54639-26-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54639-26-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,3 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 54639-26:
(7*5)+(6*4)+(5*6)+(4*3)+(3*9)+(2*2)+(1*6)=138
138 % 10 = 8
So 54639-26-8 is a valid CAS Registry Number.