81423-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81423-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,2 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81423-72:
(7*8)+(6*1)+(5*4)+(4*2)+(3*3)+(2*7)+(1*2)=115
115 % 10 = 5
So 81423-72-5 is a valid CAS Registry Number.