NP-MRD: Showing NP-Card for Erlangerin A (NP0024648)

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Record Information

Version

2.0

Created at

2021-06-19 16:58:16 UTC

Updated at

2021-06-29 23:49:06 UTC

NP-MRD ID

NP0024648

Secondary Accession Numbers

None

Natural Product Identification

Common Name

Erlangerin A

Provided By

JEOL Database JEOL Logo

Description

(3AR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-1H,3H,3aH,4H,9H,9aH-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate belongs to the class of organic compounds known as lignan lactones. These are lignans that contain a lactone moiety. They include 1-aryltetralin lactones, dibenzylbutyrolactone lignans, and podophyllotoxins, among others. Erlangerin A is found in Commiphora erlangeriana. Erlangerin A was first documented in 2002 (Dekebo, A., et al.). Based on a literature review very few articles have been published on (3aR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-1H,3H,3aH,4H,9H,9aH-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate.

Structure

MOL 3D MOL SDF 3D SDF PDB SMILES InChI


  Mrv1652306192118583D          

 66 70  0  0  0  0            999 V2000
    1.9657   -2.3363   -4.7327 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7234   -2.3018   -5.5647 C   0  0  0  0  0  0  0  0  0  0  0  0
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 37  8  1  0  0  0  0
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M  END

     RDKit          3D

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M  END


  Mrv1652306192118583D          

 66 70  0  0  0  0            999 V2000
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    0.7234   -2.3018   -5.5647 C   0  0  0  0  0  0  0  0  0  0  0  0
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M  END
> <DATABASE_ID>
NP0024648

> <DATABASE_NAME>
NP-MRD

> <SMILES>
[H]O[C@]12C(=O)OC([H])([H])[C@@]1(O[H])[C@]([H])(OC(=O)C(=C(\[H])C([H])([H])[H])\C([H])([H])[H])C1=C([H])C(OC([H])([H])[H])=C(OC([H])([H])[H])C(OC([H])([H])[H])=C1[C@@]2([H])C1=C([H])C([H])=C2OC([H])([H])OC2=C1[H]

> <INCHI_IDENTIFIER>
InChI=1S/C27H28O11/c1-6-13(2)24(28)38-23-15-10-18(32-3)21(33-4)22(34-5)19(15)20(27(31)25(29)35-11-26(23,27)30)14-7-8-16-17(9-14)37-12-36-16/h6-10,20,23,30-31H,11-12H2,1-5H3/b13-6-/t20-,23-,26-,27-/m1/s1

> <INCHI_KEY>
YZRDGLILUWSIQK-JKXSZHOXSA-N

> <FORMULA>
C27H28O11

> <MOLECULAR_WEIGHT>
528.51

> <EXACT_MASS>
528.163161722

> <JCHEM_ACCEPTOR_COUNT>
9

> <JCHEM_ATOM_COUNT>
66

> <JCHEM_AVERAGE_POLARIZABILITY>
52.51233067729477

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
2

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
0

> <JCHEM_IUPAC>
(3aR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-1H,3H,3aH,4H,9H,9aH-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate

> <ALOGPS_LOGP>
2.16

> <JCHEM_LOGP>
2.511083729000001

> <ALOGPS_LOGS>
-3.82

> <JCHEM_MDDR_LIKE_RULE>
1

> <JCHEM_NUMBER_OF_RINGS>
5

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA>
12.398948842095933

> <JCHEM_PKA_STRONGEST_ACIDIC>
10.735217369522484

> <JCHEM_PKA_STRONGEST_BASIC>
-4.271283171031328

> <JCHEM_POLAR_SURFACE_AREA>
139.21000000000004

> <JCHEM_REFRACTIVITY>
130.1457

> <JCHEM_ROTATABLE_BOND_COUNT>
7

> <JCHEM_RULE_OF_FIVE>
0

> <ALOGPS_SOLUBILITY>
7.97e-02 g/l

> <JCHEM_TRADITIONAL_IUPAC>
(3aR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-3H,4H,9H-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate

> <JCHEM_VEBER_RULE>
0

$$$$

     RDKit          3D

 66 70  0  0  0  0  0  0  0  0999 V2000
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 13 49  1  0
 13 50  1  0
 16 51  1  0
 16 52  1  0
 16 53  1  0
 19 54  1  0
 19 55  1  0
 19 56  1  0
 38 66  1  0
 32 63  1  0
 23 58  1  0
 24 59  1  0
 27 60  1  0
 29 61  1  0
 29 62  1  0
  4 43  1  0
  4 44  1  0
  4 45  1  0
  1 39  1  0
  1 40  1  0
  1 41  1  0
M  END

