2533-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2533-83-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,3 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2533-83:
(6*2)+(5*5)+(4*3)+(3*3)+(2*8)+(1*3)=77
77 % 10 = 7
So 2533-83-7 is a valid CAS Registry Number.