173423-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173423-97-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,4,2 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 173423-97:
(8*1)+(7*7)+(6*3)+(5*4)+(4*2)+(3*3)+(2*9)+(1*7)=137
137 % 10 = 7
So 173423-97-7 is a valid CAS Registry Number.