54979-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54979-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,7 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 54979-99:
(7*5)+(6*4)+(5*9)+(4*7)+(3*9)+(2*9)+(1*9)=186
186 % 10 = 6
So 54979-99-6 is a valid CAS Registry Number.