197171-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197171-78-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,1,7 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 197171-78:
(8*1)+(7*9)+(6*7)+(5*1)+(4*7)+(3*1)+(2*7)+(1*8)=171
171 % 10 = 1
So 197171-78-1 is a valid CAS Registry Number.