NP-MRD: Showing NP-Card for 2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one (NP0292288)

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Record Information

Version

2.0

Created at

2022-09-09 23:44:58 UTC

Updated at

2022-09-09 23:44:58 UTC

NP-MRD ID

NP0292288

Secondary Accession Numbers

None

Natural Product Identification

Common Name

2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one

Description

Mesuferrol B belongs to the class of organic compounds known as xanthones. These are polycyclic aromatic compounds containing a xanthene moiety conjugated to a ketone group at carbon 9. Xanthene is a tricyclic compound made up of two benzene rings linearly fused to each other through a pyran ring. 2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one is found in Mesua ferrea. Based on a literature review very few articles have been published on Mesuferrol B.

Structure

MOL 3D MOL SDF PDB SMILES InChI


  Mrv1652309102201442D          

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M  END

     RDKit          3D

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M  END


  Mrv1652309102201442D          

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    4.8811    4.7337    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.8811    5.5587    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.1666    5.9712    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.5956    4.3212    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.5956    3.4962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.8811    3.0837    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.1666    3.4962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4521    3.0837    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4521    2.2587    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.7377    3.4962    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.0232    3.0837    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.0232    2.2587    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.4101    1.2142    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.1279    0.4390    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  2  0  0  0  0
  5  6  1  0  0  0  0
  6  7  2  0  0  0  0
  6  8  1  0  0  0  0
  8  9  2  0  0  0  0
  9 10  1  0  0  0  0
  9 11  1  0  0  0  0
 11 12  2  0  0  0  0
 12 13  1  0  0  0  0
 12 14  1  0  0  0  0
 14 15  2  0  0  0  0
  8 15  1  0  0  0  0
 15 16  1  0  0  0  0
 16 17  1  0  0  0  0
  5 17  1  0  0  0  0
 17 18  2  0  0  0  0
 18 19  1  0  0  0  0
  3 19  2  0  0  0  0
 19 20  1  0  0  0  0
 20 21  1  0  0  0  0
 21 22  1  0  0  0  0
 21 23  1  0  0  0  0
 23 24  2  0  0  0  0
 24 25  1  0  0  0  0
 25 26  2  0  0  0  0
 26 27  1  0  0  0  0
 26 28  1  0  0  0  0
 28 29  2  0  0  0  0
 29 30  1  0  0  0  0
 30 31  1  0  0  0  0
 31 32  2  0  0  0  0
 32 33  1  0  0  0  0
 33 34  1  0  0  0  0
 32 35  1  0  0  0  0
 35 36  2  0  0  0  0
 36 37  1  0  0  0  0
 37 38  2  0  0  0  0
 31 38  1  0  0  0  0
 38 39  1  0  0  0  0
 39 40  2  0  0  0  0
 39 41  1  0  0  0  0
 29 41  1  0  0  0  0
 41 42  2  0  0  0  0
 25 42  1  0  0  0  0
 42 43  1  0  0  0  0
 21 44  1  0  0  0  0
 44 45  1  0  0  0  0
 18 45  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0292288

> <DATABASE_NAME>
NP-MRD

> <SMILES>
COC1=C2OC3=CC(O)=C(\C=C\C4(C)COC5=C6OC7=CC(O)=CC(O)=C7C(=O)C6=CC(OC)=C5O4)C(O)=C3C(=O)C2=CC=C1

> <INCHI_IDENTIFIER>
InChI=1S/C33H24O12/c1-33(8-7-15-18(35)12-22-25(26(15)37)27(38)16-5-4-6-20(40-2)29(16)43-22)13-42-32-30-17(11-23(41-3)31(32)45-33)28(39)24-19(36)9-14(34)10-21(24)44-30/h4-12,34-37H,13H2,1-3H3/b8-7+

> <INCHI_KEY>
WGDMAYIQPVHOTQ-BQYQJAHWSA-N

> <FORMULA>
C33H24O12

> <MOLECULAR_WEIGHT>
612.543

> <EXACT_MASS>
612.126776213

> <JCHEM_ACCEPTOR_COUNT>
10

> <JCHEM_ATOM_COUNT>
69

> <JCHEM_AVERAGE_POLARIZABILITY>
61.956087372054625

> <JCHEM_BIOAVAILABILITY>
0

> <JCHEM_DONOR_COUNT>
4

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
0

> <JCHEM_IUPAC>
2-[(E)-2-(1,3-dihydroxy-5-methoxy-9-oxo-9H-xanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3,10-dihydro-2H-1,4,5-trioxatetraphen-10-one

> <JCHEM_LOGP>
5.904295860999999

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
7

> <JCHEM_PHYSIOLOGICAL_CHARGE>
-1

> <JCHEM_PKA>
7.772212367978171

> <JCHEM_PKA_STRONGEST_ACIDIC>
7.192028557585929

> <JCHEM_PKA_STRONGEST_BASIC>
-3.472369996986441

> <JCHEM_POLAR_SURFACE_AREA>
170.44

> <JCHEM_REFRACTIVITY>
158.62160000000003

> <JCHEM_ROTATABLE_BOND_COUNT>
4

> <JCHEM_RULE_OF_FIVE>
0

> <JCHEM_TRADITIONAL_IUPAC>
2-[(E)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3H-1,4,5-trioxatetraphen-10-one

