16540-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16540-93-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,4 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 16540-93:
(7*1)+(6*6)+(5*5)+(4*4)+(3*0)+(2*9)+(1*3)=105
105 % 10 = 5
So 16540-93-5 is a valid CAS Registry Number.