#------------------------------------------------------------------------------
#$Date: 2025-08-19 09:12:48 +0300 (Tue, 19 Aug 2025) $
#$Revision: 301798 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/01/82/2018281.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2018281
loop_
_publ_author_name
'Gotoh, Kazuma'
'Ishida, Hiroyuki'
_publ_section_title
;
 Hydrogen-bonded structures of the isomeric compounds of phthalazine with
 3-chloro-2-nitrobenzoic acid, 4-chloro-2-nitrobenzoic acid and
 4-chloro-3-nitrobenzoic acid
;
_journal_coeditor_code           FG3232
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o473
_journal_page_last               o478
_journal_paper_doi               10.1107/S0108270111044829
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C7 H4 Cl N O4 , C8 H6 N2'
_chemical_formula_moiety         'C7 H4 Cl N O4, C8 H6 N2'
_chemical_formula_sum            'C15 H10 Cl N3 O4'
_chemical_formula_weight         331.71
_chemical_name_systematic
;
4-chloro-3-nitrobenzoic acid--phthalazine (1/1)
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                81.704(2)
_cell_angle_beta                 79.0781(18)
_cell_angle_gamma                85.647(2)
_cell_formula_units_Z            4
_cell_length_a                   6.9197(5)
_cell_length_b                   14.4263(12)
_cell_length_c                   14.4750(9)
_cell_measurement_reflns_used    15895
_cell_measurement_temperature    190.0(10)
_cell_measurement_theta_max      30.1
_cell_measurement_theta_min      3.0
_cell_volume                     1402.20(18)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku/MSC, 2004)'
_computing_data_collection       'PROCESS-AUTO (Rigaku/MSC, 2004)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2004)'
_computing_molecular_graphics
;
ORTEP-3 (Farrugia, 1997) and WinGX (Farrugia, 1999)
;
_computing_publication_material
;
CrystalStructure (Rigaku/MSC, 2004) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      190.0(10)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.956
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID II'
_diffrn_measurement_method       ω
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0558
_diffrn_reflns_av_sigmaI/netI    0.0643
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            22476
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         30.03
_exptl_absorpt_coefficient_mu    0.298
_exptl_absorpt_correction_T_max  0.982
_exptl_absorpt_correction_T_min  0.929
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(NUMABS; Higashi, 1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.571
