using System;
using System.Linq;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
		string url = "http://w...content-available-to-author-only...e.com/activated-alumina-desiccant/t101c5p232.aspx";
 
        var value = new Uri(url).Segments.Last();
        var parameters = String.Join("&", Regex.Matches(value, @"([a-zA-Z]+)(\d+)")
                                        .OfType<Match>()
                                        .Select(m => m.Groups[1] + "=" + m.Groups[2]).ToArray());
 
        var result = "http://w...content-available-to-author-only...e.com/Default.aspx?" + parameters;
        Console.WriteLine(result);
	}
}

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