1171158-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171158-20-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,1,1,5 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1171158-20:
(9*1)+(8*1)+(7*7)+(6*1)+(5*1)+(4*5)+(3*8)+(2*2)+(1*0)=125
125 % 10 = 5
So 1171158-20-5 is a valid CAS Registry Number.