7337-97-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7337-97-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,3 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7337-97:
(6*7)+(5*3)+(4*3)+(3*7)+(2*9)+(1*7)=115
115 % 10 = 5
So 7337-97-5 is a valid CAS Registry Number.