1.0 2010-04-08 22:10:09 UTC 2025-11-18 23:36:14 UTC FDB012396 Fonsecin Mycotoxin from a mutant of Aspergillus fonsecaeus also known as Aspergillus carbonarius. 2,3-Dihydro-2,5,8-trihydroxy-6-methoxy-2-methyl-4H-naphtho[2,3-b]pyran-4-one, 9CI Antibiotic TMC 256B1 O8-Demethylfonsecin B TMC 256B1 C15H14O6 290.2681 290.07903818 2,5,8-trihydroxy-6-methoxy-2-methyl-2H,3H,4H-naphtho[2,3-b]pyran-4-one 2,5,8-trihydroxy-6-methoxy-2-methyl-3H-naphtho[2,3-b]pyran-4-one 3748-39-8 COC1=C2C(O)=C3C(=O)CC(C)(O)OC3=CC2=CC(O)=C1 InChI=1S/C15H14O6/c1-15(19)6-9(17)13-11(21-15)4-7-3-8(16)5-10(20-2)12(7)14(13)18/h3-5,16,18-19H,6H2,1-2H3 FKCYENFBFZUSDP-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. Naphthopyranones Organic compounds Organoheterocyclic compounds Naphthopyrans Naphthopyranones Aromatic heteropolycyclic compounds 1-hydroxy-2-unsubstituted benzenoids 1-hydroxy-4-unsubstituted benzenoids Alkyl aryl ethers Anisoles Aryl alkyl ketones Benzochromones Hemiacetals Hydrocarbon derivatives Naphthols and derivatives Organic oxides Oxacyclic compounds Polyols Pyranones and derivatives Vinylogous acids 1-benzopyran 1-hydroxy-2-unsubstituted benzenoid 1-hydroxy-4-unsubstituted benzenoid 1-naphthol 2-naphthol Alkyl aryl ether Anisole Aromatic heteropolycyclic compound Aryl alkyl ketone Aryl ketone Benzenoid Benzochromone Benzopyran Chromane Chromone Ether Hemiacetal Hydrocarbon derivative Ketone Naphthalene Naphthopyranone Organic oxide Organic oxygen compound Organooxygen compound Oxacycle Polyol Pyran Pyranone Vinylogous acid naphtho-gamma-pyrone logp 1.60 ALOGPS logs -2.78 ALOGPS solubility 4.78e-01 g/l ALOGPS melting_point Mp 198° dec. logp 2.07 ChemAxon pka_strongest_acidic 8.68 ChemAxon pka_strongest_basic -4.2 ChemAxon iupac 2,5,8-trihydroxy-6-methoxy-2-methyl-2H,3H,4H-naphtho[2,3-b]pyran-4-one ChemAxon average_mass 290.2681 ChemAxon mono_mass 290.07903818 ChemAxon smiles COC1=C2C(O)=C3C(=O)CC(C)(O)OC3=CC2=CC(O)=C1 ChemAxon formula C15H14O6 ChemAxon inchi InChI=1S/C15H14O6/c1-15(19)6-9(17)13-11(21-15)4-7-3-8(16)5-10(20-2)12(7)14(13)18/h3-5,16,18-19H,6H2,1-2H3 ChemAxon inchikey FKCYENFBFZUSDP-UHFFFAOYSA-N ChemAxon polar_surface_area 96.22 ChemAxon refractivity 73.99 ChemAxon polarizability 28.56 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 6 ChemAxon donor_count 3 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 15788 Specdb::CMs 43723 Specdb::CMs 151864 Specdb::MsMs 7763 Specdb::MsMs 7764 Specdb::MsMs 7765 Specdb::MsMs 14435 Specdb::MsMs 14436 Specdb::MsMs 14437 Specdb::MsMs 374635 Specdb::MsMs 451260 Specdb::MsMs 452140 Specdb::MsMs 452141 Specdb::MsMs 3051830 Specdb::MsMs 3051831 Specdb::MsMs 3051832 Specdb::MsMs 3114689 Specdb::MsMs 3114690 Specdb::MsMs 3114691 HMDB34124 #<Reference:0x000055ce332fa2e0>