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             680.00
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.526
_refine_diff_density_min         -0.480
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     423
_refine_ls_number_reflns         7849
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.0852
_refine_ls_R_factor_gt           0.0574
_refine_ls_shift/su_max_lt       0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[σ²(Fo²)+(0.0810P)²+0.0000P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1426
_refine_ls_wR_factor_ref         0.1538
_reflns_number_gt                4765
_reflns_number_total             7849
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            fg3232.cif
_cod_data_source_block           III
_cod_original_cell_volume        1402.20(17)
_cod_database_code               2018281
_cod_database_fobs_code          2018281
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 +x,+y,+z
2 -x,-y,-z
loop_
_atom_site_type_symbol
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
_atom_site_symmetry_multiplicity
Cl Cl1 0.90846(8) 0.11798(4) -0.29615(4) 0.03773(15) Uani d . 1 1
Cl Cl2 0.44568(8) 0.11350(4) 0.20068(4) 0.04165(16) Uani d . 1 1
O O1 0.7875(2) 0.49754(10) -0.07530(10) 0.0390(4) Uani d . 1 1
O O2 0.7307(2) 0.39169(11) 0.05393(10) 0.0394(4) Uani d . 1 1
O O3 0.6714(3) 0.06281(12) -0.00799(13) 0.0578(5) Uani d . 1 1
O O4 0.9263(3) 0.01878(12) -0.10527(13) 0.0575(5) Uani d . 1 1
O O5 0.2416(3) 0.41899(11) 0.51448(11) 0.0415(4) Uani d . 1 1
O O6 0.2946(2) 0.52181(10) 0.38222(11) 0.0400(4) Uani d . 1 1
O O7 0.3389(3) 0.09591(11) 0.50899(11) 0.0538(5) Uani d . 1 1
O O8 0.2970(3) 0.03085(11) 0.39038(12) 0.0477(4) Uani d . 1 1
N N1 0.8053(3) 0.07913(12) -0.07481(13) 0.0348(4) Uani d . 1 1
N N2 0.7277(3) 0.62891(12) 0.03523(12) 0.0327(4) Uani d . 1 1
N N3 0.7535(3) 0.71534(13) -0.01737(12) 0.0343(4) Uani d . 1 1
N N4 0.3245(2) 0.09936(12) 0.42563(12) 0.0314(4) Uani d . 1 1
N N5 0.1963(2) 0.56614(12) 0.60132(12) 0.0315(4) Uani d . 1 1
N N6 0.1509(3) 0.54527(12) 0.69854(12) 0.0338(4) Uani d . 1 1
C C1 0.8083(3) 0.33866(14) -0.09750(13) 0.0259(4) Uani d . 1 1
C C2 0.7880(3) 0.24528(14) -0.05996(14) 0.0268(4) Uani d . 1 1
H H2 0.7496 0.2284 0.0066 0.032 Uiso calc R 1 1
C C3 0.8238(3) 0.17658(14) -0.11969(14) 0.0274(4) Uani d . 1 1
C C4 0.8761(3) 0.20009(14) -0.21815(14) 0.0276(4) Uani d . 1 1
C C5 0.8941(3) 0.29344(14) -0.25478(14) 0.0290(4) Uani d . 1 1
H H5 0.9285 0.3106 -0.3215 0.035 Uiso calc R 1 1
C C6 0.8623(3) 0.36230(14) -0.19538(13) 0.0275(4) Uani d . 1 1
H H6 0.8775 0.4262 -0.2215 0.033 Uiso calc R 1 1
