740843-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 740843-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,0,8,4 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 740843-28:
(8*7)+(7*4)+(6*0)+(5*8)+(4*4)+(3*3)+(2*2)+(1*8)=161
161 % 10 = 1
So 740843-28-1 is a valid CAS Registry Number.