105906-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105906-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,9,0 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 105906-40:
(8*1)+(7*0)+(6*5)+(5*9)+(4*0)+(3*6)+(2*4)+(1*0)=109
109 % 10 = 9
So 105906-40-9 is a valid CAS Registry Number.