263349-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263349-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,3,4 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 263349-18:
(8*2)+(7*6)+(6*3)+(5*3)+(4*4)+(3*9)+(2*1)+(1*8)=144
144 % 10 = 4
So 263349-18-4 is a valid CAS Registry Number.