423173-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 423173-97-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,1,7 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 423173-97:
(8*4)+(7*2)+(6*3)+(5*1)+(4*7)+(3*3)+(2*9)+(1*7)=131
131 % 10 = 1
So 423173-97-1 is a valid CAS Registry Number.