72733-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72733-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,3 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 72733-57:
(7*7)+(6*2)+(5*7)+(4*3)+(3*3)+(2*5)+(1*7)=134
134 % 10 = 4
So 72733-57-4 is a valid CAS Registry Number.