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

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

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

(S)-2-Amino-N-isopropyl-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-propionamide

(S)-2-Amino-N-isopropyl-3-methyl-N-(1-pyrazin-2-yl-ethyl)-butyramide

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

[(Pyrazin-2-ylmethyl)-amino]-acetic acid

[Cyclopropyl-(3-methylsulfanyl-pyrazin-2-ylmethyl)-amino]-acetic acid

[(6-Chloro-pyridazin-3-ylmethyl)-methyl-amino]-acetic acid