Unity singleton class inheritance

public class Singleton where T : class, new()
{
private static T _instance;
private static readonly object syslock = new object();

public static T Instance
{
    get
    {
        if (_instance == null)
        {
            lock (syslock)
            {
                if (_instance == null)
                {
                    _instance = new T();
                }
            }
        }
        return _instance;
    }
}

}

Example of use:
public class MyClass:Singleton
{}