Assessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition

@article{Aponte2014AssessingTO,
  title={Assessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition},
  author={José C. Aponte and Jason P. Dworkin and Jamie E. Elsila},
  journal={Geochimica et Cosmochimica Acta},
  year={2014},
  volume={141},
  pages={331-345}
}
The study of meteoritic organic compounds provides a unique window into the chemical inventory of the early Solar System and prebiotic chemistry that may have been important for the origin of life on Earth. Multiple families of organic compounds have been extracted from the Murchison meteorite, which is one of the most thoroughly studied carbonaceous chondrites. The amino acids extracted from Murchison have been extensively analyzed, including measurements of nonterrestrial stable isotopic… 
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Methods Citations
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References

SHOWING 1-10 OF 83 REFERENCES
Unusual stable isotope ratios in amino acid and carboxylic acid extracts from the Murchison meteorite
TLDR
The isotopic composition of hydrogen, nitrogen and carbon in amino acid and monocarboxylic acid extracts from the Murchison meteorite confirms the extraterrestrial origin of both classes of compound, and provides the first evidence suggesting a direct relationship between the massive organo-synthesis occurring in interstellar clouds and the presence of pre-biotic compounds in primitive planetary bodies.
The Chiral Amines of the Murchison Meteorite: A Preliminary Characterization
L-enantiomeric excesses have been determined for some amino acids of the Murchison and Murray meteorites [1-4]. The finding has taken a particular significance in view of the homochiral distribution…
Isotopic analyses of nitrogenous compounds from the Murchison meteorite: ammonia, amines, amino acids, and polar hydrocarbons.
TLDR
The delta 15N values of the Murchison soluble organic compounds analyzed to date fall within a rather narrow range, an observation consistent with their formation, or formation of their precursors, by interstellar chemistry.
Carbon isotope composition of low molecular weight hydrocarbons and monocarboxylic acids from Murchison meteorite
TLDR
The results suggest the possibility that the production mechanisms for hydrocarbons and carboxylic acids may be similar and impose constraints on the identity of the reactant species, and are consistent with the kinetically controlled synthesis of higher homologues from lower ones.
Isotopic analyses of amino acids from the Murchison meteorite.
TLDR
The results indicate that the Murchison amino acids are truly isotopically unusual, that the isotopic excesses reside in at least several different amino acids, and thatThe isotopic contents of some of these amino acids reach values of about +40% (delta 13C) and +2500% ( delta D).
Organic matter in meteorites: molecular and isotopic analyses of the Murchison meteorite.
Carbonaceous chondrites comprise a unique subset of meteorites. Two classes of carbonaceous chondrites, the so-called CI1 and CM2 chondrites, are particularly interesting, in part because of their…
Carbon isotope composition of individual amino acids in the Murchison meteorite
TLDR
The amino acids in the Murchison meteorite are enriched in 13C, indicating an extraterrestrial origin, and Alanine is not racemic, and the 13C enrichment of its D- and L-enantiomers implies that the excess of the L- enantiomer is indigenous rather than terrestrial contamination, suggesting that optically active materials were present in the early Solar System before life began.
Molecular and compound-specific isotopic characterization of monocarboxylic acids in carbonaceous meteorites
Abstract Low molecular weight monocarboxylic acids are the most abundant water soluble organic compounds in the Murchison and many other CM type carbonaceous chondrites. In this study, we examined…
Isotopic and molecular analyses of hydrocarbons and monocarboxylic acids of the Murchison meteorite.
TLDR
Molecular analyses of the aromatic hydrocarbons showed them to comprise a complex suite of compounds in which pyrene, fluoranthene, phenanthrene, and acenaphthene were the most abundant components, a result similar to earlier analyses.
Molecular and chiral analyses of some protein amino acid derivatives in the Murchison and Murray meteorites
— The varied organic suite extracted from the Murchison meteorite contains several amino acids that are common to the biosphere. Some of these have been found to be non-racemic, but the indigenous…
...
1
2
3
4
5
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