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1.  4-Bromo-N-(4-meth­oxy-2-nitro­phen­yl)benzamide 
In the title compound, C14H11BrN2O4, the amide segment makes dihedral angles of 23.4 (2) and 20.5 (2)° with the benzene rings, while the dihedral angle between the bezene rings is 2.90 (8)°. The nitro and meth­oxy groups are almost coplanar with their bound benzene ring, with the r.m.s. deviation for the 11 non-H atoms being 0.0265 (1) Å. An intra­molecular N—H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, mol­ecules are linked into [2-10] chains by weak C—H⋯O and C—H⋯Br inter­actions, which form an R 2 2(8) motif between pairs of mol­ecules in the chain. A Br⋯O [3.2018 (12) Å] short contact also occurs.
doi:10.1107/S1600536812010963
PMCID: PMC3344164  PMID: 22606167
2.  2-Chloro-N-(4-meth­oxy­phen­yl)benzamide 
In the title compound, C14H12ClNO2, the chloro- and meth­oxy-substituted benzene rings are close to orthogonal [dihedral angle = 79.20 (3)°]. These rings also make angles of 45.9 (3) and 33.5 (3)° with the amide –CONH– unit. The meth­oxy substituent lies close to the meth­oxy­benzene ring plane, with a maximum deviation of 0.142 (3) Å for the methyl C atom. The N—H bond is anti to the 2-chloro substituent of the aniline ring. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds form C(4) chains augmented by a weak C—H⋯O inter­action involving an ortho H atom of the meth­oxy benzene ring that generates an R 2 1(6) motif. The chains stack the mol­ecules into columns down the b axis. Adjacent columns are linked by additional C—H⋯O and C—H⋯π contacts, generating a three-dimensional network.
doi:10.1107/S1600536810043035
PMCID: PMC3009019  PMID: 21589131
3.  2-(2-Meth­oxy­phen­oxy)-3-nitro­pyridine 
In the title compound, C12H10N2O4, the pyridine and benzene rings are almost orthogonal, forming a dihedral angle of 86.63 (6)°. Each of the nitro [O—N—C—C torsion angle = −6.45 (19)°] and meth­oxy [C—O—C—C torsion angle = 179.69 (11)°] groups is almost coplanar with the ring to which it is connected. Mol­ecules are consolidated in the crystal structure via C—H⋯O inter­actions, forming a three-dimensional network.
doi:10.1107/S1600536811045247
PMCID: PMC3238845  PMID: 22199698
4.  Methyl (2Z)-2-(2-fluoro-4-meth­oxy­benzyl­idene)-5-(4-meth­oxy­phen­yl)-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thia­zolo[3,2-a]pyrimidine-6-carboxyl­ate 
The asymmetric unit of the title compound, C24H21FN2O5S, consists of two crystallographically independent mol­ecules. In each mol­ecule, the central dihydro­pyrimidine ring is significantly puckered and adopts a conformation which is best described as an inter­mediate between a boat and a screw boat. The least-squares planes of the dihydro­pyrimidine rings are almost coplanar with the fluoro-substituted benzene rings, making dihedral angles of 9.04 (7) and 6.68 (7)°, and almost perpendicular to the meth­oxy-substituted benzene rings with dihedral angles of 89.23 (7) and 88.30 (7)°. In the mol­ecular structure, S(6) ring motifs are formed by C—H⋯O and C—H⋯S hydrogen bonds. In the crystal, mol­ecules are linked into a three-dimensional network by inter­molecular C—H⋯O and C—H⋯F hydrogen bonds. The crystal structure is further stabilized by a C—H⋯π inter­action.
doi:10.1107/S1600536811025141
PMCID: PMC3212305  PMID: 22090962
5.  2-[(1,3-Benzo­thia­zol-2-yl)imino­meth­yl]-6-meth­oxy­phenol: a new monoclinic polymorph 
The title compound, C15H12N2O2S, is a P21/c polymorph of a previously reported P21/n polymorph [Büyükgüngör et al. (2004 ▶). Acta Cryst. E60, o1414–o1416]. The dihedral angle between the benzo­thia­zole (r.m.s. deviation = 0.010 Å) and the benzene ring of 7.86 (6)° compares with 10.76 (10)° in the literature structure. The meth­oxy substituent is almost coplanar with the benzene ring to which it is attached [C—O—C—C torsion angle = 178.31 (14)°] and the conformation about the imine bond [1.287 (2) Å] is E. There is an intra­molecular O—H⋯N hydrogen bond and the hy­droxy O and thio­ether S atoms are syn. In the crystal, columns are formed along the b axis as centrosymmetric dimeric aggregates, mediated by C—H⋯O inter­actions and linked by π–π inter­actions between the thia­zole and benzene rings [centroid-to-centroid distance = 3.8256 (10) Å].
