73283-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73283-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,2,8 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 73283-57:
(7*7)+(6*3)+(5*2)+(4*8)+(3*3)+(2*5)+(1*7)=135
135 % 10 = 5
So 73283-57-5 is a valid CAS Registry Number.