23416-05-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23416-05-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,4,1 and 6 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 23416-05:
(7*2)+(6*3)+(5*4)+(4*1)+(3*6)+(2*0)+(1*5)=79
79 % 10 = 9
So 23416-05-9 is a valid CAS Registry Number.