72513-26-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72513-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,5,1 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 72513-26:
(7*7)+(6*2)+(5*5)+(4*1)+(3*3)+(2*2)+(1*6)=109
109 % 10 = 9
So 72513-26-9 is a valid CAS Registry Number.