Figure 2
From: Impact-induced amino acid formation on Hadean Earth and Noachian Mars

Amounts of amino acids (glycine, Gly; alanine, Ala; β-alanine, β-Ala; α-amino butyric acid, α-ABA; β-amino-iso-butyric acid, β-AIBA; sarcosine, Sar) produced in the iron meteorite (IM) and ordinary chondrite (OC) experiments (NH3-free, 20 mmol/L NH3 added, 2 mol/L NH3 added). Experiments were conducted three times for each condition and 1σ errors are shown.