1.0 2010-04-08 22:05:33 UTC 2025-11-18 22:41:27 UTC FDB002879 Cepagenin Genin isol from Allium cepa (onion). Cepagenin is found in garden onion and onion-family vegetables. Cepagenin C27H42O5 446.6194 446.303224454 5,7',9',13'-tetramethyl-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosan]-18'-ene-4,14',16'-triol 5,7',9',13'-tetramethyl-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosan]-18'-ene-4,14',16'-triol 114317-59-8 CC1C2C(CC3C4CC=C5CC(O)CC(O)C5(C)C4CCC23C)OC11CC(O)C(C)CO1 InChI=1S/C27H42O5/c1-14-13-31-27(12-21(14)29)15(2)24-22(32-27)11-20-18-6-5-16-9-17(28)10-23(30)26(16,4)19(18)7-8-25(20,24)3/h5,14-15,17-24,28-30H,6-13H2,1-4H3 MHNJMWLWHYJLNF-UHFFFAOYSA-N belongs to the class of organic compounds known as triterpenoids. These are terpene molecules containing six isoprene units. Triterpenoids Organic compounds Lipids and lipid-like molecules Prenol lipids Triterpenoids Aliphatic heteropolycyclic compounds 1-hydroxysteroids 3-hydroxy delta-5-steroids Cyclic alcohols and derivatives Delta-5-steroids Hydrocarbon derivatives Ketals Oxacyclic compounds Oxanes Polyols Secondary alcohols Spirostanes and derivatives Tetrahydrofurans 1-hydroxysteroid 24-hydroxysteroid 3-hydroxy-delta-5-steroid 3-hydroxysteroid Acetal Alcohol Aliphatic heteropolycyclic compound Cyclic alcohol Delta-5-steroid Hydrocarbon derivative Hydroxysteroid Ketal Organic oxygen compound Organoheterocyclic compound Organooxygen compound Oxacycle Oxane Polyol Secondary alcohol Spirostane skeleton Steroid Tetrahydrofuran Triterpenoid logp 1.83 ALOGPS logs -4.39 ALOGPS solubility 1.83e-02 g/l ALOGPS melting_point Mp 267-269° logp 2.64 ChemAxon pka_strongest_acidic 14.26 ChemAxon pka_strongest_basic -2.8 ChemAxon iupac 5,7',9',13'-tetramethyl-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icosan]-18'-ene-4,14',16'-triol ChemAxon average_mass 446.6194 ChemAxon mono_mass 446.303224454 ChemAxon smiles CC1C2C(CC3C4CC=C5CC(O)CC(O)C5(C)C4CCC23C)OC11CC(O)C(C)CO1 ChemAxon formula C27H42O5 ChemAxon inchi InChI=1S/C27H42O5/c1-14-13-31-27(12-21(14)29)15(2)24-22(32-27)11-20-18-6-5-16-9-17(28)10-23(30)26(16,4)19(18)7-8-25(20,24)3/h5,14-15,17-24,28-30H,6-13H2,1-4H3 ChemAxon inchikey MHNJMWLWHYJLNF-UHFFFAOYSA-N ChemAxon polar_surface_area 79.15 ChemAxon refractivity 122.74 ChemAxon polarizability 52 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 5 ChemAxon donor_count 3 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 21954 Specdb::CMs 42249 Specdb::CMs 130971 Specdb::CMs 138705 Specdb::MsMs 56946 Specdb::MsMs 56947 Specdb::MsMs 56948 Specdb::MsMs 112482 Specdb::MsMs 112483 Specdb::MsMs 112484 Specdb::MsMs 2320301 Specdb::MsMs 2320302 Specdb::MsMs 2320303 Specdb::MsMs 2618705 Specdb::MsMs 2618706 Specdb::MsMs 2618707 HMDB30913 #<Reference:0x000055ce2d77fd70> Garden onion Type 1 specific Allium cepa 4679 Garden onion (var.) Type 1 specific Allium cepa var. cepa 4679 Green onion Type 1 Onion-family vegetables Unknown generic Red onion Type 1 Welsh onion Type 1 specific Allium fistulosum 35875