NP-MRD: Showing NP-Card for 8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one (NP0192395)

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Record Information

Version

2.0

Created at

2022-09-04 09:36:25 UTC

Updated at

2022-09-04 09:36:25 UTC

NP-MRD ID

NP0192395

Secondary Accession Numbers

None

Natural Product Identification

Common Name

8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one

Description

Murracarpin belongs to the class of organic compounds known as coumarins and derivatives. These are polycyclic aromatic compounds containing a 1-benzopyran moiety with a ketone group at the C2 carbon atom (1-benzopyran-2-one). 8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one is found in Murraya paniculata. 8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one was first documented in 2010 (PMID: 20738224). Based on a literature review very few articles have been published on Murracarpin (PMID: 24694618).

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 39 40  0  0  0  0  0  0  0  0999 V2000
    3.1236   -0.9052   -1.2253 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6822    0.2876   -0.8556 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.3542    1.4498   -1.5726 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.7317    0.6413    0.1362 C   0  0  1  0  0  0  0  0  0  0  0  0
    1.0610    1.8625   -0.2156 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7964   -0.2250    0.8578 C   0  0  1  0  0  0  0  0  0  0  0  0
    0.4961    0.3296    2.1166 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7118   -0.6279    3.1170 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.5292   -0.2572    0.1364 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7618   -1.0447   -0.9439 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.2439   -1.7635   -1.4922 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.2179   -2.6268   -2.5710 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0647   -1.1267   -1.4976 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0995   -0.4130   -0.9455 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.8701    0.3865    0.1569 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.8918    1.1206    0.7287 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.6153    1.9088    1.8149 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.3072    1.9154    2.2814 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0605    2.6411    3.2869 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3573    1.2221    1.7362 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5980    0.4553    0.6818 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.7628   -1.7968   -0.7517 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.8476   -1.0490   -2.0129 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.6103    1.9326   -2.2168 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.6150    2.2015   -0.7826 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.2762    1.1489   -2.0563 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.4579    1.1053    1.0039 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.7300    2.5480   -0.2913 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.1529   -1.2863    0.9974 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.4603   -0.1604    4.0897 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0106   -1.4525    2.9689 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.7478   -0.9707    3.1958 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.1186   -2.5198   -3.2414 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6606   -2.5479   -3.2374 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.2529   -3.7127   -2.2476 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2328   -1.7705   -2.3469 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.1152   -0.4464   -1.3367 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.8843    1.0387    0.2716 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.3923    2.5075    2.2626 H   0  0  0  0  0  0  0  0  0  0  0  0
  8  7  1  0
  7  6  1  0
  6  4  1  0
  4  5  1  0
  4  2  1  0
  2  3  1  0
  2  1  2  3
  6  9  1  0
  9 21  2  0
 21 20  1  0
 20 18  1  0
 18 19  2  0
 18 17  1  0
 17 16  2  0
 16 15  1  0
 15 14  2  0
 14 13  1  0
 13 10  2  0
 10 11  1  0
 11 12  1  0
 10  9  1  0
 15 21  1  0
  8 30  1  0
  8 31  1  0
  8 32  1  0
  6 29  1  1
  4 27  1  1
  5 28  1  0
  3 24  1  0
  3 25  1  0
  3 26  1  0
  1 22  1  0
  1 23  1  0
 17 39  1  0
 16 38  1  0
 14 37  1  0
 13 36  1  0
 12 33  1  0
 12 34  1  0
 12 35  1  0
M  END


