205129-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205129-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,2 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205129-89:
(8*2)+(7*0)+(6*5)+(5*1)+(4*2)+(3*9)+(2*8)+(1*9)=111
111 % 10 = 1
So 205129-89-1 is a valid CAS Registry Number.