| タイトル | Stereoisomers of isovaline in the Murchison meteorite |
| 著者（英） | Pollock, G. E.; Kvenvolden, K. A.; Cheng, C.-N.; Cronin, S. E. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 1975-11-01 |
| 言語 | eng |
| 内容記述 | Isovaline is present in the Murchison meteorite as a racemic mixture (about equal concentrations of the R and S enantiomers). Since isovaline does not have a hydrogen atom on its asymmetric alpha-carbon atom, the racemic mixture could not have formed by commonly accepted mechanisms of racemization. Thus, isovaline in the meteorite most probably was synthesized as a racemic mixture and is not the result of the racemization of either the R or S enantiomer. Other chiral amino acids in the meteorite are present as racemic mixtures, and were probably synthesized in a similar manner by abiotic, extraterrestrial processes. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 76A11071 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/445187 |
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