497091-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 497091-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,0,9 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 497091-61:
(8*4)+(7*9)+(6*7)+(5*0)+(4*9)+(3*1)+(2*6)+(1*1)=189
189 % 10 = 9
So 497091-61-9 is a valid CAS Registry Number.