HEADER    PROTEIN                                 19-JUN-21   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   19-JUN-21         0                                  
HETATM    1  C   UNK     0       1.966  -2.336  -4.733  0.00  0.00           C+0
HETATM    2  C   UNK     0       0.723  -2.302  -5.565  0.00  0.00           C+0
HETATM    3  C   UNK     0      -0.561  -2.257  -5.156  0.00  0.00           C+0
HETATM    4  C   UNK     0      -1.694  -2.323  -6.142  0.00  0.00           C+0
HETATM    5  C   UNK     0      -1.017  -2.143  -3.741  0.00  0.00           C+0
HETATM    6  O   UNK     0      -2.111  -2.530  -3.357  0.00  0.00           O+0
HETATM    7  O   UNK     0      -0.128  -1.458  -2.986  0.00  0.00           O+0
HETATM    8  C   UNK     0      -0.519  -1.222  -1.617  0.00  0.00           C+0
HETATM    9  C   UNK     0       0.198   0.024  -1.099  0.00  0.00           C+0
HETATM   10  C   UNK     0       0.656   1.017  -1.990  0.00  0.00           C+0
HETATM   11  C   UNK     0       1.231   2.203  -1.525  0.00  0.00           C+0
HETATM   12  O   UNK     0       1.718   3.205  -2.323  0.00  0.00           O+0
HETATM   13  C   UNK     0       1.631   3.027  -3.730  0.00  0.00           C+0
HETATM   14  C   UNK     0       1.329   2.411  -0.142  0.00  0.00           C+0
HETATM   15  O   UNK     0       1.882   3.579   0.329  0.00  0.00           O+0
HETATM   16  C   UNK     0       3.285   3.401   0.526  0.00  0.00           C+0
HETATM   17  C   UNK     0       0.825   1.464   0.761  0.00  0.00           C+0
HETATM   18  O   UNK     0       0.889   1.649   2.120  0.00  0.00           O+0
HETATM   19  C   UNK     0       0.092   2.757   2.542  0.00  0.00           C+0
HETATM   20  C   UNK     0       0.292   0.251   0.293  0.00  0.00           C+0
HETATM   21  C   UNK     0      -0.199  -0.818   1.270  0.00  0.00           C+0
HETATM   22  C   UNK     0      -1.647  -0.630   1.731  0.00  0.00           C+0
HETATM   23  C   UNK     0      -2.027  -1.140   3.001  0.00  0.00           C+0
HETATM   24  C   UNK     0      -3.334  -1.014   3.486  0.00  0.00           C+0
HETATM   25  C   UNK     0      -4.249  -0.362   2.694  0.00  0.00           C+0
HETATM   26  C   UNK     0      -3.899   0.157   1.473  0.00  0.00           C+0
HETATM   27  C   UNK     0      -2.617   0.047   0.969  0.00  0.00           C+0
HETATM   28  O   UNK     0      -4.941   0.773   0.853  0.00  0.00           O+0
HETATM   29  C   UNK     0      -5.989   0.575   1.825  0.00  0.00           C+0
HETATM   30  O   UNK     0      -5.555  -0.141   2.999  0.00  0.00           O+0
HETATM   31  C   UNK     0       0.189  -2.199   0.686  0.00  0.00           C+0
HETATM   32  O   UNK     0       1.638  -2.338   0.723  0.00  0.00           O+0
HETATM   33  C   UNK     0      -0.410  -3.357   1.455  0.00  0.00           C+0
HETATM   34  O   UNK     0      -0.015  -3.732   2.551  0.00  0.00           O+0
HETATM   35  O   UNK     0      -1.431  -3.927   0.766  0.00  0.00           O+0
HETATM   36  C   UNK     0      -1.577  -3.270  -0.501  0.00  0.00           C+0
HETATM   37  C   UNK     0      -0.289  -2.482  -0.737  0.00  0.00           C+0
HETATM   38  O   UNK     0       0.673  -3.371  -1.364  0.00  0.00           O+0
HETATM   39  H   UNK     0       2.714  -2.967  -5.225  0.00  0.00           H+0
HETATM   40  H   UNK     0       1.804  -2.765  -3.742  0.00  0.00           H+0
HETATM   41  H   UNK     0       2.385  -1.331  -4.633  0.00  0.00           H+0
HETATM   42  H   UNK     0       0.916  -2.361  -6.636  0.00  0.00           H+0
HETATM   43  H   UNK     0      -1.340  -2.341  -7.178  0.00  0.00           H+0
HETATM   44  H   UNK     0      -2.290  -3.228  -5.983  0.00  0.00           H+0
HETATM   45  H   UNK     0      -2.347  -1.450  -6.034  0.00  0.00           H+0
HETATM   46  H   UNK     0      -1.580  -0.938  -1.607  0.00  0.00           H+0
HETATM   47  H   UNK     0       0.549   0.845  -3.057  0.00  0.00           H+0
HETATM   48  H   UNK     0       2.066   3.911  -4.206  0.00  0.00           H+0
HETATM   49  H   UNK     0       0.588   2.953  -4.055  0.00  0.00           H+0
HETATM   50  H   UNK     0       2.211   2.156  -4.055  0.00  0.00           H+0
HETATM   51  H   UNK     0       3.793   3.155  -0.413  0.00  0.00           H+0
HETATM   52  H   UNK     0       3.486   2.633   1.280  0.00  0.00           H+0
HETATM   53  H   UNK     0       3.693   4.348   0.892  0.00  0.00           H+0
HETATM   54  H   UNK     0       0.695   3.669   2.573  0.00  0.00           H+0
HETATM   55  H   UNK     0      -0.796   2.904   1.915  0.00  0.00           H+0
HETATM   56  H   UNK     0      -0.250   2.550   3.561  0.00  0.00           H+0
HETATM   57  H   UNK     0       0.415  -0.706   2.177  0.00  0.00           H+0
HETATM   58  H   UNK     0      -1.296  -1.642   3.635  0.00  0.00           H+0
HETATM   59  H   UNK     0      -3.615  -1.413   4.454  0.00  0.00           H+0
HETATM   60  H   UNK     0      -2.402   0.507   0.012  0.00  0.00           H+0
HETATM   61  H   UNK     0      -6.371   1.556   2.133  0.00  0.00           H+0
HETATM   62  H   UNK     0      -6.804   0.014   1.352  0.00  0.00           H+0
HETATM   63  H   UNK     0       1.877  -2.481   1.663  0.00  0.00           H+0
HETATM   64  H   UNK     0      -2.472  -2.644  -0.441  0.00  0.00           H+0