C C7 0.7714(3) 0.41187(14) -0.03132(14) 0.0286(4) Uani d . 1 1
C C8 0.7271(3) 0.78899(15) 0.02742(14) 0.0313(4) Uani d . 1 1
H H8 0.7443 0.8487 -0.0098 0.038 Uiso calc R 1 1
C C9 0.6748(3) 0.78670(14) 0.12736(13) 0.0258(4) Uani d . 1 1
C C10 0.6488(3) 0.86741(15) 0.17393(15) 0.0318(4) Uani d . 1 1
H H10 0.6648 0.9280 0.1385 0.038 Uiso calc R 1 1
C C11 0.6000(3) 0.85712(16) 0.27094(15) 0.0352(5) Uani d . 1 1
H H11 0.5821 0.9111 0.3028 0.042 Uiso calc R 1 1
C C12 0.5762(3) 0.76823(17) 0.32376(15) 0.0350(5) Uani d . 1 1
H H12 0.5429 0.7629 0.3910 0.042 Uiso calc R 1 1
C C13 0.6002(3) 0.68848(15) 0.28024(14) 0.0321(4) Uani d . 1 1
H H13 0.5834 0.6285 0.3168 0.039 Uiso calc R 1 1
C C14 0.6501(3) 0.69723(14) 0.18042(14) 0.0262(4) Uani d . 1 1
C C15 0.6794(3) 0.62040(14) 0.12769(14) 0.0298(4) Uani d . 1 1
H H15 0.6632 0.5591 0.1615 0.036 Uiso calc R 1 1
C C16 0.3195(3) 0.35862(14) 0.36924(14) 0.0266(4) Uani d . 1 1
C C17 0.3045(3) 0.26855(14) 0.41692(14) 0.0263(4) Uani d . 1 1
H H17 0.2688 0.2593 0.4842 0.032 Uiso calc R 1 1
C C18 0.3409(3) 0.19156(13) 0.36776(13) 0.0256(4) Uani d . 1 1
C C19 0.3927(3) 0.20401(14) 0.26844(14) 0.0280(4) Uani d . 1 1
C C20 0.4088(3) 0.29465(15) 0.22163(14) 0.0308(4) Uani d . 1 1
H H20 0.4459 0.3043 0.1545 0.037 Uiso calc R 1 1
C C21 0.3719(3) 0.37094(14) 0.27075(14) 0.0297(4) Uani d . 1 1
H H21 0.3824 0.4325 0.2371 0.036 Uiso calc R 1 1
C C22 0.2831(3) 0.44220(14) 0.42219(14) 0.0293(4) Uani d . 1 1
C C23 0.1152(3) 0.61542(14) 0.74862(14) 0.0303(4) Uani d . 1 1
H H23 0.0807 0.6009 0.8156 0.036 Uiso calc R 1 1
C C24 0.1242(3) 0.71131(14) 0.71005(14) 0.0262(4) Uani d . 1 1
C C25 0.0860(3) 0.78511(15) 0.76636(15) 0.0332(5) Uani d . 1 1
H H25 0.0511 0.7720 0.8335 0.040 Uiso calc R 1 1
C C26 0.0999(3) 0.87563(15) 0.72323(17) 0.0375(5) Uani d . 1 1
H H26 0.0741 0.9256 0.7607 0.045 Uiso calc R 1 1
C C27 0.1519(3) 0.89573(15) 0.62415(17) 0.0380(5) Uani d . 1 1
H H27 0.1619 0.9592 0.5956 0.046 Uiso calc R 1 1
C C28 0.1886(3) 0.82524(15) 0.56790(15) 0.0335(5) Uani d . 1 1
H H28 0.2229 0.8396 0.5009 0.040 Uiso calc R 1 1
C C29 0.1746(3) 0.73151(13) 0.61081(14) 0.0258(4) Uani d . 1 1
C C30 0.2083(3) 0.65275(15) 0.56057(14) 0.0308(4) Uani d . 1 1
H H30 0.2415 0.6637 0.4933 0.037 Uiso calc R 1 1
H H1 0.755(5) 0.544(3) -0.028(3) 0.108(12) Uiso d . 1 1
H H5A 0.216(5) 0.479(3) 0.545(3) 0.125(14) Uiso d . 1 1
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C7 O1 H1 110(2)
C22 O5 H5A 108(2)
O3 N1 O4 123.56(19)
O3 N1 C3 117.54(17)
O4 N1 C3 118.89(18)
C15 N2 N3 120.85(16)
C8 N3 N2 118.15(17)
O8 N4 O7 123.10(19)
O8 N4 C18 120.11(17)
O7 N4 C18 116.79(16)
C30 N5 N6 121.11(16)
C23 N6 N5 117.75(17)
C2 C1 C6 119.32(17)
