205317-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205317-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,3,1 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205317-69:
(8*2)+(7*0)+(6*5)+(5*3)+(4*1)+(3*7)+(2*6)+(1*9)=107
107 % 10 = 7
So 205317-69-7 is a valid CAS Registry Number.