  Mrv1652309042211362D          

 21 22  0  0  1  0            999 V2000
    2.8579   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -0.4125    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0
    2.8579    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868    0.0000    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0
    5.0013   -0.4125    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.8250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724    2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868    2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013    2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.7158    2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.4302    2.0625    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.4302    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.1447    0.8250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.7158    0.8250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  2  4  1  0  0  0  0
  4  5  1  1  0  0  0
  4  6  1  0  0  0  0
  6  7  1  6  0  0  0
  7  8  1  0  0  0  0
  6  9  1  0  0  0  0
  9 10  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  0  0  0  0
 10 13  2  0  0  0  0
 13 14  1  0  0  0  0
 14 15  2  0  0  0  0
 15 16  1  0  0  0  0
 16 17  2  0  0  0  0
 17 18  1  0  0  0  0
 18 19  2  0  0  0  0
 18 20  1  0  0  0  0
 20 21  1  0  0  0  0
  9 21  2  0  0  0  0
 15 21  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0192395

> <DATABASE_NAME>
NP-MRD

> <SMILES>
CO[C@H]([C@H](O)C(C)=C)C1=C2OC(=O)C=CC2=CC=C1OC

> <INCHI_IDENTIFIER>
InChI=1S/C16H18O5/c1-9(2)14(18)16(20-4)13-11(19-3)7-5-10-6-8-12(17)21-15(10)13/h5-8,14,16,18H,1H2,2-4H3/t14-,16+/m1/s1

> <INCHI_KEY>
DBPWCIPDCMVUFT-ZBFHGGJFSA-N

> <FORMULA>
C16H18O5

> <MOLECULAR_WEIGHT>
290.315

> <EXACT_MASS>
290.11542368

> <JCHEM_ACCEPTOR_COUNT>
4

> <JCHEM_ATOM_COUNT>
39

> <JCHEM_AVERAGE_POLARIZABILITY>
29.413039257592132

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
1

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
8-[(1S,2R)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxy-2H-chromen-2-one

> <JCHEM_LOGP>
1.9055083089999996

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
2

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA_STRONGEST_ACIDIC>
13.424437885971319

> <JCHEM_PKA_STRONGEST_BASIC>
-3.487950868676145

> <JCHEM_POLAR_SURFACE_AREA>
64.99

> <JCHEM_REFRACTIVITY>
78.6563

> <JCHEM_ROTATABLE_BOND_COUNT>
5

> <JCHEM_RULE_OF_FIVE>
1

> <JCHEM_TRADITIONAL_IUPAC>
8-[(1S,2R)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 04-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   04-SEP-22         0                                  
HETATM    1  C   UNK     0       5.335  -3.080   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       6.668  -2.310   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       8.002  -3.080   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       6.668  -0.770   0.000  0.00  0.00           C+0
HETATM    5  O   UNK     0       5.335   0.000   0.000  0.00  0.00           O+0
HETATM    6  C   UNK     0       8.002   0.000   0.000  0.00  0.00           C+0
HETATM    7  O   UNK     0       9.336  -0.770   0.000  0.00  0.00           O+0
HETATM    8  C   UNK     0       9.336  -2.310   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0       8.002   1.540   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0       6.668   2.310   0.000  0.00  0.00           C+0
HETATM   11  O   UNK     0       5.335   1.540   0.000  0.00  0.00           O+0
HETATM   12  C   UNK     0       4.001   2.310   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       6.668   3.850   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0       8.002   4.620   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0       9.336   3.850   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0      10.669   4.620   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0      12.003   3.850   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0      12.003   2.310   0.000  0.00  0.00           C+0
HETATM   19  O   UNK     0      13.337   1.540   0.000  0.00  0.00           O+0
HETATM   20  O   UNK     0      10.669   1.540   0.000  0.00  0.00           O+0
HETATM   21  C   UNK     0       9.336   2.310   0.000  0.00  0.00           C+0
CONECT    1    2                                                            
CONECT    2    1    3    4                                                  
CONECT    3    2                                                            
CONECT    4    2    5    6                                                  
CONECT    5    4                                                            
CONECT    6    4    7    9                                                  
CONECT    7    6    8                                                       
CONECT    8    7                                                            
CONECT    9    6   10   21                                                  
CONECT   10    9   11   13                                                  
CONECT   11   10   12                                                       
CONECT   12   11                                                            
CONECT   13   10   14                                                       
CONECT   14   13   15                                                       
CONECT   15   14   16   21                                                  
CONECT   16   15   17                                                       
CONECT   17   16   18                                                       
CONECT   18   17   19   20                                                  
CONECT   19   18                                                            
CONECT   20   18   21                                                       
CONECT   21   20    9   15                                                  
MASTER        0    0    0    0    0    0    0    0   21    0   44    0
END

