| dbo:abstract |
2,3,5,7-Tetraahydroxy-1,4-naphthalenedione, also called 2,3,5,7-tetrahydroxynaphthoquinone or spinochrome B, is an organic compound with formula C10H6O4, formally derived from 1,4-naphthoquinone through the replacement of four hydrogen atoms by hydroxyl (OH) groups. Spinochrome B occurs naturally as pigment in the shell and spines of sea urchins such as the Japanese dull red species aka-uni (Pseudocentrotus depressus), the greenish-black murasaki-uni, and the brown bafun-uni (Strongylocentrotus pulcherrimus). It is soluble in methanol and crystallizes as bright red needles that sublime above 200 °C. The compound gives a greenish yellow solution when treated with sodium hydroxide, a green solution with ferric chloride, and a green precipitate with lead acetate. It forms a fourfold acetate ester, C10H2O2(CH3COO)4, that crystallizes from methanol as yellow needles that melt at 157 °C. (en) |
| dbo:iupacName |
2,3,5,7-Tetrahydroxynaphthalene-1,4-dione (en) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Spinochrome_B.svg?width=300 |
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| dbo:wikiPageWikiLink |
dbr:Hydrogen dbr:Pseudocentrotus_depressus dbr:Lead_acetate dbc:1,4-Naphthoquinones dbc:3-Hydroxypropenals_within_hydroxyquinones dbc:Resorcinols dbr:Ester dbr:Organic_compound dbr:Pigment dbr:Sublimation_(phase_transition) dbr:2,3,5,6,8-Pentahydroxy-1,4-naphthalenedione dbr:Acetate dbc:Catechols dbc:Hydroxynaphthoquinones dbc:Tetrols dbr:Sodium_hydroxide dbr:Methanol dbr:Hydroxyl dbr:Mollusc_shell dbr:Naphthoquinone dbr:Strongylocentrotus_pulcherrimus dbr:2,3,5,6,7,8-Hexahydroxy-1,4-naphthalenedione dbr:Iron_(III)_chloride dbr:Heliocidaris_crassispina |
| dbp:imagefile |
Spinochrome B.svg (en) Spinochrome-B-3D-balls.png (en) |
| dbp:imagename |
Ball-and-stick model (en) Skeletal formula (en) |
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170 (xsd:integer) |
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| dcterms:subject |
dbc:1,4-Naphthoquinones dbc:3-Hydroxypropenals_within_hydroxyquinones dbc:Resorcinols dbc:Catechols dbc:Hydroxynaphthoquinones dbc:Tetrols |
| gold:hypernym |
dbr:Compound |
| rdf:type |
owl:Thing dul:ChemicalObject dbo:ChemicalSubstance wikidata:Q11173 yago:WikicatMolecularFormulas yago:Abstraction100002137 yago:Chemical114806838 yago:Communication100033020 yago:Compound114818238 yago:Formula106816935 yago:Material114580897 yago:Matter100020827 yago:Message106598915 yago:MolecularFormula106817173 yago:OrganicCompound114727670 yago:Part113809207 yago:Phenol114989545 yago:PhysicalEntity100001930 yago:Relation100031921 dbo:ChemicalCompound yago:Resorcinol115004715 yago:Statement106722453 yago:Substance100019613 yago:WikicatResorcinols umbel-rc:ChemicalSubstanceType |
| rdfs:comment |
2,3,5,7-Tetraahydroxy-1,4-naphthalenedione, also called 2,3,5,7-tetrahydroxynaphthoquinone or spinochrome B, is an organic compound with formula C10H6O4, formally derived from 1,4-naphthoquinone through the replacement of four hydrogen atoms by hydroxyl (OH) groups. The compound gives a greenish yellow solution when treated with sodium hydroxide, a green solution with ferric chloride, and a green precipitate with lead acetate. It forms a fourfold acetate ester, C10H2O2(CH3COO)4, that crystallizes from methanol as yellow needles that melt at 157 °C. (en) |
| rdfs:label |
2,3,5,7-Tetrahydroxy-1,4-naphthalenedione (en) |
| owl:sameAs |
freebase:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione yago-res:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione wikidata:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione http://azb.dbpedia.org/resource/تترا_هیدروکسی-۱و۴-نقتالندیون-۲و۳و۵و۷ dbpedia-fa:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione dbpedia-sh:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione dbpedia-sr:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione https://global.dbpedia.org/id/4Gctn |
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wikipedia-en:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione?oldid=1075848012&ns=0 |
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wiki-commons:Special:FilePath/Spinochrome-B-3D-balls.png wiki-commons:Special:FilePath/Spinochrome_B.svg |
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| is dbo:wikiPageWikiLink of |
dbr:Spinochrome_B dbr:C10H6O6 dbr:2,3,5,7-tetrahydroxy-1,4-naphthalenedione dbr:Naphthoquinone dbr:2,3,5,7-Tetrahydroxy-1,4-naphthoquinone |
| is foaf:primaryTopic of |
wikipedia-en:2,3,5,7-Tetrahydroxy-1,4-naphthalenedione |
