D-glyceraldehyde (hydroxy group at the highest numbered asymmetric carbon atom is written to the right): CH2 OH CHO HO C H L-glyceraldehyde (hydroxy group at the highest numbered asymmetric carbon atom is written to the left): D-Erythrose is the mirror image of L-Erythrose. CH2 OH OH CHO H CD-glyceraldehyde (hydroxy group at the highest numbered asymmetric carbon atom is written to the right): CH2 OH CHO HO C H L-glyceraldehyde (hydroxy group at the highest numbered asymmetric carbon atom is written to the left): D-Erythrose is the mirror image of L-Erythrose. CH2 OH OH CHO H C