819813-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 819813-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,9,8,1 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 819813-97:
(8*8)+(7*1)+(6*9)+(5*8)+(4*1)+(3*3)+(2*9)+(1*7)=203
203 % 10 = 3
So 819813-97-3 is a valid CAS Registry Number.