105903-29-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105903-29-5 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 3 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 105903-29:
(8*1)+(7*0)+(6*5)+(5*9)+(4*0)+(3*3)+(2*2)+(1*9)=105
105 % 10 = 5
So 105903-29-5 is a valid CAS Registry Number.