208517-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208517-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,5,1 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 208517-34:
(8*2)+(7*0)+(6*8)+(5*5)+(4*1)+(3*7)+(2*3)+(1*4)=124
124 % 10 = 4
So 208517-34-4 is a valid CAS Registry Number.