347-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 347-99-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,4 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 347-99:
(5*3)+(4*4)+(3*7)+(2*9)+(1*9)=79
79 % 10 = 9
So 347-99-9 is a valid CAS Registry Number.