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

(S)-2-Amino-3,N-dimethyl-N-(1-pyrazin-2-yl-ethyl)-butyramide

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

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

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

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

(1-Pyrazin-2-yl-ethylamino)-acetic acid

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

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

2-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-1-thiophen-2-yl-ethanone

2-[(2-Hydroxy-ethyl)-isopropyl-amino]-1-thiophen-2-yl-ethanone