105688-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105688-89-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,6,8 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 105688-89:
(8*1)+(7*0)+(6*5)+(5*6)+(4*8)+(3*8)+(2*8)+(1*9)=149
149 % 10 = 9
So 105688-89-9 is a valid CAS Registry Number.