[(2R,3S)-2,3-diacetyloxy-4-oxobutyl] acetate

peracetylated lyxose

(2E)-2-[(2,4-dinitrophenyl)hydrazinylidene]ethanol

4-nitro-N-[(E)-[(2E)-2-[(4-nitrophenyl)hydrazinylidene]ethylidene]amino]aniline

glycolaldehyde-(4-nitro-phenylhydrazone)