497855-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 497855-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,8,5 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 497855-89:
(8*4)+(7*9)+(6*7)+(5*8)+(4*5)+(3*5)+(2*8)+(1*9)=237
237 % 10 = 7
So 497855-89-7 is a valid CAS Registry Number.