2-Chloro-N-cyclopropyl-N-(1-pyrazin-2-yl-ethyl)-acetamide

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

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

(S)-2-Amino-N-cyclopropyl-N-(3-methylsulfanyl-pyrazin-2-ylmethyl)-propionamide

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

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

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