91562-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91562-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,6 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91562-71:
(7*9)+(6*1)+(5*5)+(4*6)+(3*2)+(2*7)+(1*1)=139
139 % 10 = 9
So 91562-71-9 is a valid CAS Registry Number.