111171-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111171-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,1,7 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 111171-90:
(8*1)+(7*1)+(6*1)+(5*1)+(4*7)+(3*1)+(2*9)+(1*0)=75
75 % 10 = 5
So 111171-90-5 is a valid CAS Registry Number.