(2-Oxo-2-pyrazin-2-yl-ethylamino)-acetic acid

2-(1-Thiazol-2-yl-ethylamino)-ethanol

2-[Cyclopropyl-(1-thiazol-2-yl-ethyl)-amino]-ethanol

N*1*-Isopropyl-N*1*-(3-methyl-thiophen-2-ylmethyl)-ethane-1,2-diamine

2-Amino-N-cyclopropyl-N-(2-furan-2-yl-2-oxo-ethyl)-acetamide

2-Amino-N-(2-oxo-2-thiophen-2-yl-ethyl)-acetamide

2-Amino-N-(1-thiazol-2-yl-ethyl)-acetamide

2-Amino-N-cyclopropyl-N-furan-2-ylmethyl-acetamide

2-Amino-N-thiophen-3-ylmethyl-acetamide

2-Amino-N-cyclopropyl-N-(3-methyl-thiophen-2-ylmethyl)-acetamide

(S)-2-Amino-3,N-dimethyl-N-(2-oxo-2-thiophen-2-yl-ethyl)-butyramide