doi:10.1107/S1600536813019387
PMCID: PMC3793768  PMID: 24109355
6.  Crystal structure of (E)-1-(4′-meth­oxy-[1,1′-biphen­yl]-4-yl)-3-(3-nitro­phen­yl)prop-2-en-1-one 
The title compound crystallized with two independent mol­ecules in the asymmetric unit. In the crystal, they are linked to one another, forming chains enclosing (10) and (12) ring motifs.
The title compound, C22H17NO4, crystallizes with two independent mol­ecules (A and B) in the asymmetric unit. Each mol­ecule exists as an E isomer with C—C=C—C torsion angles of −175.69 (17) and −178.41 (17)° in A and B, respectively. In mol­ecule A, the planes of the terminal benzene rings are twisted by an angle of 26.67 (10)°, while the biphenyl unit is non-planar, the dihedral angle between the rings being 30.81 (10)°. The dihedral angle between the nitro­phenyl ring and the inner phenyl ring is 6.50 (9)°. The corresponding values in mol­ecule B are 60.61 (9), 31.07 (8) and 31.05 (9)°. In the crystal, mol­ecules are arranged in a head-to-head manner, with the 3-nitro­phenyl groups nearly parallel to one another. The A and B mol­ecules are linked to one another via C—H⋯O hydrogen bonds, forming chains lying parallel to (-320) and enclosing R 2 2(10) and R 2 2(12) ring motifs. The meth­oxy group in both mol­ecules is positionally disordered with a refined occupancy ratio of 0.979 (4):0.021 (4) for mol­ecule A and 0.55 (4):0.45 (4) for mol­ecule B.
doi:10.1107/S2056989014025110
PMCID: PMC4331905
crystal structure; chalcones; C—H⋯O hydrogen bonding; main-residue disorder
7.  N-[(2-Chloro­phen­yl)sulfon­yl]-2-meth­oxy­benzamide 
The title compound, C14H12ClNO4S, crystallizes with two mol­ecules in the asymmetric unit. The dihedral angles between the benzene rings are 89.68 (1) (mol­ecule 1) and 82.9 (1)° (mol­ecule 2). In each mol­ecule, intra­molecular N—H⋯O hydrogen bonds between the amide H atom and the meth­oxy O atom generate S(6) loops. In the crystal, mol­ecule 2 is linked into inversion dimers through pairs of C—H⋯O inter­actions, forming an R 2 2(8) ring motif. Mol­ecules 1 and 2 are further linked along the b-axis direction through C—H⋯π inter­actions. The crystal structure is further stabilized by several π–π stacking inter­actions [centroid–centroid separations = 3.7793 (1), 3.6697 (1) and 3.6958 (1) Å], thus generating a three-dimensional architecture.
doi:10.1107/S1600536813029012
PMCID: PMC3884364  PMID: 24454140
8.  (4E)-N-[(2-Bromo­phen­yl)meth­oxy]-1,3-dimethyl-2,6-diphenyl­piperidin-4-imine 
In the title compound, C26H27BrN2O, the piperidine ring has a chair conformation and all ring substituents occupy equatorial positions, apart from the double-bonded N atom, which occupies a bis­ectional position. The dihedral angle formed between the phenyl rings is 61.18 (19)°, and the phenyl rings form dihedral angles of 49.78 (19) and 69.2 (18)° with the bromo­benzene ring. The latter is coplanar with the meth­oxy(methyl­idene)amine fragment [N—O—C—C torsion angle = −171.7 (2)°]. Linear supra­molecular chains, approximately along [112], sustained by C—H⋯π inter­actions, feature in the crystal packing.
