448-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 448-81-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,4 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 448-81:
(5*4)+(4*4)+(3*8)+(2*8)+(1*1)=77
77 % 10 = 7
So 448-81-7 is a valid CAS Registry Number.