105661-76-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105661-76-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,6,6 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 105661-76:
(8*1)+(7*0)+(6*5)+(5*6)+(4*6)+(3*1)+(2*7)+(1*6)=115
115 % 10 = 5
So 105661-76-5 is a valid CAS Registry Number.