HETATM   65  H   UNK     0      -1.733  -4.045  -1.257  0.00  0.00           H+0
HETATM   66  H   UNK     0       1.549  -3.095  -1.016  0.00  0.00           H+0
CONECT    1    2   39   40   41                                             
CONECT    2    3   42    1                                                  
CONECT    3    5    4    2                                                  
CONECT    4    3   43   44   45                                             
CONECT    5    7    6    3                                                  
CONECT    6    5                                                            
CONECT    7    8    5                                                       
CONECT    8   37    7    9   46                                             
CONECT    9   10   20    8                                                  
CONECT   10    9   11   47                                                  
CONECT   11   10   12   14                                                  
CONECT   12   11   13                                                       
CONECT   13   12   48   49   50                                             
CONECT   14   17   11   15                                                  
CONECT   15   14   16                                                       
CONECT   16   15   51   52   53                                             
CONECT   17   14   20   18                                                  
CONECT   18   19   17                                                       
CONECT   19   18   54   55   56                                             
CONECT   20    9   17   21                                                  
CONECT   21   22   20   31   57                                             
CONECT   22   21   23   27                                                  
CONECT   23   22   24   58                                                  
CONECT   24   23   25   59                                                  
CONECT   25   24   26   30                                                  
CONECT   26   27   25   28                                                  
CONECT   27   26   22   60                                                  
CONECT   28   29   26                                                       
CONECT   29   30   28   61   62                                             
CONECT   30   25   29                                                       
CONECT   31   37   32   33   21                                             
CONECT   32   31   63                                                       
CONECT   33   34   31   35                                                  
CONECT   34   33                                                            
CONECT   35   33   36                                                       
CONECT   36   35   37   64   65                                             
CONECT   37    8   31   38   36                                             
CONECT   38   37   66                                                       
CONECT   39    1                                                            
CONECT   40    1                                                            
CONECT   41    1                                                            
CONECT   42    2                                                            
CONECT   43    4                                                            
CONECT   44    4                                                            
CONECT   45    4                                                            
CONECT   46    8                                                            
CONECT   47   10                                                            
CONECT   48   13                                                            
CONECT   49   13                                                            
CONECT   50   13                                                            
CONECT   51   16                                                            
CONECT   52   16                                                            
CONECT   53   16                                                            
CONECT   54   19                                                            
CONECT   55   19                                                            
CONECT   56   19                                                            
CONECT   57   21                                                            
CONECT   58   23                                                            
CONECT   59   24                                                            
CONECT   60   27                                                            
CONECT   61   29                                                            
CONECT   62   29                                                            
CONECT   63   32                                                            
CONECT   64   36                                                            
CONECT   65   36                                                            
CONECT   66   38                                                            
MASTER        0    0    0    0    0    0    0    0   66    0  140    0
END

