54957-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54957-74-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,5 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 54957-74:
(7*5)+(6*4)+(5*9)+(4*5)+(3*7)+(2*7)+(1*4)=163
163 % 10 = 3
So 54957-74-3 is a valid CAS Registry Number.