7442-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7442-43-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 2 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7442-43:
(6*7)+(5*4)+(4*4)+(3*2)+(2*4)+(1*3)=95
95 % 10 = 5
So 7442-43-5 is a valid CAS Registry Number.