doi:10.1107/S1600536812028887
PMCID: PMC3394050  PMID: 22798915
9.  2-(2-Meth­oxy­phen­oxy)pyrazine 
A significant twist is observed in the title molecule, C11H10N2O2, as seen in the dihedral angle between the pyrazine and benzene rings of 72.79 (8)°. The meth­oxy group is almost coplanar with the benzene ring to which it is attached [C—O—C—C torsion angle = 175.83 (15)°]. Centrosymmetric dimers are formed in the crystal structure which are held together by weak π–π inter­actions between pyrazine rings [centroid–centroid distance = 3.8534 (10) Å].
doi:10.1107/S1600536811044321
PMCID: PMC3247475  PMID: 22220093
10.  N-(4-Chloro­phen­yl)-4-meth­oxy­benzamide 
In the title compound, C14H12ClNO2, the mean plane through the amide group [–N—C=O–] forms dihedral angles of 27.55 (8) and 31.94 (7)° with the meth­oxy- and chloro-substituted benzene rings, respectively. The dihedral angle between the benzene rings is 59.24 (4)°. In the crystal, N—H⋯O and weak C—H⋯O hydrogen bonds link the mol­ecules into chains along the a axis.
doi:10.1107/S1600536812041384
PMCID: PMC3515183  PMID: 23284410
11.  (E)-4-Meth­oxy-N′-(3,4,5-trimeth­oxy­benzyl­idene)benzohydrazide 
In the asymmetric unit of the title compound, C18H20N2O5, there are two crystallographic independent mol­ecules. Both mol­ecules are twisted; the dihedral angle between the two benzene rings is 7.2 (5)° in one mol­ecule, whereas it is 85.9 (4)° in the other. Of the three meth­oxy groups in the 3,4,5-trimeth­oxy­phenyl unit, two meth­oxy groups at meta positions are approximately coplanar with the benzene plane [C—O—C—C torsion angles of −2.3 (13)–4.8 (11)°], but the other meth­oxy, at the para position, is out of the plane [C—O—C—C of 72.8 (9)° in one mol­ecule and −77.5 (9)° in the other]. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds and weak C—H⋯O inter­actions into tapes along the b axis. C—H⋯π inter­actions are also present.
doi:10.1107/S1600536812003534
PMCID: PMC3297292  PMID: 22412482
12.  1-(2,4-Di­nitro­phen­yl)-2-[(E)-(3,4,5-tri­meth­oxy­benzyl­idene)]hydrazine 
Mol­ecules of the title compound, C16H16N4O7, are not planar with a dihedral angle of 5.50 (11)° between the substituted benzene rings. The two meta-meth­oxy groups of the 3,4,5-tri­meth­oxy­benzene moiety lie in the plane of the attached ring [Cmeth­yl–O–C–C torsion angles −0.1 (4)° and −3.7 (3)°] while the para-meth­oxy substituent lies out of the plane [Cmeth­yl—O—C—C, −86.0 (3)°]. An intra­molecular N—H⋯O hydrogen bond involving the 2-nitro substituent generates an S(6) ring motif. In the crystal structure, mol­ecules are linked by weak C—H⋯O inter­actions into screw chains, that are arranged into a sheet parallel to the bc plane. These sheets are connected by π–π stacking inter­actions between the nitro and meth­oxy substituted aromatic rings with a centroid–centroid separation of 3.9420 (13) Å. C—H⋯π contacts further stabilize the two-dimensional network.
doi:10.1107/S1600536814001238
PMCID: PMC3998339  PMID: 24764900
13.  Benzamidinium 2-meth­oxy­benzoate 
The title mol­ecular salt, C7H9N2 +.C8H7O3 −, was synthesized by reaction between benzamidine (benzene­carboximidamide) and 2-meth­oxy­benzoic acid. In the cation, the amidinium group has two similar C—N bonds [1.3070 (17) and 1.3145 (16) Å] and is almost coplanar with the benzene ring, making a dihedral angle of 5.34 (12)°. In the anion, the meth­oxy substituent forces the carboxyl­ate group to be twisted by 69.45 (6)° with respect to the plane of the aromatic fragment. In the crystal, the components are connected by two N+—H⋯O− (±)CAHB (charge-assisted hydrogen bonds), forming centrosymmetric ionic dimers with graph-set motif R 2 2(8). These ionic dimers are then joined in ribbons running along the b-axis direction by another R 4 2(8) motif involving the remaining N+—H⋯O− hydrogen bonds. Remarkably, at variance with the well known carb­oxy­lic dimer R 2 2(8) motif, the carboxyl­ate–amidinium pair is not planar, the dihedral angle between the planes defined by the CN2 + and CO2 − atoms being 18.57 (12)°.
