303997-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 303997-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,3,9,9 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 303997-47:
(8*3)+(7*0)+(6*3)+(5*9)+(4*9)+(3*7)+(2*4)+(1*7)=159
159 % 10 = 9
So 303997-47-9 is a valid CAS Registry Number.