417709-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 417709-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,7,7,0 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 417709-69:
(8*4)+(7*1)+(6*7)+(5*7)+(4*0)+(3*9)+(2*6)+(1*9)=164
164 % 10 = 4
So 417709-69-4 is a valid CAS Registry Number.