1173523-71-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1173523-71-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,5,2 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1173523-71:
(9*1)+(8*1)+(7*7)+(6*3)+(5*5)+(4*2)+(3*3)+(2*7)+(1*1)=141
141 % 10 = 1
So 1173523-71-1 is a valid CAS Registry Number.