105911-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105911-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,9,1 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 105911-99:
(8*1)+(7*0)+(6*5)+(5*9)+(4*1)+(3*1)+(2*9)+(1*9)=117
117 % 10 = 7
So 105911-99-7 is a valid CAS Registry Number.