16493-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16493-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,4,9 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16493-81:
(7*1)+(6*6)+(5*4)+(4*9)+(3*3)+(2*8)+(1*1)=125
125 % 10 = 5
So 16493-81-5 is a valid CAS Registry Number.