105521-56-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105521-56-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,5,2 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 105521-56:
(8*1)+(7*0)+(6*5)+(5*5)+(4*2)+(3*1)+(2*5)+(1*6)=90
90 % 10 = 0
So 105521-56-0 is a valid CAS Registry Number.