205187-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205187-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,8 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205187-71:
(8*2)+(7*0)+(6*5)+(5*1)+(4*8)+(3*7)+(2*7)+(1*1)=119
119 % 10 = 9
So 205187-71-9 is a valid CAS Registry Number.