NP-MRD: Showing NP-Card for (2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid (NP0269660)

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Record Information

Version

2.0

Created at

2022-09-08 15:13:44 UTC

Updated at

2022-09-08 15:13:44 UTC

NP-MRD ID

NP0269660

Secondary Accession Numbers

None

Natural Product Identification

Common Name

(2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid

Description

(2R)-2-[2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid belongs to the class of organic compounds known as o-methoxybenzoic acids and derivatives. These are benzoic acids in which the hydrogen atom at position 2 of the benzene ring is replaced by a methoxy group. (2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid is found in Sanguisorba minor. Based on a literature review very few articles have been published on (2R)-2-[2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid.

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 39 39  0  0  0  0  0  0  0  0999 V2000
    4.3595   -2.4317    0.6344 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.6342   -1.0506    0.3955 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5403   -0.2006    0.1501 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2490   -0.6780    0.1395 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.1505    0.1297   -0.0982 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1852   -0.4435   -0.0942 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2794    0.2413   -0.3084 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.6278   -0.3844   -0.2955 C   0  0  1  0  0  0  0  0  0  0  0  0
   -3.6142    0.4233    0.5146 C   0  0  0  0  0  0  0  0  0  0  0  0
   -4.9257   -0.2721    0.4723 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.0822   -1.3461   -0.1598 O   0  0  0  0  0  0  0  0  0  0  0  0
   -6.0261    0.2431    1.1319 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1303   -0.6037   -1.5655 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.2645    0.5433   -2.3061 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.5058   -1.7128    0.3879 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.8200   -2.7810   -0.1534 O   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0120   -1.7060    1.6922 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.3998    1.4630   -0.3301 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6936    1.9437   -0.3199 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.7839    1.1364   -0.0829 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.1373    1.6608   -0.0763 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.0984    0.8877    0.1442 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.3235    3.0094   -0.3160 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.8077   -2.8236   -0.2468 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.3238   -2.9465    0.7184 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.7520   -2.4791    1.5591 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.1055   -1.7334    0.3273 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2989   -1.5122    0.0983 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2319    1.3006   -0.5043 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.2869    0.4820    1.5701 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7437    1.4573    0.1234 H   0  0  0  0  0  0  0  0  0  0  0  0
   -6.5621   -0.2946    1.8008 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.6746    0.2469   -3.3037 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.9750    1.2795   -1.8954 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.3171    1.0736   -2.5057 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8924   -0.8543    2.2264 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.6014    2.1477   -0.5213 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.8446    3.0056   -0.5083 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.6507    3.5792    0.4612 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0
  2  3  1  0
  3  4  2  0
  4  5  1  0
  5  6  1  0
  6  7  2  0
  7  8  1  0
  8  9  1  0
  9 10  1  0
 10 12  1  0
 10 11  2  0
  8 13  1  6
 13 14  1  0
  8 15  1  0
 15 17  1  0
 15 16  2  0
  5 18  2  0
 18 19  1  0
 19 20  2  0
 20 21  1  0
 21 23  1  0
 21 22  2  0
 20  3  1  0
  1 24  1  0
  1 25  1  0
  1 26  1  0
  4 27  1  0
  6 28  1  0
  7 29  1  0
  9 30  1  0
  9 31  1  0
 12 32  1  0
 14 33  1  0
 14 34  1  0
 14 35  1  0
 17 36  1  0
 18 37  1  0
 19 38  1  0
 23 39  1  0
M  END