View in JSmol

Synonyms

Value	Source
2H-8-(2-Hydroxy-1-methoxy-3-methyl-3-buten-1-yl)-7-methoxy-1-benzopyran-2-one	MeSH

Chemical Formula

C₁₆H₁₈O₅

Average Mass

290.3150 Da

Monoisotopic Mass

290.11542 Da

IUPAC Name

8-[(1S,2R)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxy-2H-chromen-2-one

Traditional Name

8-[(1S,2R)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one

CAS Registry Number

Not Available

SMILES

CO[C@H]([C@H](O)C(C)=C)C1=C2OC(=O)C=CC2=CC=C1OC

InChI Identifier

InChI=1S/C16H18O5/c1-9(2)14(18)16(20-4)13-11(19-3)7-5-10-6-8-12(17)21-15(10)13/h5-8,14,16,18H,1H2,2-4H3/t14-,16+/m1/s1

InChI Key

DBPWCIPDCMVUFT-ZBFHGGJFSA-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
Murraya paniculata	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as coumarins and derivatives. These are polycyclic aromatic compounds containing a 1-benzopyran moiety with a ketone group at the C2 carbon atom (1-benzopyran-2-one).

Kingdom

Organic compounds

Super Class

Phenylpropanoids and polyketides

Class

Coumarins and derivatives

Sub Class

Not Available

Direct Parent

Coumarins and derivatives

Alternative Parents

Substituents

Coumarin
Benzopyran
1-benzopyran
Anisole
Phenol ether
Alkyl aryl ether
Pyranone
Pyran
Benzenoid
Heteroaromatic compound
Secondary alcohol
Lactone
Oxacycle
Ether
Dialkyl ether
Organoheterocyclic compound
Alcohol
Organooxygen compound
Hydrocarbon derivative
Organic oxide
Organic oxygen compound
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	1.91	ChemAxon
pKa (Strongest Acidic)	13.42	ChemAxon
pKa (Strongest Basic)	-3.5	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	4	ChemAxon
Hydrogen Donor Count	1	ChemAxon
Polar Surface Area	64.99 Å²	ChemAxon
Rotatable Bond Count	5	ChemAxon
Refractivity	78.66 m³·mol⁻¹	ChemAxon
Polarizability	29.41 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	Yes	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

C00019966

Chemspider ID

107562737

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

14102500

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

Cuong NM, Khanh PN, Duc HV, Huong TT, Tai BH, Binh NQ, Durante M, Fusi F: Vasorelaxing activity of two coumarins from Murraya paniculata leaves. Biol Pharm Bull. 2014;37(4):694-7. doi: 10.1248/bpb.b13-00905. [PubMed:24694618 ]
Wu L, Li P, Wang X, Zhuang Z, Farzaneh F, Xu R: Evaluation of anti-inflammatory and antinociceptive activities of Murraya exotica. Pharm Biol. 2010 Dec;48(12):1344-53. doi: 10.3109/13880201003793723. Epub 2010 Aug 26. [PubMed:20738224 ]
LOTUS database [Link]

Showing NP-Card for 8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one (NP0192395)

MOL for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

3D MOL for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

3D SDF for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

3D-SDF for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

PDB for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

3D PDB for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

SMILES for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

INCHI for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

Structure for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)

3D Structure for NP0192395 (8-[(1s,2r)-2-hydroxy-1-methoxy-3-methylbut-3-en-1-yl]-7-methoxychromen-2-one)