7442-28-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7442-28-6 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, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7442-28:
(6*7)+(5*4)+(4*4)+(3*2)+(2*2)+(1*8)=96
96 % 10 = 6
So 7442-28-6 is a valid CAS Registry Number.