263405-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263405-66-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,4,0 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 263405-66:
(8*2)+(7*6)+(6*3)+(5*4)+(4*0)+(3*5)+(2*6)+(1*6)=129
129 % 10 = 9
So 263405-66-9 is a valid CAS Registry Number.