doi:10.1107/S1600536813016395
PMCID: PMC3770387  PMID: 24046672
14.  Ethyl 2-amino-4-(4-bromo­phen­yl)-6-meth­oxy-4H-benzo[h]chromene-3-carboxyl­ate 
In the title compound, C23H20BrNO4, the pyran ring has a flattened boat conformation with the O and methine C atoms lying to one side of the plane [0.160 (5) and 0.256 (6) Å, respectively] defined by the remaining atoms. Nevertheless, the 4H-benzo[h]chromene ring system approximates a plane (r.m.s. deviation = 0.116 Å) with the bromo­benzene ring almost perpendicular [dihedral angle = 83.27 (16)°] and the ester group coplanar [C—C—C—O = 3.4 (5)°]; the meth­oxy substituent is also coplanar [C—O—C—C = 174.5 (3)°]. In addition to an intra­molecular N—H⋯O(ester carbon­yl) hydrogen bond, the ester carbonyl O atom also forms an inter­molecular N—H⋯O hydrogen bond with the second amine H atom, generating a zigzag supra­molecular chain along the c axis in the crystal packing. The chains are linked into layers in the bc plane by N—H⋯Br hydrogen bonds, and these layers are consolidated into a three-dimensional architecture by C—H⋯π inter­actions.
doi:10.1107/S160053681300490X
PMCID: PMC3588478  PMID: 23476606
15.  [2,7-Dimeth­oxy-8-(4-meth­oxy­benzo­yl)naphthalen-1-yl](4-meth­oxy­phen­yl)methanone chloro­form monosolvate 
In the title compound, C28H24O6·CHCl3, the two 4-meth­oxy­benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti­parallel, the benzene rings making a dihedral angle of 25.76 (7)°. The naphthalene ring system makes dihedral angles of 72.51 (7) and 73.33 (7)° with the benzene rings. In the crystal, the naphthalene mol­ecules are linked by C—H⋯O inter­actions, forming a helical chain along the b-axis direction. A C—H⋯Cl inter­action is also observed between the aroylated naphthalene and chloro­form mol­ecules. The chloro­form mol­ecule is disordered over two positions with site occupancies of 0.478 (5) and 0.522 (5).
doi:10.1107/S1600536812050799
PMCID: PMC3588358  PMID: 23476400
16.  (E)-Methyl 3-(3,4-dimeth­oxy­phen­yl)-2-[(1,3-dioxoisoindolin-2-yl)meth­yl]acrylate 
In the title compound, C21H19NO6, the isoindole ring system is essentially planar [maximum deviation = 0.019 (2) Å for the N atom] and is oriented at a dihedral angle of 51.3 (1)° with respect to the benzene ring. The two meth­oxy groups are almost coplanar with the attached benzene ring [C—O—C—C = 3.7 (4) and 4.3 (4)°]. The mol­ecular conformation is stabilized by an intra­molecular C—H⋯O hydrogen bond, which generates an S(9) ring motif. In the crystal, mol­ecules are linked through bifurcated C—H⋯(O,O) hydrogen bonds having R 1 2(5) ring motifs, forming chains along the b-axis direction. The crystal packing is further stabilzed by π–π inter­actions [centriod–centroid distance = 3.463 (1) Å].
doi:10.1107/S1600536812010975
PMCID: PMC3344056  PMID: 22589965
17.  Crystal structure of (3E)-3-(2,4-di­nitro­phen­oxy­meth­yl)-4-phenyl­but-3-en-2-one 
In the title compound, C17H14N2O6, the conformation about the C=C double bond [1.345 (2) Å] is E, with the ketone moiety almost coplanar [C—C—C—C torsion angle = 9.5 (2)°] along with the phenyl ring [C—C—C—C = 5.9 (2)°]. The aromatic rings are almost perpendicular to each other [dihedral angle = 86.66 (7)°]. The 4-nitro moiety is approximately coplanar with the benzene ring to which it is attached [O—N—C—C = 4.2 (2)°], whereas the one in the ortho position is twisted [O—N—C—C = 138.28 (13)°]. The mol­ecules associate via C—H⋯O inter­actions, involving both O atoms from the 2-nitro group, to form a helical supra­molecular chain along [010]. Nitro–nitro N⋯O inter­actions [2.8461 (19) Å] connect the chains into layers that stack along [001].
