7423-14-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7423-14-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,2 and 3 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7423-14:
(6*7)+(5*4)+(4*2)+(3*3)+(2*1)+(1*4)=85
85 % 10 = 5
So 7423-14-5 is a valid CAS Registry Number.