1043909-04-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1043909-04-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,3,9,0 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1043909-04:
(9*1)+(8*0)+(7*4)+(6*3)+(5*9)+(4*0)+(3*9)+(2*0)+(1*4)=131
131 % 10 = 1
So 1043909-04-1 is a valid CAS Registry Number.