A compound comprising one or more of 6-[5-[(1S)-1-aminoethyl]-3-ethyl-1,2,4-triazol-1-yl]pyridine-3-carbonitrile hydrochloride, 6-[5-[(1S)-1-aminoethyl]-3-isopropyl-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, 6-[5-[(1S)-1-aminoethyl]-3-cyclopropyl-1,2,4-triazol-1-yl]pyridine-3-carbonitrile hydrochloride, 6-[5-(1-aminoethyl)-3-(difluoromethyl)-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, 6-[5-[(1S)-1-aminoethyl]-3-methoxy-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, 6-[5-[(1S)-1-aminoethyl]-3-ethoxy-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, 6-[5-[(1S)-1-aminoethyl]-3-isopropoxy-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, (1S)-1-[1-(5-chloropyrimidin-2-yl)-3-cyclopropyl-1H-1,2,4-triazol-5-yl]ethanamine hydrochloride, (1S)-1-[1-(5-chloropyridin-2-yl)-3-methoxy-1H-1,2,4-triazol-5-yl]ethanamine, (1S)-1-[1-(5-chloropyridin-2-yl)-3-cyclopropyl-1H-1,2,4-triazol-5-yl]ethanamine hydrochloride, (1S)-1-[1-(5-chloropyrimidin-2-yl)-3-methoxy-1H-1,2,4-triazol-5-yl]ethanamine, 6-[5-(1-aminoethyl)-3-iodo-1H-1,2,4-triazol-1-yl]nicotinonitrile, 6-[5-(1-aminoethyl)-3-bromo-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, 6-[5-(1-aminoethyl)-3-chloro-1,2,4-triazol-1-yl]pyridine-3-carbonitrile, and salts thereof and in case of amine hydrochlorides the free amines.