74284-16-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74284-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,8 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74284-16:
(7*7)+(6*4)+(5*2)+(4*8)+(3*4)+(2*1)+(1*6)=135
135 % 10 = 5
So 74284-16-5 is a valid CAS Registry Number.