help !! GC-MS database sterol ecdysones

[Merlin]

Hi everybody
I just finished experiments of GC-MS, and I have 3 undetermined peaks. I
searched for oxysterols, but there are not (ecdysones??). Where can I
found a MS database; ie enter my peaks and get some clues?

cheers
Olivier

[Chip]

I understand that you looked in the NIST database and did not find a
suitable match. You might want to look at the Wiley or Palisade's
databases as well. There is apparently an updated version of the
steroid library:

<http://www.laboratorytalk.com/news/jhn/jhn103.html>

You may have to interpret the spectrum manually -- even if you do find
a match, please check the fragmentation to make sure it can be
logically explained.

Good luck!

Chip

Post by Merlin
Hi everybody
I just finished experiments of GC-MS, and I have 3 undetermined peaks. I
searched for oxysterols, but there are not (ecdysones??). Where can I
found a MS database; ie enter my peaks and get some clues?
cheers
Olivier

[Merlin]

looks great, thanks a lot !

Post by Chip
I understand that you looked in the NIST database and did not find a
suitable match. You might want to look at the Wiley or Palisade's
databases as well. There is apparently an updated version of the
<http://www.laboratorytalk.com/news/jhn/jhn103.html>
You may have to interpret the spectrum manually -- even if you do find
a match, please check the fragmentation to make sure it can be
logically explained.
Good luck!
Chip

Post by Merlin
Hi everybody
I just finished experiments of GC-MS, and I have 3 undetermined peaks. I
searched for oxysterols, but there are not (ecdysones??). Where can I
found a MS database; ie enter my peaks and get some clues?
cheers
Olivier

[Merlin]

Post by Chip
I understand that you looked in the NIST database and did not find a
suitable match.

good guess !!!
thank you for the reference I will check it asap.