109589-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109589-40-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,8 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109589-40:
(8*1)+(7*0)+(6*9)+(5*5)+(4*8)+(3*9)+(2*4)+(1*0)=154
154 % 10 = 4
So 109589-40-4 is a valid CAS Registry Number.