57042-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57042-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,4 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57042-89:
(7*5)+(6*7)+(5*0)+(4*4)+(3*2)+(2*8)+(1*9)=124
124 % 10 = 4
So 57042-89-4 is a valid CAS Registry Number.