205880-42-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205880-42-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,8,8 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 205880-42:
(8*2)+(7*0)+(6*5)+(5*8)+(4*8)+(3*0)+(2*4)+(1*2)=128
128 % 10 = 8
So 205880-42-8 is a valid CAS Registry Number.