Figure 1
From: Impact-induced amino acid formation on Hadean Earth and Noachian Mars

Multiple reaction monitoring (MRM) chromatogram of derivatized standards and the derivatized product of NH3-free experiment with the iron meteorite (IM) analogue. (a) 12C-glycine (Gly) (mass-to-charge ratio (m/z) = 246 > 171) and product, 13C-glycine (13C-Gly) (m/z = 248 > 171). (b) 12C-alanine (Ala), 12C-β-alanine (β-Ala), and sarcosine (Sar) (m/z = 260 > 171) and product.