5540-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5540-87-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,4 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5540-87:
(6*5)+(5*5)+(4*4)+(3*0)+(2*8)+(1*7)=94
94 % 10 = 4
So 5540-87-4 is a valid CAS Registry Number.