Record Information |
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Version | 5.0 |
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Status | Detected but not Quantified |
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Creation Date | 2021-09-11 19:46:04 UTC |
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Update Date | 2021-09-26 23:15:09 UTC |
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HMDB ID | HMDB0258335 |
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Secondary Accession Numbers | None |
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Metabolite Identification |
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Common Name | Skullcapflavone II |
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Description | scullcapflavone II, also known as neobaicalein, belongs to the class of organic compounds known as 8-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C8 atom of the flavonoid backbone. Thus, scullcapflavone II is considered to be a flavonoid. scullcapflavone II is a secondary metabolite. Secondary metabolites are metabolically or physiologically non-essential metabolites that may serve a role as defense or signalling molecules. In some cases they are simply molecules that arise from the incomplete metabolism of other secondary metabolites. Based on a literature review a significant number of articles have been published on scullcapflavone II. This compound has been identified in human blood as reported by (PMID: 31557052 ). Skullcapflavone ii is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Skullcapflavone II is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources. |
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Structure | COC1=CC=CC(O)=C1C1=CC(=O)C2=C(O)C(OC)=C(OC)C(OC)=C2O1 InChI=1S/C19H18O8/c1-23-11-7-5-6-9(20)13(11)12-8-10(21)14-15(22)17(24-2)19(26-4)18(25-3)16(14)27-12/h5-8,20,22H,1-4H3 |
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Synonyms | Value | Source |
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5,2'-Dihydroxy-6,7,8,6'-tetramethoxyflavone | ChEBI | 5-Hydroxy-2-(2-hydroxy-6-methoxy-phenyl)-6,7,8-trimethoxy-chromen-4-one | ChEBI | Neobaicalein | ChEBI | Skullcapflavone II | ChEBI | 5,2'-Dihydroxy-6,7,8,6'-tetramethoxy-flavone | MeSH |
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Chemical Formula | C19H18O8 |
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Average Molecular Weight | 374.345 |
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Monoisotopic Molecular Weight | 374.10016754 |
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IUPAC Name | 5-hydroxy-2-(2-hydroxy-6-methoxyphenyl)-6,7,8-trimethoxy-4H-chromen-4-one |
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Traditional Name | skullcapflavone II |
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CAS Registry Number | Not Available |
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SMILES | COC1=CC=CC(O)=C1C1=CC(=O)C2=C(O)C(OC)=C(OC)C(OC)=C2O1 |
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InChI Identifier | InChI=1S/C19H18O8/c1-23-11-7-5-6-9(20)13(11)12-8-10(21)14-15(22)17(24-2)19(26-4)18(25-3)16(14)27-12/h5-8,20,22H,1-4H3 |
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InChI Key | GMQFOKBGMKVUQZ-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as 8-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C8 atom of the flavonoid backbone. |
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Kingdom | Organic compounds |
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Super Class | Phenylpropanoids and polyketides |
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Class | Flavonoids |
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Sub Class | O-methylated flavonoids |
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Direct Parent | 8-O-methylated flavonoids |
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Alternative Parents | |
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Substituents | - 2p-methoxyflavonoid-skeleton
- 6-methoxyflavonoid-skeleton
- 7-methoxyflavonoid-skeleton
- 8-methoxyflavonoid-skeleton
- 5-hydroxyflavonoid
- Flavone
- Hydroxyflavonoid
- Chromone
- Benzopyran
- Methoxyphenol
- 1-benzopyran
- Phenoxy compound
- Anisole
- Methoxybenzene
- Phenol ether
- Phenol
- 1-hydroxy-2-unsubstituted benzenoid
- Pyranone
- 1-hydroxy-4-unsubstituted benzenoid
- Alkyl aryl ether
- Benzenoid
- Pyran
- Monocyclic benzene moiety
- Vinylogous acid
- Heteroaromatic compound
- Organoheterocyclic compound
- Oxacycle
- Ether
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Aromatic heteropolycyclic compound
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Molecular Framework | Aromatic heteropolycyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | Not Available |
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Role | Not Available |
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Physical Properties |
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State | Not Available |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times UnderivatizedChromatographic Method | Retention Time | Reference |
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Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 7.31 minutes | 32390414 | Predicted by Siyang on May 30, 2022 | 13.9242 minutes | 33406817 | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 1.25 minutes | 32390414 | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2514.4 seconds | 40023050 | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 267.8 seconds | 40023050 | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 176.0 seconds | 40023050 | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 178.0 seconds | 40023050 | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 209.0 seconds | 40023050 | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 616.6 seconds | 40023050 | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 746.9 seconds | 40023050 | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 144.8 seconds | 40023050 | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1124.2 seconds | 40023050 | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 518.9 seconds | 40023050 | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 1615.2 seconds | 40023050 | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 381.2 seconds | 40023050 | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 506.8 seconds | 40023050 | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 381.1 seconds | 40023050 | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 293.4 seconds | 40023050 | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 51.5 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (Non-derivatized) - 70eV, Positive | splash10-0a4m-0119000000-c6e67dd8312c40e83fd1 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TBDMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TBDMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Skullcapflavone II GC-MS (TBDMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 20V, Negative-QTOF | splash10-0006-0009000000-d14322b0ce1bd08c3677 | 2021-09-20 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 40V, Negative-QTOF | splash10-0ufr-1963000000-bcd39ef633aedeb88006 | 2021-09-20 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 20V, Positive-QTOF | splash10-004i-0009000000-60444ccbb71b9a8f528b | 2021-09-20 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 10V, Positive-QTOF | splash10-004i-0009000000-b504d75b71da83e5dc77 | 2021-09-20 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 40V, Positive-QTOF | splash10-0002-0914000000-5b4b4905312c25431cde | 2021-09-20 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Skullcapflavone II 10V, Negative-QTOF | splash10-00di-0009000000-5cc94ef3c20dd1dd4972 | 2021-09-20 | HMDB team, MONA | View Spectrum |
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