72291-61-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72291-61-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,2,9 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 72291-61:
(7*7)+(6*2)+(5*2)+(4*9)+(3*1)+(2*6)+(1*1)=123
123 % 10 = 3
So 72291-61-3 is a valid CAS Registry Number.