  Mrv1652309082217132D          

 23 23  0  0  1  0            999 V2000
    0.0000    2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145    2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -0.4125    0.0000 C   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
    2.8579   -1.6500    0.0000 C   0  0  1  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   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -0.8250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.2704   -0.9355    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579   -0.2211    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.4454   -2.3645    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579   -3.0789    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.6204   -2.3645    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7145    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4289    0.8250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7145    2.0625    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  2  0  0  0  0
  4  5  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  2  0  0  0  0
  8  7  1  6  0  0  0
  8  9  1  0  0  0  0
  9 10  1  0  0  0  0
 10 11  2  0  0  0  0
 10 12  1  0  0  0  0
  8 13  1  1  0  0  0
 13 14  1  0  0  0  0
  8 15  1  0  0  0  0
 15 16  2  0  0  0  0
 15 17  1  0  0  0  0
  5 18  2  0  0  0  0
 18 19  1  0  0  0  0
 19 20  2  0  0  0  0
  3 20  1  0  0  0  0
 20 21  1  0  0  0  0
 21 22  2  0  0  0  0
 21 23  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0269660

> <DATABASE_NAME>
NP-MRD

> <SMILES>
COC1=CC(\C=C\[C@@](CC(O)=O)(OC)C(O)=O)=CC=C1C(O)=O

> <INCHI_IDENTIFIER>
InChI=1S/C15H16O8/c1-22-11-7-9(3-4-10(11)13(18)19)5-6-15(23-2,14(20)21)8-12(16)17/h3-7H,8H2,1-2H3,(H,16,17)(H,18,19)(H,20,21)/b6-5+/t15-/m0/s1

> <INCHI_KEY>
SMWPODZFOYKZAS-NFAHFFEMSA-N

> <FORMULA>
C15H16O8

> <MOLECULAR_WEIGHT>
324.285

> <EXACT_MASS>
324.084517475

> <JCHEM_ACCEPTOR_COUNT>
8

> <JCHEM_ATOM_COUNT>
39

> <JCHEM_AVERAGE_POLARIZABILITY>
31.276748718293526

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
3

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
(2R)-2-[(E)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid

> <JCHEM_LOGP>
1.4397434399999995

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
1

> <JCHEM_PHYSIOLOGICAL_CHARGE>
-3

> <JCHEM_PKA>
4.1046896788774

> <JCHEM_PKA_STRONGEST_ACIDIC>
2.9653895085542783

> <JCHEM_PKA_STRONGEST_BASIC>
-4.158432768948673

> <JCHEM_POLAR_SURFACE_AREA>
130.36

> <JCHEM_REFRACTIVITY>
78.24170000000001

> <JCHEM_ROTATABLE_BOND_COUNT>
8

> <JCHEM_RULE_OF_FIVE>
1

> <JCHEM_TRADITIONAL_IUPAC>
(2R)-2-[(E)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 08-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   08-SEP-22         0                                  
HETATM    1  C   UNK     0       0.000   4.620   0.000  0.00  0.00           C+0
HETATM    2  O   UNK     0       1.334   3.850   0.000  0.00  0.00           O+0
HETATM    3  C   UNK     0       1.334   2.310   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       2.667   1.540   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       2.667  -0.000   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       4.001  -0.770   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       4.001  -2.310   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       5.335  -3.080   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0       6.668  -3.850   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0       8.002  -3.080   0.000  0.00  0.00           C+0
HETATM   11  O   UNK     0       8.002  -1.540   0.000  0.00  0.00           O+0
HETATM   12  O   UNK     0       9.336  -3.850   0.000  0.00  0.00           O+0
HETATM   13  O   UNK     0       6.105  -1.746   0.000  0.00  0.00           O+0
HETATM   14  C   UNK     0       5.335  -0.413   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0       4.565  -4.414   0.000  0.00  0.00           C+0
HETATM   16  O   UNK     0       5.335  -5.747   0.000  0.00  0.00           O+0
HETATM   17  O   UNK     0       3.025  -4.414   0.000  0.00  0.00           O+0
HETATM   18  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   19  C   UNK     0       0.000   0.000   0.000  0.00  0.00           C+0
HETATM   20  C   UNK     0       0.000   1.540   0.000  0.00  0.00           C+0
HETATM   21  C   UNK     0      -1.334   2.310   0.000  0.00  0.00           C+0
HETATM   22  O   UNK     0      -2.667   1.540   0.000  0.00  0.00           O+0
HETATM   23  O   UNK     0      -1.334   3.850   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3                                                       
CONECT    3    2    4   20                                                  
CONECT    4    3    5                                                       
CONECT    5    4    6   18                                                  
CONECT    6    5    7                                                       
CONECT    7    6    8                                                       
CONECT    8    7    9   13   15                                             
CONECT    9    8   10                                                       
CONECT   10    9   11   12                                                  
CONECT   11   10                                                            
CONECT   12   10                                                            
CONECT   13    8   14                                                       
CONECT   14   13                                                            
CONECT   15    8   16   17                                                  
CONECT   16   15                                                            
CONECT   17   15                                                            
CONECT   18    5   19                                                       
CONECT   19   18   20                                                       
CONECT   20   19    3   21                                                  
CONECT   21   20   22   23                                                  
CONECT   22   21                                                            
CONECT   23   21                                                            
MASTER        0    0    0    0    0    0    0    0   23    0   46    0
END

