The soluble organic compounds of the Mukundpura meteorite: A new CM chondrite fall

We analyzed the water extracts of the recently fallen Mukundpura (MK) meteorite and searched for amino-, hydroxy- and carboxylic acids, amines and their possible enantiomeric excesses. All water-soluble compounds detected so far were found to have distributions similar to those identified in Murchison, with the main compositional differences of lower yields overall and absence in MK of longer chain compounds. Enantiomeric excesses were detected in MK for (S) isovaline and (S) sec-butylamine, the compounds that displayed them in several CM and CR chondrites. We also obtained a preliminary survey of MK hydrocarbons by extracting with solvent their water-extracted powders. MK hydrocarbons presented a suite containing far fewer linear species and is dominated by likely contaminants branched alkanes. Given the large variability of abundances and ee values reported so far within and between meteorites, repeat analyses of MK stones will be needed to better evaluate their extent in the new meteorite.