RDKit          3D

66 70  0  0  0  0  0  0  0  0999 V2000
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M  END

View in JSmol

Synonyms

Value	Source
(3AR,4R,9R,9as)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-1H,3H,3ah,4H,9H,9ah-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoic acid	Generator

Chemical Formula

C₂₇H₂₈O₁₁

Average Mass

528.5100 Da

Monoisotopic Mass

528.16316 Da

IUPAC Name

(3aR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-1H,3H,3aH,4H,9H,9aH-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate

Traditional Name

(3aR,4R,9R,9aS)-9-(2H-1,3-benzodioxol-5-yl)-3a,9a-dihydroxy-6,7,8-trimethoxy-1-oxo-3H,4H,9H-naphtho[2,3-c]furan-4-yl (2Z)-2-methylbut-2-enoate

CAS Registry Number

Not Available

SMILES

[H]O[C@]12C(=O)OC([H])([H])[C@@]1(O[H])[C@]([H])(OC(=O)C(=C(\[H])C([H])([H])[H])\C([H])([H])[H])C1=C([H])C(OC([H])([H])[H])=C(OC([H])([H])[H])C(OC([H])([H])[H])=C1[C@@]2([H])C1=C([H])C([H])=C2OC([H])([H])OC2=C1[H]

InChI Identifier

InChI=1S/C27H28O11/c1-6-13(2)24(28)38-23-15-10-18(32-3)21(33-4)22(34-5)19(15)20(27(31)25(29)35-11-26(23,27)30)14-7-8-16-17(9-14)37-12-36-16/h6-10,20,23,30-31H,11-12H2,1-5H3/b13-6-/t20-,23-,26-,27-/m1/s1

InChI Key

YZRDGLILUWSIQK-JKXSZHOXSA-N

Experimental Spectra

Spectrum Type	Description	Depositor Email	Depositor Organization	Depositor	Deposition Date	View
1D NMR	¹³C NMR Spectrum (1D, 600 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 100 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 200 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 300 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 400 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 500 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 700 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 800 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 900 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 1000 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, CDCl₃, simulated)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum

Predicted Spectra

Not Available

Chemical Shift Submissions

Not Available

Species

Species of Origin

Species Name	Source	Reference
Commiphora erlangeriana	JEOL database	Dekebo, A., et al, J. Nat. Prod. 65, 1252 (2002)

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as lignan lactones. These are lignans that contain a lactone moiety. They include 1-aryltetralin lactones, dibenzylbutyrolactone lignans, and podophyllotoxins, among others.

Kingdom

Organic compounds

Super Class

Lignans, neolignans and related compounds

Class

Lignan lactones

Sub Class

Not Available

Direct Parent

Lignan lactones

Alternative Parents

Substituents

Lignan lactone
1-aryltetralin lignan
Naphthofuran
Tetralin
Benzodioxole
Anisole
Alkyl aryl ether
Fatty acid ester
Dicarboxylic acid or derivatives
Fatty acyl
Benzenoid
Gamma butyrolactone
Alpha,beta-unsaturated carboxylic ester
Enoate ester
Tertiary alcohol
Oxolane
Lactone
1,2-diol
Carboxylic acid ester
Organoheterocyclic compound
Ether
Oxacycle
Carboxylic acid derivative
Acetal
Carbonyl group
Hydrocarbon derivative
Organic oxide
Alcohol
Organooxygen compound
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	2.16	ALOGPS
logP	2.51	ChemAxon
logS	-3.8	ALOGPS
pKa (Strongest Acidic)	10.74	ChemAxon
pKa (Strongest Basic)	-4.3	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	9	ChemAxon
Hydrogen Donor Count	2	ChemAxon
Polar Surface Area	139.21 Å²	ChemAxon
Rotatable Bond Count	7	ChemAxon
Refractivity	130.15 m³·mol⁻¹	ChemAxon
Polarizability	52.51 Å³	ChemAxon
Number of Rings	5	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	Yes	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

9235617

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

11060461

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

Dekebo, A., et al. (2002). Dekebo, A., et al, J. Nat. Prod. 65, 1252 (2002). J. Nat. Prod..

Showing NP-Card for Erlangerin A (NP0024648)

MOL for NP0024648 (Erlangerin A)

3D MOL for NP0024648 (Erlangerin A)

3D SDF for NP0024648 (Erlangerin A)

3D-SDF for NP0024648 (Erlangerin A)

PDB for NP0024648 (Erlangerin A)

3D PDB for NP0024648 (Erlangerin A)

SMILES for NP0024648 (Erlangerin A)

INCHI for NP0024648 (Erlangerin A)

Structure for NP0024648 (Erlangerin A)

3D Structure for NP0024648 (Erlangerin A)