C2 C1 C7 118.94(17)
C6 C1 C7 121.74(18)
C1 C2 C3 119.83(18)
C1 C2 H2 120.1
C3 C2 H2 120.1
C2 C3 C4 121.03(18)
C2 C3 N1 116.85(17)
C4 C3 N1 122.12(17)
C5 C4 C3 118.60(17)
C5 C4 Cl1 118.46(15)
C3 C4 Cl1 122.88(16)
C4 C5 C6 120.69(18)
C4 C5 H5 119.7
C6 C5 H5 119.7
C5 C6 C1 120.52(19)
C5 C6 H6 119.7
C1 C6 H6 119.7
O2 C7 O1 124.59(18)
O2 C7 C1 122.13(19)
O1 C7 C1 113.28(17)
N3 C8 C9 125.0(2)
N3 C8 H8 117.5
C9 C8 H8 117.5
C14 C9 C10 120.10(18)
C14 C9 C8 116.09(17)
C10 C9 C8 123.81(19)
C11 C10 C9 119.0(2)
C11 C10 H10 120.5
C9 C10 H10 120.5
C10 C11 C12 120.94(19)
C10 C11 H11 119.5
C12 C11 H11 119.5
C13 C12 C11 121.27(19)
C13 C12 H12 119.4
C11 C12 H12 119.4
C12 C13 C14 118.9(2)
C12 C13 H13 120.6
C14 C13 H13 120.6
C9 C14 C13 119.81(18)
C9 C14 C15 116.13(18)
C13 C14 C15 124.06(19)
N2 C15 C14 123.76(19)
N2 C15 H15 118.1
C14 C15 H15 118.1
C17 C16 C21 118.89(17)
C17 C16 C22 120.99(18)
C21 C16 C22 120.11(18)
C16 C17 C18 120.75(18)
C16 C17 H17 119.6
C18 C17 H17 119.6
C17 C18 C19 120.35(18)
C17 C18 N4 116.12(17)
C19 C18 N4 123.53(17)
C20 C19 C18 118.28(17)
C20 C19 Cl2 117.52(15)
C18 C19 Cl2 124.16(16)
C21 C20 C19 121.16(18)
C21 C20 H20 119.4
C19 C20 H20 119.4
C20 C21 C16 120.56(19)
C20 C21 H21 119.7
C16 C21 H21 119.7
O6 C22 O5 124.83(18)
O6 C22 C16 122.36(18)
O5 C22 C16 112.80(18)
N6 C23 C24 124.70(19)
N6 C23 H23 117.7
C24 C23 H23 117.7
C29 C24 C25 119.96(19)
C29 C24 C23 116.91(17)
C25 C24 C23 123.13(19)
C26 C25 C24 119.2(2)
C26 C25 H25 120.4
C24 C25 H25 120.4
C25 C26 C27 120.79(19)
C25 C26 H26 119.6
C27 C26 H26 119.6
C28 C27 C26 121.1(2)
C28 C27 H27 119.5
C26 C27 H27 119.5
C27 C28 C29 119.1(2)
C27 C28 H28 120.4
C29 C28 H28 120.4
C24 C29 C28 119.86(17)
C24 C29 C30 115.69(18)
C28 C29 C30 124.45(19)
N5 C30 C29 123.81(19)
N5 C30 H30 118.1
C29 C30 H30 118.1
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
Cl1 C4 1.7257(18)
Cl2 C19 1.7210(19)
O1 C7 1.309(3)
O1 H1 1.01(4)
O2 C7 1.210(2)
O3 N1 1.215(2)
O4 N1 1.230(2)
O5 C22 1.311(2)
O5 H5A 1.02(4)
O6 C22 1.210(2)
O7 N4 1.223(2)
O8 N4 1.218(2)
N1 C3 1.465(3)
N2 C15 1.307(3)
N2 N3 1.369(3)
N3 C8 1.307(2)
N4 C18 1.466(3)
N5 C30 1.304(3)
N5 N6 1.376(2)
N6 C23 1.310(2)
C1 C2 1.385(3)
C1 C6 1.394(3)
C1 C7 1.502(2)
C2 C3 1.386(2)
C2 H2 0.9500
C3 C4 1.400(3)
C4 C5 1.380(3)
C5 C6 1.384(2)
C5 H5 0.9500
C6 H6 0.9500
C8 C9 1.419(3)
C8 H8 0.9500
C9 C14 1.408(3)
C9 C10 1.411(3)
C10 C11 1.370(3)
C10 H10 0.9500
C11 C12 1.399(3)
C11 H11 0.9500
C12 C13 1.374(3)
C12 H12 0.9500
C13 C14 1.410(3)
C13 H13 0.9500
C14 C15 1.415(3)
C15 H15 0.9500
C16 C17 1.382(3)
C16 C21 1.391(3)
C16 C22 1.501(3)
C17 C18 1.386(2)
C17 H17 0.9500
C18 C19 1.403(3)
C19 C20 1.385(3)
C20 C21 1.377(3)
