1.02010-04-08 22:09:58 UTC2018-05-28 23:33:31 UTCFDB012050Fonsecin BMycotoxin from a mutant of Aspergillus fonsecaeus also known as Aspergillus carbonarius.Antibiotic TMC 256B2Fonsecin BFonsecin monomethyl etherTMC 256B2C16H16O6304.2946304.0946882442,5-dihydroxy-6,8-dimethoxy-2-methyl-2H,3H,4H-naphtho[2,3-b]pyran-4-one2,5-dihydroxy-6,8-dimethoxy-2-methyl-3H-naphtho[2,3-b]pyran-4-one1856-95-7COC1=CC(OC)=C2C(O)=C3C(=O)CC(C)(O)OC3=CC2=C1InChI=1S/C16H16O6/c1-16(19)7-10(17)14-12(22-16)5-8-4-9(20-2)6-11(21-3)13(8)15(14)18/h4-6,18-19H,7H2,1-3H3ZYTKFYQKQVYVMW-UHFFFAOYSA-N belongs to the class of organic compounds known as naphthopyranones. Naphthopyranones are compounds containing a naphthopyran skeleton where a ring carbon bears a carboxylic acid group. Naphthtopyran is made up of the pyran ring fused to a naphthalene ring system.NaphthopyranonesOrganic compoundsOrganoheterocyclic compoundsNaphthopyransNaphthopyranonesAromatic heteropolycyclic compounds1-hydroxy-4-unsubstituted benzenoidsAlkyl aryl ethersAnisolesAryl alkyl ketonesBenzochromonesHemiacetalsHydrocarbon derivativesNaphthols and derivativesOrganic oxidesOxacyclic compoundsPyranones and derivativesVinylogous acids1-benzopyran1-hydroxy-4-unsubstituted benzenoid1-naphtholAlkyl aryl etherAnisoleAromatic heteropolycyclic compoundAryl alkyl ketoneAryl ketoneBenzenoidBenzochromoneBenzopyranChromaneChromoneEtherHemiacetalHydrocarbon derivativeKetoneNaphthaleneNaphthopyranoneOrganic oxideOrganic oxygen compoundOrganooxygen compoundOxacyclePyranPyranoneVinylogous acidlogp1.47logs-3.03solubility2.87e-01 g/lmelting_pointMp 176°logp2.22pka_strongest_acidic9.29pka_strongest_basic-4.2iupac2,5-dihydroxy-6,8-dimethoxy-2-methyl-2H,3H,4H-naphtho[2,3-b]pyran-4-oneaverage_mass304.2946mono_mass304.094688244smilesCOC1=CC(OC)=C2C(O)=C3C(=O)CC(C)(O)OC3=CC2=C1formulaC16H16O6inchiInChI=1S/C16H16O6/c1-16(19)7-10(17)14-12(22-16)5-8-4-9(20-2)6-11(21-3)13(8)15(14)18/h4-6,18-19H,7H2,1-3H3inchikeyZYTKFYQKQVYVMW-UHFFFAOYSA-Npolar_surface_area85.22refractivity78.47polarizability30.66rotatable_bond_count2acceptor_count6donor_count2physiological_charge0formal_charge0Specdb::CMs9468Specdb::CMs43549Specdb::CMs130333Specdb::CMs138067Specdb::MsMs58617Specdb::MsMs58618Specdb::MsMs58619Specdb::MsMs114588Specdb::MsMs114589Specdb::MsMs114590Specdb::MsMs2815354Specdb::MsMs2815355Specdb::MsMs2815356Specdb::MsMs2893397Specdb::MsMs2893398Specdb::MsMs2893399HMDB33866#<Reference:0x0000555674548d08>