54757-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54757-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,7,5 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54757-21:
(7*5)+(6*4)+(5*7)+(4*5)+(3*7)+(2*2)+(1*1)=140
140 % 10 = 0
So 54757-21-0 is a valid CAS Registry Number.