197159-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197159-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,1,5 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 197159-25:
(8*1)+(7*9)+(6*7)+(5*1)+(4*5)+(3*9)+(2*2)+(1*5)=174
174 % 10 = 4
So 197159-25-4 is a valid CAS Registry Number.