Author Topic: indole spectra  (Read 7112 times)

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  • Guest
indole spectra
« on: July 17, 2004, 02:22:00 PM »
Ok this is a long shot but who knows... perhaps someone could interpret this:

Chromatogram A: positive chemical ionisation with CH4, the most visual peak at 8,30 min

Chromatrogram B: postivie electron impact ionisation of sample (BSTFA+1% TMCIS), selected mass trace m/z 396

Chromatogram C: MS/MS

Van Urk –Salkowski reagent test colors skyblue, the compound is UV fluorescent and it was supposed to be LSD freebase but the chromatograms seems to say otherwise.

Does anybody have suggestions ?


  • Guest
More information
« Reply #1 on: July 17, 2004, 03:43:00 PM »
I would like to help you, but are you sure the endproduct you are looking for is LSD ? Chromatogram B is made by tracing m/z 395 so an incorrect mass has been looked at? Which synthetic route was used to produce this so-called LSD freebase ?


  • Guest
searched for compound
« Reply #2 on: July 17, 2004, 03:51:00 PM »
The analysis was not performed by me and am mostly puzzled about this aswell.
Highly doubtfull but possible is that the person was looking for the mass of lysergic acid diethylamide dihydrate (mass 359,46).


  • Guest
What chemicals were used?
« Reply #3 on: July 17, 2004, 04:30:00 PM »
Hmm, a nice puzzle you gave me Vaaguh....From the CI data it is difficult to tell what the mol mass is of this unknown compound. There is no clear M+1(H)/M+17(CH5) combination as you would expect for a methane CI measurement. The fragmention pattern is unknown to me and not comparable with the LSD (silylated) spectrum I´ve from literature. What else could have been attached to the acid group? You used diethylamine of sufficient purity ?

Damn, there goes my saturday night  :P


  • Guest
« Reply #4 on: July 17, 2004, 04:43:00 PM »

You used diethylamine of sufficient purity

Not sure but assumed so  ::)  (CDI method by the way), thanks in advance for helping me out here