205880-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205880-31-5 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, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205880-31:
(8*2)+(7*0)+(6*5)+(5*8)+(4*8)+(3*0)+(2*3)+(1*1)=125
125 % 10 = 5
So 205880-31-5 is a valid CAS Registry Number.