View in JSmol

Synonyms

Value	Source
(2R)-2-[2-(4-Carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioate	Generator

Chemical Formula

C₁₅H₁₆O₈

Average Mass

324.2850 Da

Monoisotopic Mass

324.08452 Da

IUPAC Name

(2R)-2-[(E)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid

Traditional Name

(2R)-2-[(E)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid

CAS Registry Number

Not Available

SMILES

COC1=CC(\C=C\[C@@](CC(O)=O)(OC)C(O)=O)=CC=C1C(O)=O

InChI Identifier

InChI=1S/C15H16O8/c1-22-11-7-9(3-4-10(11)13(18)19)5-6-15(23-2,14(20)21)8-12(16)17/h3-7H,8H2,1-2H3,(H,16,17)(H,18,19)(H,20,21)/b6-5+/t15-/m0/s1

InChI Key

SMWPODZFOYKZAS-NFAHFFEMSA-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
Sanguisorba minor	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as o-methoxybenzoic acids and derivatives. These are benzoic acids in which the hydrogen atom at position 2 of the benzene ring is replaced by a methoxy group.

Kingdom

Organic compounds

Super Class

Benzenoids

Class

Benzene and substituted derivatives

Sub Class

Benzoic acids and derivatives

Direct Parent

O-methoxybenzoic acids and derivatives

Alternative Parents

Substituents

O-methoxybenzoic acid or derivatives
Benzoic acid
Tricarboxylic acid or derivatives
Anisole
Phenoxy compound
Benzoyl
Phenol ether
Styrene
Methoxybenzene
Alkyl aryl ether
Ether
Dialkyl ether
Carboxylic acid
Carboxylic acid derivative
Organic oxygen compound
Organooxygen compound
Organic oxide
Carbonyl group
Hydrocarbon derivative
Aromatic homomonocyclic compound

Molecular Framework

Aromatic homomonocyclic 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	1.44	ChemAxon
pKa (Strongest Acidic)	2.97	ChemAxon
pKa (Strongest Basic)	-4.2	ChemAxon
Physiological Charge	-3	ChemAxon
Hydrogen Acceptor Count	8	ChemAxon
Hydrogen Donor Count	3	ChemAxon
Polar Surface Area	130.36 Å²	ChemAxon
Rotatable Bond Count	8	ChemAxon
Refractivity	78.24 m³·mol⁻¹	ChemAxon
Polarizability	31.28 Å³	ChemAxon
Number of Rings	1	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

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

163193569

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for (2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid (NP0269660)

MOL for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

3D MOL for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

3D SDF for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

3D-SDF for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

PDB for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

3D PDB for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

SMILES for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

INCHI for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

Structure for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)

3D Structure for NP0269660 ((2r)-2-[(1e)-2-(4-carboxy-3-methoxyphenyl)ethenyl]-2-methoxybutanedioic acid)