72338-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72338-73-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,3,3 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 72338-73:
(7*7)+(6*2)+(5*3)+(4*3)+(3*8)+(2*7)+(1*3)=129
129 % 10 = 9
So 72338-73-9 is a valid CAS Registry Number.