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 10-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   10-SEP-22         0                                  
HETATM    1  C   UNK     0      -4.247   4.091   0.000  0.00  0.00           C+0
HETATM    2  O   UNK     0      -4.774   2.644   0.000  0.00  0.00           O+0
HETATM    3  C   UNK     0      -3.784   1.464   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0      -4.311   0.017   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0      -3.321  -1.163   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0      -3.848  -2.610   0.000  0.00  0.00           C+0
HETATM    7  O   UNK     0      -5.364  -2.877   0.000  0.00  0.00           O+0
HETATM    8  C   UNK     0      -2.858  -3.789   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0      -3.385  -5.237   0.000  0.00  0.00           C+0
HETATM   10  O   UNK     0      -4.901  -5.504   0.000  0.00  0.00           O+0
HETATM   11  C   UNK     0      -2.395  -6.416   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0      -0.878  -6.149   0.000  0.00  0.00           C+0
HETATM   13  O   UNK     0       0.112  -7.329   0.000  0.00  0.00           O+0
HETATM   14  C   UNK     0      -0.351  -4.702   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0      -1.341  -3.522   0.000  0.00  0.00           C+0
HETATM   16  O   UNK     0      -0.815  -2.075   0.000  0.00  0.00           O+0
HETATM   17  C   UNK     0      -1.805  -0.895   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0      -1.278   0.552   0.000  0.00  0.00           C+0
HETATM   19  C   UNK     0      -2.268   1.732   0.000  0.00  0.00           C+0
HETATM   20  O   UNK     0      -1.741   3.179   0.000  0.00  0.00           O+0
HETATM   21  C   UNK     0      -0.224   3.446   0.000  0.00  0.00           C+0
HETATM   22  C   UNK     0      -0.751   4.893   0.000  0.00  0.00           C+0
HETATM   23  C   UNK     0       1.109   4.216   0.000  0.00  0.00           C+0
HETATM   24  C   UNK     0       1.109   5.756   0.000  0.00  0.00           C+0
HETATM   25  C   UNK     0       2.443   6.526   0.000  0.00  0.00           C+0
HETATM   26  C   UNK     0       2.443   8.066   0.000  0.00  0.00           C+0
HETATM   27  O   UNK     0       1.109   8.836   0.000  0.00  0.00           O+0
HETATM   28  C   UNK     0       3.777   8.836   0.000  0.00  0.00           C+0
HETATM   29  C   UNK     0       5.110   8.066   0.000  0.00  0.00           C+0
HETATM   30  O   UNK     0       6.444   8.836   0.000  0.00  0.00           O+0
HETATM   31  C   UNK     0       7.778   8.066   0.000  0.00  0.00           C+0
HETATM   32  C   UNK     0       9.111   8.836   0.000  0.00  0.00           C+0
HETATM   33  O   UNK     0       9.111  10.376   0.000  0.00  0.00           O+0
HETATM   34  C   UNK     0       7.778  11.146   0.000  0.00  0.00           C+0
HETATM   35  C   UNK     0      10.445   8.066   0.000  0.00  0.00           C+0
HETATM   36  C   UNK     0      10.445   6.526   0.000  0.00  0.00           C+0
HETATM   37  C   UNK     0       9.111   5.756   0.000  0.00  0.00           C+0
HETATM   38  C   UNK     0       7.778   6.526   0.000  0.00  0.00           C+0
HETATM   39  C   UNK     0       6.444   5.756   0.000  0.00  0.00           C+0
HETATM   40  O   UNK     0       6.444   4.216   0.000  0.00  0.00           O+0
HETATM   41  C   UNK     0       5.110   6.526   0.000  0.00  0.00           C+0
HETATM   42  C   UNK     0       3.777   5.756   0.000  0.00  0.00           C+0
HETATM   43  O   UNK     0       3.777   4.216   0.000  0.00  0.00           O+0
HETATM   44  C   UNK     0       0.766   2.267   0.000  0.00  0.00           C+0
HETATM   45  O   UNK     0       0.239   0.819   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3                                                       
CONECT    3    2    4   19                                                  
CONECT    4    3    5                                                       
CONECT    5    4    6   17                                                  
CONECT    6    5    7    8                                                  
CONECT    7    6                                                            
CONECT    8    6    9   15                                                  
CONECT    9    8   10   11                                                  
CONECT   10    9                                                            
CONECT   11    9   12                                                       
CONECT   12   11   13   14                                                  
CONECT   13   12                                                            
CONECT   14   12   15                                                       
CONECT   15   14    8   16                                                  
CONECT   16   15   17                                                       
CONECT   17   16    5   18                                                  
CONECT   18   17   19   45                                                  
CONECT   19   18    3   20                                                  
CONECT   20   19   21                                                       
CONECT   21   20   22   23   44                                             
CONECT   22   21                                                            
CONECT   23   21   24                                                       
CONECT   24   23   25                                                       
CONECT   25   24   26   42                                                  
CONECT   26   25   27   28                                                  
CONECT   27   26                                                            
CONECT   28   26   29                                                       
CONECT   29   28   30   41                                                  
CONECT   30   29   31                                                       
CONECT   31   30   32   38                                                  
CONECT   32   31   33   35                                                  
CONECT   33   32   34                                                       
CONECT   34   33                                                            
CONECT   35   32   36                                                       
CONECT   36   35   37                                                       
CONECT   37   36   38                                                       
CONECT   38   37   31   39                                                  
CONECT   39   38   40   41                                                  
CONECT   40   39                                                            
CONECT   41   39   29   42                                                  
CONECT   42   41   25   43                                                  
CONECT   43   42                                                            
CONECT   44   21   45                                                       
CONECT   45   44   18                                                       
MASTER        0    0    0    0    0    0    0    0   45    0  102    0
END

