1.0 2010-04-08 22:05:34 UTC 2025-11-18 22:41:48 UTC FDB002916 Undecanal Undecanal, also known as undecyl aldehyde, belongs to the class of organic compounds known as medium-chain aldehydes. These are aldehydes with a chain length containing between 6 and 12 carbon atoms. Thus, undecanal is considered to be a fatty aldehyde lipid molecule. Undecanal is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Undecanal is a sweet, aldehydic, citrus-tasting compound. It is a colourless, oily liquid frequently used in perfumes. It is produced commercially by hydroformylation of decene. Undecanal is found in a number of food products including corianders and carrots, celery stalks, wild celeries, evergreen blackberries, corns, and sweet basils. This could make undecanal a potential biomarker for the consumption of these foods. Undecanal is also found in many essential oils including citrus orange essential oil and grapefruit essential oil.. Undecanal is also a male sex pheromone used by the greater wax moth, Galleria mellonella (PMID: 24692052). 1-Undecanal Aldehyde C-11 C11 aldehyde FEMA 3092 Hendecanal Hendecanaldehyde N-Indecyl aldehyde N-Undecanal Undecanaldehyde Undecyl aldehyde Undecylaldehyde Undecylic aldehyde C11H22O 170.2918 170.167065326 undecanal undecanal 112-44-7 CCCCCCCCCCC=O InChI=1S/C11H22O/c1-2-3-4-5-6-7-8-9-10-11-12/h11H,2-10H2,1H3 KMPQYAYAQWNLME-UHFFFAOYSA-N belongs to the class of organic compounds known as medium-chain aldehydes. These are an aldehyde with a chain length containing between 6 and 12 carbon atoms. Medium-chain aldehydes Organic compounds Organic oxygen compounds Organooxygen compounds Carbonyl compounds Aliphatic acyclic compounds Alpha-hydrogen aldehydes Hydrocarbon derivatives Organic oxides Aliphatic acyclic compound Alpha-hydrogen aldehyde Hydrocarbon derivative Medium-chain aldehyde Organic oxide Fatty aldehydes fatty aldehyde Liquid logp 4.98 ALOGPS logs -4.93 ALOGPS solubility 2.01e-03 g/l ALOGPS melting_point Mp -4° logp 3.88 ChemAxon pka_strongest_acidic 17.79 ChemAxon pka_strongest_basic -6.9 ChemAxon iupac undecanal ChemAxon average_mass 170.2918 ChemAxon mono_mass 170.167065326 ChemAxon smiles CCCCCCCCCCC=O ChemAxon formula C11H22O ChemAxon inchi InChI=1S/C11H22O/c1-2-3-4-5-6-7-8-9-10-11-12/h11H,2-10H2,1H3 ChemAxon inchikey KMPQYAYAQWNLME-UHFFFAOYSA-N ChemAxon polar_surface_area 17.07 ChemAxon refractivity 53.15 ChemAxon polarizability 22.77 ChemAxon rotatable_bond_count 9 ChemAxon acceptor_count 1 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::EiMs 1948 Specdb::NmrOneD 3800 Specdb::NmrOneD 4065 Specdb::CMs 18740 Specdb::CMs 29228 Specdb::CMs 29284 Specdb::CMs 100574 Specdb::CMs 100575 Specdb::CMs 154723 Specdb::MsIr 4023 Specdb::MsIr 4024 Specdb::MsMs 6947 Specdb::MsMs 6948 Specdb::MsMs 6949 Specdb::MsMs 13619 Specdb::MsMs 13620 Specdb::MsMs 13621 Specdb::MsMs 2331911 Specdb::MsMs 2331912 Specdb::MsMs 2331913 Specdb::MsMs 2630732 Specdb::MsMs 2630733 Specdb::MsMs 2630734 HMDB30941 UNA #<Reference:0x000055ce32333780> Blackberry Type 1 specific Rubus Carrot Type 1 specific Daucus carota ssp. sativus 79200 0.0 0.0 0.0 mg/100 g Celery stalks Type 1 specific Apium graveolens var. dulce 117781 Citrus Unknown generic Coriander Type 1 specific Coriandrum sativum 4047 15.425 30.4 0.45 mg/100 g Corn Type 1 specific Zea mays 4577 Cucumber Type 1 specific Cucumis sativus 3659 Evergreen blackberry Type 1 specific Rubus laciniatus Fruits Unknown generic Lemon Type 1 specific Citrus limon 2708 Mandarin orange (Clementine, Tangerine) Type 1 specific Citrus reticulata 85571 Rocket salad (ssp.) Type 1 specific Eruca vesicaria ssp. sativa 29727 Sweet basil Type 1 specific Ocimum basilicum 39350 Sweet orange Type 1 specific Citrus sinensis 2711 Wild celery Type 1 specific Apium graveolens 4045 aldehydic citrus fatty floral fresh green laundry oil pungent soapy sweet waxy Name 936 A substance, extract, or preparation for diffusing or imparting an agreeable or attractive smell. Perfumery 1206 A substance, extract, or preparation for diffusing or imparting an agreeable or attractive smell.