title: Determine if 10 digit string is valid Amazon ASIN
body: <p>I have a 10 digit string being passed to me, and I want to verify that it is a valid ASIN before doing more processing and/or redirection.</p>
  
  <p>I know that a non ISBN ASIN will always be non-numeric and 10 characters in length</p>
  
  <p>I just want to be able to tell if the item being passed is a valid ASIN or is it just a search string after I have already eliminated that it could be a ISBN.</p>
  
  <p>For example "SOUNDBOARD" is a search term while "B000J5XS3C" is an ASIN and "1412775884" is an ISBN.</p>
  
  <p>Is there a lightweight way to check ASIN?</p>