51-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51-54-7 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 5 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 51-54:
(4*5)+(3*1)+(2*5)+(1*4)=37
37 % 10 = 7
So 51-54-7 is a valid CAS Registry Number.