doi:10.1107/S1600536814018819
PMCID: PMC4186202  PMID: 25309220
crystal structure; hydrogen bonding; N⋯O inter­actions
18.  (2,4-Dihy­droxy-6-meth­oxy­phen­yl)(3,5-dihy­droxy­phen­yl)methanone monohydrate 
The title benzophenone compound, C14H12O6·H2O, was isolated from the bark of Garcinia hombroniana Pierre (Guttiferae). The mol­ecule is twisted, the dihedral angle between the two benzene rings being 59.13 (7)°. The meth­oxy group is approximately coplanar with the attached benzene ring, with a C—O—C—C torsion angle of 1.91 (18)°. The water mol­ecule is disordered over two positions in a 0.555 (19):0.445 (19) ratio. An intra­molecular O—H⋯O hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by inter­molecular O—H⋯O hydrogen bonds. These inter­actions link the mol­ecules into sheets parallel to the ac plane. The sheets are stacked along the b axis by π–π inter­actions, with centroid–centroid distances of 3.6219 (7) Å. A weak O—H⋯π inter­action was also noted.
doi:10.1107/S1600536811037913
PMCID: PMC3201278  PMID: 22065717
19.  (E)-1-(2,4-Dinitro­phen­yl)-2-[1-(3-meth­oxy­phen­yl)ethyl­idene]hydrazine 
There are two crystallographically independent mol­ecules in the asymmetric unit of the title compound, C15H14N4O5, with different conformations for the meth­oxy groups. The mol­ecules are both slightly twisted, the dihedral angles between two benzene rings being 8.37 (18)° in one and 7.31 (18)° in the other. In both mol­ecules, the two nitro groups are essentially coplanar with their bound benzene ring, with the r.m.s. deviation of the dinitro­benzene plane being 0.0310 (3) Å in one mol­ecule and 0.0650 (3) Å in the other. In each mol­ecule, an intra­molecular N—H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, mol­ecules are linked by weak C—H⋯O inter­actions and stacked along the a axis through π–π inter­actions, with centroid–centroid distances of 3.651 (2) and 3.721 (2) Å. The crystal studied was a non-merohedral twin with a refined minor component of 20.1 (3)%.
doi:10.1107/S1600536812026979
PMCID: PMC3393954  PMID: 22798819
20.  2-(4-Meth­oxy­phen­oxy)-3-nitro­pyridine 
In the title mol­ecule, C12H10N2O4, the pyridine and benzene rings are almost orthogonal [dihedral angle = 86.69 (11)°], with the pyridine N atom directed towards the centre of the benzene ring. The –NO2 [O—N—C—C = −26.1 (3)°] and –OMe [C—O—C—C = 166.5 (2)°] substituents are not coplanar with their respective aromatic rings. In the crystal, supra­molecular layers in the ab plane are formed via C—H⋯π inter­actions involving methyl H atoms and the pyridine and benzene rings. Short N—O⋯π contacts (where the π-system is derived from the pyridine ring) occur between layers in the c-axis direction.
doi:10.1107/S1600536810034057
PMCID: PMC3007986  PMID: 21588752
21.  Crystal structure of (Z)-2,3-di­chloro-1,4-bis­(4-meth­oxy­phen­yl)but-2-ene-1,4-dione 
The title compound, C18H14Cl2O4, adopts a Z conformation around the cental C=C bond. The two aromatic rings of the mol­ecule are nearly perpendicular to each other, with a dihedral angle between of 86.22 (14)°. The meth­oxy substituents lie close to the plane of the attached benzene rings. The C(ar)—C(ar)—O—C(Me) torsion angles are −2.4 (7) and 7.5 (6)°. Weak C—H⋯O inter­actions link the mol­ecules forming a three-dimensional network. The crystal packing also displays short [3.160 (3) Å] Cl⋯O halogen-bonding contacts between mol­ecules related by the screw axis. The structure exhibits disorder of one carbonyl O atom with a refined occupancy ratio of 0.21 (6):0.79 (6).
