18819-65-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18819-65-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,1 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18819-65:
(7*1)+(6*8)+(5*8)+(4*1)+(3*9)+(2*6)+(1*5)=143
143 % 10 = 3
So 18819-65-3 is a valid CAS Registry Number.