1.02010-04-08 22:06:37 UTC2019-11-26 03:00:28 UTCFDB005284Cucurbitacin ACucurbitacin a is a member of the class of compounds known as cucurbitacins. Cucurbitacins are polycyclic compounds containing the tetracyclic cucurbitane nucleus skeleton, 19-(10->9b)-abeo-10alanost-5-ene (also known as 9b-methyl-19-nor lanosta-5-ene), with a variety of oxygenation functionalities at different positions. Cucurbitacin a is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Cucurbitacin a can be found in cucumber, which makes cucurbitacin a a potential biomarker for the consumption of this food product. C32H46O9574.7022574.31418307(3E)-6-[4,13-dihydroxy-1-(hydroxymethyl)-6,6,11,15-tetramethyl-5,17-dioxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl acetate(3E)-6-[4,13-dihydroxy-1-(hydroxymethyl)-6,6,11,15-tetramethyl-5,17-dioxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl acetateCC(=O)OC(C)(C)\C=C\C(=O)C(C)(O)C1C(O)CC2(C)C3CC=C4C(CC(O)C(=O)C4(C)C)C3(CO)C(=O)CC12CInChI=1S/C32H46O9/c1-17(34)41-27(2,3)12-11-23(37)31(8,40)25-21(36)14-29(6)22-10-9-18-19(13-20(35)26(39)28(18,4)5)32(22,16-33)24(38)15-30(25,29)7/h9,11-12,19-22,25,33,35-36,40H,10,13-16H2,1-8H3/b12-11+IHTCCHVMPGDDSL-VAWYXSNFSA-Nlogp2.81logs-4.51solubility1.79e-02 g/llogp1.85pka_strongest_acidic12.8pka_strongest_basic-2.8iupac(3E)-6-[4,13-dihydroxy-1-(hydroxymethyl)-6,6,11,15-tetramethyl-5,17-dioxotetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-14-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl acetateaverage_mass574.7022mono_mass574.31418307smilesCC(=O)OC(C)(C)\C=C\C(=O)C(C)(O)C1C(O)CC2(C)C3CC=C4C(CC(O)C(=O)C4(C)C)C3(CO)C(=O)CC12CformulaC32H46O9inchiInChI=1S/C32H46O9/c1-17(34)41-27(2,3)12-11-23(37)31(8,40)25-21(36)14-29(6)22-10-9-18-19(13-20(35)26(39)28(18,4)5)32(22,16-33)24(38)15-30(25,29)7/h9,11-12,19-22,25,33,35-36,40H,10,13-16H2,1-8H3/b12-11+inchikeyIHTCCHVMPGDDSL-VAWYXSNFSA-Npolar_surface_area158.43refractivity152.82polarizability62.05rotatable_bond_count7acceptor_count8donor_count4physiological_charge0formal_charge0Specdb::MsMs85536Specdb::MsMs85537Specdb::MsMs85538Specdb::MsMs147651Specdb::MsMs147652Specdb::MsMs147653Specdb::MsMs3601610Specdb::MsMs3601611Specdb::MsMs3601612Specdb::MsMs3601613Specdb::MsMs3601614Specdb::MsMs3601615CucumberType 1specificCucumis sativus3659cytotoxic859A role played by the molecular entity or part thereof which causes the development of a pathological process.