105517-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105517-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,5,1 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 105517-98:
(8*1)+(7*0)+(6*5)+(5*5)+(4*1)+(3*7)+(2*9)+(1*8)=114
114 % 10 = 4
So 105517-98-4 is a valid CAS Registry Number.