57271-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57271-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,7 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57271-89:
(7*5)+(6*7)+(5*2)+(4*7)+(3*1)+(2*8)+(1*9)=143
143 % 10 = 3
So 57271-89-3 is a valid CAS Registry Number.