5491-38-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5491-38-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,9 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5491-38:
(6*5)+(5*4)+(4*9)+(3*1)+(2*3)+(1*8)=103
103 % 10 = 3
So 5491-38-3 is a valid CAS Registry Number.