C20 H20 0.9500
C21 H21 0.9500
C23 C24 1.416(3)
C23 H23 0.9500
C24 C29 1.405(3)
C24 C25 1.412(3)
C25 C26 1.366(3)
C25 H25 0.9500
C26 C27 1.404(3)
C26 H26 0.9500
C27 C28 1.372(3)
C27 H27 0.9500
C28 C29 1.407(3)
C28 H28 0.9500
C29 C30 1.417(3)
C30 H30 0.9500
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_site_symmetry_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_publ_flag
O1 H1 N2 . 1.01(4) 1.61(4) 2.613(2) 171(4) y
O5 H5A N5 . 1.02(4) 1.58(4) 2.589(2) 172(3) y
C13 H13 O6 . 0.95 2.57 3.316(3) 136 y
C20 H20 O2 . 0.95 2.52 3.203(3) 129 y
C23 H23 O2 2_666 0.95 2.51 3.220(2) 132 y
C26 H26 O4 1_466 0.95 2.53 3.441(3) 160 y
C27 H27 O7 1_565 0.95 2.46 3.340(3) 155 y
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
C15 N2 N3 C8 -0.5(3)
C30 N5 N6 C23 1.7(3)
C6 C1 C2 C3 0.8(3)
C7 C1 C2 C3 -179.15(17)
C1 C2 C3 C4 -1.5(3)
C1 C2 C3 N1 178.21(16)
O3 N1 C3 C2 39.3(3)
O4 N1 C3 C2 -139.6(2)
O3 N1 C3 C4 -141.0(2)
O4 N1 C3 C4 40.1(3)
C2 C3 C4 C5 0.9(3)
N1 C3 C4 C5 -178.81(17)
C2 C3 C4 Cl1 -176.15(15)
N1 C3 C4 Cl1 4.2(3)
C3 C4 C5 C6 0.4(3)
Cl1 C4 C5 C6 177.59(15)
C4 C5 C6 C1 -1.1(3)
C2 C1 C6 C5 0.5(3)
C7 C1 C6 C5 -179.56(17)
C2 C1 C7 O2 2.4(3)
C6 C1 C7 O2 -177.53(18)
C2 C1 C7 O1 -177.47(17)
C6 C1 C7 O1 2.6(3)
N2 N3 C8 C9 0.5(3)
N3 C8 C9 C14 -0.1(3)
N3 C8 C9 C10 179.46(19)
C14 C9 C10 C11 0.2(3)
C8 C9 C10 C11 -179.36(18)
C9 C10 C11 C12 0.1(3)
C10 C11 C12 C13 -0.2(3)
C11 C12 C13 C14 0.1(3)
C10 C9 C14 C13 -0.3(3)
C8 C9 C14 C13 179.29(16)
C10 C9 C14 C15 -179.90(17)
C8 C9 C14 C15 -0.3(3)
C12 C13 C14 C9 0.1(3)
C12 C13 C14 C15 179.70(18)
N3 N2 C15 C14 0.1(3)
C9 C14 C15 N2 0.3(3)
C13 C14 C15 N2 -179.26(18)
C21 C16 C17 C18 0.0(3)
C22 C16 C17 C18 -179.10(17)
C16 C17 C18 C19 -0.3(3)
C16 C17 C18 N4 178.84(16)
O8 N4 C18 C17 158.68(18)
O7 N4 C18 C17 -21.1(3)
O8 N4 C18 C19 -22.2(3)
O7 N4 C18 C19 158.08(19)
C17 C18 C19 C20 0.9(3)
N4 C18 C19 C20 -178.24(17)
C17 C18 C19 Cl2 178.65(15)
N4 C18 C19 Cl2 -0.5(3)
C18 C19 C20 C21 -1.1(3)
Cl2 C19 C20 C21 -178.99(15)
C19 C20 C21 C16 0.7(3)
C17 C16 C21 C20 -0.1(3)
C22 C16 C21 C20 178.93(17)
C17 C16 C22 O6 -179.76(19)
C21 C16 C22 O6 1.2(3)
C17 C16 C22 O5 1.2(3)
C21 C16 C22 O5 -177.84(17)
N5 N6 C23 C24 -1.5(3)
N6 C23 C24 C29 0.2(3)
N6 C23 C24 C25 -179.51(19)
C29 C24 C25 C26 -0.4(3)
C23 C24 C25 C26 179.38(18)
C24 C25 C26 C27 -0.2(3)
C25 C26 C27 C28 0.6(3)
C26 C27 C28 C29 -0.4(3)
C25 C24 C29 C28 0.5(3)
C23 C24 C29 C28 -179.22(17)
C25 C24 C29 C30 -179.44(17)
C23 C24 C29 C30 0.8(3)
C27 C28 C29 C24 -0.2(3)
C27 C28 C29 C30 179.82(19)
N6 N5 C30 C29 -0.7(3)
C24 C29 C30 N5 -0.6(3)
C28 C29 C30 N5 179.45(18)
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 PubChem 139061212
