You can sign up here http://www.chromacademy.com/ and take help for your libraries. If you are a student and got institution email id you will get free registration for 5 years sponsored by Agilent, I guess.

http://www.chromacademy.com/

Www.wiley.com

and

http://www.sisweb.com/software/ms/nist.htm

You have to by them

Of course!

there are some books also that you can by. As far as I know there have been some places at the internet that can give you a suggestion of a mass spectrum but a reliable data base is not free. I have a MS database from NIST

I like the one at the NIST webpage:

http://webbook.nist.gov/chemistry/

Http://gmd.mpimp-golm.mpg.de/download/

Also check ACD/LABS academic edition it may help and also Cambridge university website may give you more information thanks

Thanks for your answers, i think the best option is buy the libraries. I will check the webs that you give to me. Thanks again , regards.

Only one opstion, I think so you perchage the librairy and other wise, there have been some search places at the internet that can give you a suggestion of a mass spectrum but a reliable data base is not free...

I know that the compony does not give you free version you should perchase it

Soory I also think that the library who take the GC/MS for you can give you the software for post processing as we give it to our collauge

Hi You can make a library for yourself only limited for the chemicals that you are interested in.

Try on this website

http://www.swgdrug.org/ms.htm

Hallo Sebastian,

for GC-MS EI Fragmentation the GMD libary is the best, which are free available. Have look to partner labs, usually they use NIST. If you match both libaries you are able to identify the most metabolites which are identifiable via EI Fragmentation (usually 80-100 componds). Have look to my papers,  the methods are described.

http://gmd.mpimp-golm.mpg.de/

For target analysis you have to buy one or you have to establish it by your own.

Hola, ya las conseguiste?

Can I have these lib

This is a great list of GC (and LC) databases: http://prime.psc.riken.jp/Metabolomics_Software/MS-DIAL/index.html

https://webbook.nist.gov/

sorry, nowadays you should purchase a library or try NISTDEMO

Try this website

https://www.pherobase.com/

If you need identify, send me a mass spectrum. I will try to identify your compounds.

Depends on what compounds you are looking at. I found this:

https://www.lipidmaps.org/resources/lipidweb/index.php?page=ms/methesters/me-arch/index.htm

really helpful in my line of work

Henry Lozano Pereira , I am not the topic starter here, but I might need your help myself. I have a bunch of weird compounds, probably terpenoid, with a base peak at m/z=95, does that ring familiar? Any idea what that might be?

With a single peak I could not tell you. What I can tell you to show me or send me the complete mass spectrum, I will analyze it and tell you my impressions.

On the topic of libraries, it is important to note that there are a lot of libraries available. Many of the libraries are strictly for purchase only. The other point to note is that any library is only going to give you some number of best matches for what is in the library. If the species of interest is not in the library, then you won't get a meaningful answer from the library.

You can follow department of pharmacognosy, EDA, Giza.

@mohamed elraei

Oi Edgar! Será que não tem no próprio computador?

https://gnps-external.ucsd.edu/gnpslibrary