1 2HD (2r)-2,3-dibutoxypropyl (R)-octylphosphinate 1.000 2 HY4 (2r)-2,3-dibutoxypropyl hydrogen (S)-propylphosphonate 0.760 3 C63 (2r)-2,3-bis(hexyloxy)propyl hydrogen (S)-pentylphosphonate 0.724