View in JSmol

Synonyms

Not Available

Chemical Formula

C₃₃H₂₄O₁₂

Average Mass

612.5430 Da

Monoisotopic Mass

612.12678 Da

IUPAC Name

2-[(E)-2-(1,3-dihydroxy-5-methoxy-9-oxo-9H-xanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3,10-dihydro-2H-1,4,5-trioxatetraphen-10-one

Traditional Name

2-[(E)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3H-1,4,5-trioxatetraphen-10-one

CAS Registry Number

Not Available

SMILES

COC1=C2OC3=CC(O)=C(\C=C\C4(C)COC5=C6OC7=CC(O)=CC(O)=C7C(=O)C6=CC(OC)=C5O4)C(O)=C3C(=O)C2=CC=C1

InChI Identifier

InChI=1S/C33H24O12/c1-33(8-7-15-18(35)12-22-25(26(15)37)27(38)16-5-4-6-20(40-2)29(16)43-22)13-42-32-30-17(11-23(41-3)31(32)45-33)28(39)24-19(36)9-14(34)10-21(24)44-30/h4-12,34-37H,13H2,1-3H3/b8-7+

InChI Key

WGDMAYIQPVHOTQ-BQYQJAHWSA-N

Experimental Spectra

Not Available

Predicted Spectra

Spectrum Type	Description	Depositor ID	Depositor Organization	Depositor	Deposition Date	View
1D NMR	¹³C NMR Spectrum (1D, 25 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 252 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 50 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 75 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 101 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 126 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 151 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 176 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 201 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 226 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum

Chemical Shift Submissions

Not Available

Species

Species of Origin

Species Name	Source	Reference
Mesua ferrea	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as xanthones. These are polycyclic aromatic compounds containing a xanthene moiety conjugated to a ketone group at carbon 9. Xanthene is a tricyclic compound made up of two benzene rings linearly fused to each other through a pyran ring.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Benzopyrans

Sub Class

1-benzopyrans

Direct Parent

Xanthones

Alternative Parents

Substituents

Xanthone
Chromone
Benzo-1,4-dioxane
Benzodioxane
Anisole
Styrene
Phenol ether
1-hydroxy-4-unsubstituted benzenoid
1-hydroxy-2-unsubstituted benzenoid
Alkyl aryl ether
Pyranone
Phenol
Para-dioxin
Benzenoid
Pyran
Heteroaromatic compound
Vinylogous acid
Ether
Oxacycle
Organic oxygen compound
Hydrocarbon derivative
Organooxygen compound
Organic oxide
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic compounds

External Descriptors

Not Available

Physical Properties

State

Not Available

Experimental Properties

Property	Value	Reference
Melting Point	Not Available	Not Available
Boiling Point	Not Available	Not Available
Water Solubility	Not Available	Not Available
LogP	Not Available	Not Available

Predicted Properties

Property	Value	Source
logP	5.9	ChemAxon
pKa (Strongest Acidic)	7.19	ChemAxon
pKa (Strongest Basic)	-3.5	ChemAxon
Physiological Charge	-1	ChemAxon
Hydrogen Acceptor Count	10	ChemAxon
Hydrogen Donor Count	4	ChemAxon
Polar Surface Area	170.44 Å²	ChemAxon
Rotatable Bond Count	4	ChemAxon
Refractivity	158.62 m³·mol⁻¹	ChemAxon
Polarizability	61.96 Å³	ChemAxon
Number of Rings	7	ChemAxon
Bioavailability	No	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

Not Available

Chemspider ID

Not Available

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

101995076

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for 2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one (NP0292288)

MOL for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

3D MOL for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

3D SDF for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

3D-SDF for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

PDB for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

3D PDB for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

SMILES for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

INCHI for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

Structure for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)

3D Structure for NP0292288 (2-[(1e)-2-(1,3-dihydroxy-5-methoxy-9-oxoxanthen-2-yl)ethenyl]-7,9-dihydroxy-12-methoxy-2-methyl-3h-1,4,5-trioxatetraphen-10-one)