2105-80-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2105-80-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,0 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2105-80:
(6*2)+(5*1)+(4*0)+(3*5)+(2*8)+(1*0)=48
48 % 10 = 8
So 2105-80-8 is a valid CAS Registry Number.