39728-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39728-23-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,7,2 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 39728-23:
(7*3)+(6*9)+(5*7)+(4*2)+(3*8)+(2*2)+(1*3)=149
149 % 10 = 9
So 39728-23-9 is a valid CAS Registry Number.