Keep first 150 chars of string

If I have an incoming string.  How can I use regex or something else to take that string, and keep only the first 150 chars and also exclude any HTML, line-feed, carriage returns, or tabs?

I am working on cleaning some of our descriptons and not sure the best methods to do this and how I'd go about it.

example incoming string:

In any organization, recognizing and understanding the nature and impact of toxic behaviors can provide for the ability to manage the adverse environment and mitigate the potential risks that we often face in the workplace. In Coping with Toxic Managers , Roy Lubit skillfully tackles this complicated topic by presenting the psychological aspects of toxic behaviors in a manner that is understandable and embraceable. This is not one of those 'flavor of the month' pop-psychology books-;it's truly about the science of how and why toxic people think, act, and react. Read this book and you may start looking at the people in your organization quite differently.<br><br><b>You can also purchase the individual chapters:</b><br><a href="/Product/ProductInfo.aspx?ProductID=107334">Chapter 1: Emotional Intelligence Approach to Coping with Toxic Managers and Subordinates</a><br><a href="/Product/ProductInfo.aspx?ProductID=107335">Chapter 2: Narcissistic Managers</a><br>’