Template:CAS


 * Gebruik


 * If the first parameter contains a valid CAS-number bevat (e.g. no letters) a link will be placed to the "National Library of Medicine - Medical Subject Headings". If it is not a valid number, plain text will be shown. In any case, leading and ending spaces are trimmed. Text in the second parameter (if given) will be shown as plain text.


 * Example:


 * Error messages
 * 1) Parameter is empty (no CAS number given)