1 9B3 (2~{S})-2-[(6-azanyl-5-chloranyl-pyridin-3-yl)methyl]-3-selanyl-propanoic acid 1.000 2 A1H6Z (2~{S})-2-azanyl-3-(6-azanylpyridin-3-yl)propanal 0.750 3 SJW 3-pyridin-3-ylpropanal 0.733