54778-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54778-89-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,7,7 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 54778-89:
(7*5)+(6*4)+(5*7)+(4*7)+(3*8)+(2*8)+(1*9)=171
171 % 10 = 1
So 54778-89-1 is a valid CAS Registry Number.