57438-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57438-52-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,3 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57438-52:
(7*5)+(6*7)+(5*4)+(4*3)+(3*8)+(2*5)+(1*2)=145
145 % 10 = 5
So 57438-52-5 is a valid CAS Registry Number.