54999-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54999-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,9 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 54999-65:
(7*5)+(6*4)+(5*9)+(4*9)+(3*9)+(2*6)+(1*5)=184
184 % 10 = 4
So 54999-65-4 is a valid CAS Registry Number.