Is there a database on chemical reactions, similar to NIST, but far more complete?

The only thing I'm interested in is to be able to search all reactions involving that compound in the database. Equilibrium constant, reaction rate and energy of activation would all be very welcome, but in case these data are absent it's no big deal.


Doesn't need to be an online database either, I can download a software if it contains such data.




The best known databases are Beilstein and Chemical Abstracts with around 22 millions reactions each since the end of the 19th century but they are commercial.


Organic Syntheses has made available its database for free and it covers 6000 reactions. One of the greatest advantages is that each step is described in depth and each reaction has been thoroughly tested prior to publication.


Have a look [here](http://www.organicworldwide.net/content/reaction-databases) for a list of databases.


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SciFinder could be very useful in your case (Reaction option). However, you need to subscribe it first as it is not freely accessible.


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The best thing that comes to mind is Scifinder (<https://scifinder.cas.org/>). You can search scientific publications by molecule or by reaction. I've used it for organic chemistry, I have no idea of how comprehensive will it be with other fields of chemistry. And you will need to sign up. Perhaps your school has the credentials.


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A really nice database for reactions is Rhea. It is useful especially for biochemistry and has rather nice credentials such as support from the Swiss Institute for Bioinformatics. In my opinion, it is rather user friendly. Just type the reaction you want into the search bar at the very top.


Although it is a bit lacking in UX (User Experience and design), it has a lot of information with really nice diagrams.


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I use the [www.reaxys.com](https://www.reaxys.com/) most often, as it is really simple to use. See comparison of similar solutions at:


<http://www.infotoday.com/OnlineSearcher/Articles/InDepth-Reports/Apples-and-Oranges-A-Chemistry-Searcher-Compares-CAS-SciFinder-and-Elseviers-Reaxys-91663.shtml>


or 


<http://csulb.libanswers.com/faq/30611>


Both scifinder and reaxys are paid, universities can have institutional access to them.


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