19231-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19231-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,2,3 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19231-97:
(7*1)+(6*9)+(5*2)+(4*3)+(3*1)+(2*9)+(1*7)=111
111 % 10 = 1
So 19231-97-1 is a valid CAS Registry Number.