72721-61-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72721-61-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,2 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 72721-61:
(7*7)+(6*2)+(5*7)+(4*2)+(3*1)+(2*6)+(1*1)=120
120 % 10 = 0
So 72721-61-0 is a valid CAS Registry Number.