72291-59-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72291-59-9 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, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72291-59:
(7*7)+(6*2)+(5*2)+(4*9)+(3*1)+(2*5)+(1*9)=129
129 % 10 = 9
So 72291-59-9 is a valid CAS Registry Number.