40319-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40319-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,1 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 40319-18:
(7*4)+(6*0)+(5*3)+(4*1)+(3*9)+(2*1)+(1*8)=84
84 % 10 = 4
So 40319-18-4 is a valid CAS Registry Number.