1240409-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1240409-71-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,4,0 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1240409-71:
(9*1)+(8*2)+(7*4)+(6*0)+(5*4)+(4*0)+(3*9)+(2*7)+(1*1)=115
115 % 10 = 5
So 1240409-71-5 is a valid CAS Registry Number.