722549-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 722549-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,2,5,4 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 722549-91:
(8*7)+(7*2)+(6*2)+(5*5)+(4*4)+(3*9)+(2*9)+(1*1)=169
169 % 10 = 9
So 722549-91-9 is a valid CAS Registry Number.