## Compression of polymers

Fischer projections of carbohydrates Monosaccharides are simple sugars with multiple hydroxyl groups (Molecular Biochemistry 1, 2013: 1). Monosaccharides (Wikipedia, ‘2-Carb-3 Carb and 2-Carb-4’, 2013: 3-4). D-Glucose CHO-HCOH-HCOH-HCOH-HCOH-CH2OH A compressed version of D-glucose would have the 4 HCOH units notated as HCOH(4) and would be written as follows: D-Glucose (Compressed) CHO-HCOH(4)–CH2OH D-Xylose CHO-HCOH-HCOH-HCOH-CH2OH A compressed version of D-Xylose would have the 3 HCOH units notated as HCOH(3) and would be written as follows: D-Xylose (Compressed) CHO-HCOH(3)–CH2OH D-arabino-Hex-2-ulose CH2OH-C=0-HOCH-HCOH-(D-Fructose) HCOH-CH2OH

A compressed version of D-arabino-Hex-2-ulose would have the 2 HCOH units notated as HCOH(2) and would be written as follows: D-arabino-Hex-2-ulose CH2OH-C=0-HOCH-(Compressed) HCOH(2)–CH2OH D-glycero-gulo-Heptose CHO-HCOH-HCOH-HCOH-HCOH-HCOH-CH2OH A compressed version of D-glycero-gulo-Heptose would have the 5 HCOH units notated as HCOH(5) and would be written as follows: D-glycero-gulo-Heptose CHO-HCOH(5)–CH2OH (Compressed) L-Arabinose CHO-HCOH-HOCH-HOCH-CH2OH A compressed version of L-Arabinose would have the 3 HCOH units notated as HCOH(3) and written as follows: L-Arabinose CHO-HCOH(3)–CH2OH (Compressed) L-glycero-D-manno-Heptose CHO-HOCH-HOCH-HCOH-HCOH-HOCH-CH2OH A compressed version of L-glycero-D-manno-Heptose would have the 2 HOCH and 2 HCOH units notated as HOCH(2) and HCOH(2) and written as follows: L-glycero-D-manno-Heptose CHO-HOCH(2)–HCOH(2)– (compressed) HOCH-CH2OH