doi:10.1107/S1600536814018790
PMCID: PMC4186131  PMID: 25309219
crystal structure; 2,3-di­chloro­but-2-ene-1,4-dione; di­chloro­methyl radical; CuCl/bpy; tri­chloro­methyl groups; stereoselectivity
22.  2-[(4-Meth­oxy-2-nitro­phen­yl)imino­meth­yl]phenol 
The crystal structure of the title compound, C14H12N2O4, contains four crystallographically independent mol­ecules in the asymmetric unit. All the mol­ecules have similar conformations; the dihedral angles between the aromatic rings are 33.1 (1), 33.76 (9), 31.41 (9) and 32.56 (10)°. Intra­molecular O—H⋯N hydrogen bonds form S(6) ring motifs in each molecule. In the crystal, there are two pairs of pseudo-inversion-related mol­ecules. Along the c axis, mol­ecules are stacked with π–π inter­actions between the 2-hy­droxy­phenyl and 4-meth­oxy-2-nitro­phenyl rings [centroid–centroid distances = 3.5441 (12)–3.7698 (12) Å].
doi:10.1107/S1600536812031212
PMCID: PMC3414359  PMID: 22904892
23.  Crystal structure of (2E)-1-(4-hy­droxy-3-meth­oxy­phen­yl)-3-(4-hy­droxy­phen­yl)prop-2-en-1-one 
In the title moleclue, C16H14O4, the dihedral angle between the benzene rings is 16.1 (3)°. The meth­oxy group is essentially coplanar with the benzene ring to which it is attached, with a C—O—C C torsion angle of 5.5 (9)°. In the crystal, mol­ecules are linked by O—H⋯O and bifurcated O—H⋯(O,O) hydrogen bonds, forming a three-dimensional network. The structure was refined as a two-component inversion twin.
doi:10.1107/S1600536814021953
PMCID: PMC4257319  PMID: 25484802
crystal structure; prop-2-en-1-one; chalcones; biological activity; hydrogen bonding
24.  (E)-Methyl 3-(4-ethyl­phen­yl)-2-{2-[(E)-(hy­droxy­imino)­meth­yl]phen­oxy­meth­yl}acrylate 
In the title compound, C20H21NO4, the two benzene rings are almost perpendicular to each other, making a dihedral angle of 86.1 (7)°. The hy­droxy­ethanimine group is essentially coplanar with the benzene ring, the largest deviation from the mean plane of the hy­droxy­ethanimine [C=N—OH] group being 0.011 (1) Å for the O atom. An intra­molecular C—H⋯O hydrogen bond occurs. The mol­ecules are linked into cyclic centrosymmetric R 2 2(6) dimers via O—H⋯N hydrogen bonds. Inter­molecular C—H⋯O hydrogen bonds link the mol­ecules, forming a C(8) chain along the a axis. The crystal packing is further stabilized by C—H⋯π inter­actions.
doi:10.1107/S1600536811038359
PMCID: PMC3201344  PMID: 22058811
25.  Crystal structure of (E)-3-(2,4-di­meth­oxy­phen­yl)-1-(1-hy­droxy­naphthalen-2-yl)prop-2-en-1-one 
In the title compound, C21H18O4, the C=C bond of the central enone group adopts an E conformation. The dihedral angle formed by the benzene ring and the naphthalene ring system is 6.60 (2)°. The meth­oxy groups on the benzene ring are essentially coplanar with the ring; the C—C—O—C torsion angles being 1.6 (2) and −177.1 (1)°. The hy­droxy group attached to the naphthalene ring is involved in an intra­molecular O—H⋯O hydrogen bond. The relative conformation of the two double bonds in the enone group is s-cisoid. In the crystal, weak C—H⋯O hydrogen bonds link the mol­ecules into chains propagating along [010].
doi:10.1107/S1600536814018704
PMCID: PMC4186154  PMID: 25309211
crystal structure; chalcone; enone; benzochalcone; naphthalene

Results 1-25 (649119)