171880-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171880-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,8,8 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 171880-23:
(8*1)+(7*7)+(6*1)+(5*8)+(4*8)+(3*0)+(2*2)+(1*3)=142
142 % 10 = 2
So 171880-23-2 is a valid CAS Registry Number.