1173023-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1173023-20-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,0,2 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1173023-20:
(9*1)+(8*1)+(7*7)+(6*3)+(5*0)+(4*2)+(3*3)+(2*2)+(1*0)=105
105 % 10 = 5
So 1173023-20-5 is a valid CAS Registry Number.