*5)+(1*5)=140
140 % 10 = 0
So 721453-55-0 is a valid CAS Registry Number.