Crystal structure and chirality of natural floridoside

The crystal structure and absolute configuration of natural floridoside (2-O-α-d-galactopyranosylglycerol) were determined by single-crystal X-ray diffraction analysis. The space group is orthorhombic P212121 with Z=4, a=4.885(1), b=9.734(1), c=23.886(2) Å at 296±2 K. The structure was solved by a direct method and refined to R=0.0351 from 1914 reflections of Cu Kα radiation.