7438-47-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7438-47-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,3 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7438-47:
(6*7)+(5*4)+(4*3)+(3*8)+(2*4)+(1*7)=113
113 % 10 = 3
So 7438-47-3 is a valid CAS Registry Number.