54721-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54721-62-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,7,2 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54721-62:
(7*5)+(6*4)+(5*7)+(4*2)+(3*1)+(2*6)+(1*2)=119
119 % 10 = 9
So 54721-62-9 is a valid CAS Registry Number.