67-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67-83-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 6 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 67-83:
(4*6)+(3*7)+(2*8)+(1*3)=64
64 % 10 = 4
So 67-83-4 is a valid CAS Registry Number.