2-Amino-N-(3-chloro-pyrazin-2-ylmethyl)-N-isopropyl-acetamide

2-Chloro-N-isopropyl-N-(2-oxo-2-pyrazin-2-yl-ethyl)-acetamide

2-Amino-N-(6-chloro-pyridazin-3-ylmethyl)-acetamide

2-Amino-N-(6-chloro-pyridazin-3-ylmethyl)-N-methyl-acetamide

(S)-2-Amino-N-pyrazin-2-ylmethyl-propionamide

(S)-2-Amino-3-methyl-N-pyrazin-2-ylmethyl-butyramide

(S)-2-Amino-N-isopropyl-N-(3-methoxy-pyrazin-2-ylmethyl)-propionamide

(S)-2-Amino-N-(3-chloro-pyrazin-2-ylmethyl)-N-isopropyl-3-methyl-butyramide

(S)-2-Amino-N-cyclopropyl-N-(1-pyrazin-2-yl-ethyl)-propionamide

(S)-2-Amino-N-isopropyl-N-(2-oxo-2-pyrazin-2-yl-ethyl)-propionamide

(S)-2-Amino-N-(6-chloro-pyridazin-3-ylmethyl)-N-methyl-propionamide

(Methyl-pyrazin-2-ylmethyl-amino)-acetic acid

[(3-Methoxy-pyrazin-2-ylmethyl)-methyl-amino]-acetic acid

[(3-Chloro-pyrazin-2-ylmethyl)-methyl-amino]-acetic acid

[Isopropyl-(2-oxo-2-pyrazin-2-yl-ethyl)-amino]-acetic acid