73839-58-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73839-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,3 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73839-58:
(7*7)+(6*3)+(5*8)+(4*3)+(3*9)+(2*5)+(1*8)=164
164 % 10 = 4
So 73839-58-4 is a valid CAS Registry Number.