Melezitose is a nonreducing trisaccharide sugar that is produced by many plant sap-eating insects, including aphids such as Cinara pilicornis. Melezitose is beneficial to the insects, as it reduces the stress of osmosis by reducing their own water potential. The melezitose is part of the honeydew which acts as an attractant for ants and also as a food for bees. Melezitose fatty acid monoesters are potential surfactants, that may solubilize hydrophobic drugs for parenteral formulations.

(±)-3A,7A-di-epi-Perindopril is a mixture of two isomers (S, RR, SS) and (R, SS, RR) each of which is an isomer of the antihypertensive drug perindopril. The first of which has the same activity as the compound while the second one is almost inactive.

(1''R,3AR)-1'',3A-di-epi-Perindopril is an epimer (S, RS, SR) of the drug perindopril which is commonly used to treat high blood pressure, hypertension, heart failure, or stable coronary artery disease. This form of the drug is much less active than the parent compound, perindopril.

(2R,7AR)-2,7A-di-epi-Perindopril is an epimer (R, SR, SS) of the drug perindopril which is commonly used to treat high blood pressure, hypertension, heart failure, or stable coronary artery disease. This form of the drug is much less active.

(±)-2,3A-di-epi-Perindopril is a mixture of two isomers (S, SR, RR) and (R, RS, SS) which are both inactive epimers of the antihypertensive drug perindopril, although the (R, RS, SS) isomer possesses better activity.