84-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84-34-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 84-34:
(4*8)+(3*4)+(2*3)+(1*4)=54
54 % 10 = 4
So 84-34-4 is a valid CAS Registry Number.