In meteorites, carboxylic acids outweigh the corresponding amino acids by

Range ~50 fold
Organism Biosphere
Reference Schönheit P, Buckel W, Martin WF. On the Origin of Heterotrophy. Trends Microbiol. 2016 Jan24(1):12-25. doi: 10.1016/j.tim.2015.10.003. p.14 top paragraphPubMed ID26578093
Primary Source [36] Sephton, M.A. (2002) Organic compounds in carbonaceous meteorites. Nat. Prod. Rep. 19, 292–311PubMed ID12137279
Comments P.14 top paragraph:"A common theme of meteorite organics is ‘complete structural diversity’, meaning that a plethora of isomers for a given chemical formula are present [primary source], with meteoritic carboxylic acids outweighing the corresponding amino acids by about 50-fold."
Entered by Uri M
ID 112449