Figure 1
From: Prebiotic formation of cyclic dipeptides under potentially early Earth conditions
HPLC-MS profile for the reaction products of the L-Pro with P3m. (a) HPLC profile for the reaction products of the L-Pro with P3m at 210 nm. (b) MS profile for the LPD (peak 1, M1 = 212, R.T. = 5.5 min). (c) MS profile for the cyclo-Pro-Pro (peak 2, M2 = 194, R.T. = 12.6 min). (d) MS2 profile for the cyclo-Pro-Pro (M2 = 194, R.T. = 12.6 min).
