54971-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54971-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,7 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 54971-40:
(7*5)+(6*4)+(5*9)+(4*7)+(3*1)+(2*4)+(1*0)=143
143 % 10 = 3
So 54971-40-3 is a valid CAS Registry Number.