2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione

C220H157N9O10S2 — CID 160729993

IUPAC2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione
SMILESCC(C)(C)c1ccc2cc(N(c3ccc4cc(C=C5C(=O)c6cc7ccccc7cc6C5=O)ccc4c3)c3cccc4ccccc34)ccc2c1.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.O=C1C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccccc4-c4ccccc4)ccc3c2)C(=O)c2cc3ccccc3cc21.O=C1C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)c2c1c(-c1ccccc1)c1ccccc1c2-c1ccccc1
InChIInChI=1S/C52H33NO2.C48H35NO2.C46H29NO2.C39H31N3O2S.C35H29N3O2S/c54-51-46(52(55)50-48(37-17-6-2-7-18-37)45-23-13-12-22-44(45)47(49(50)51)36-15-4-1-5-16-36)31-34-24-25-40-33-43(29-27-39(40)30-34)53(41-20-8-3-9-21-41)42-28-26-35-14-10-11-19-38(35)32-42;1-48(2,3)38-20-17-37-27-40(22-19-35(37)25-38)49(45-14-8-12-31-9-6-7-13-41(31)45)39-21-18-34-23-30(15-16-36(34)26-39)24-44-46(50)42-28-32-10-4-5-11-33(32)29-43(42)47(44)51;48-45-41-28-34-14-6-7-15-35(34)29-42(41)46(49)43(45)25-30-18-19-37-27-39(23-21-36(37)24-30)47(38-22-20-31-10-4-5-13-33(31)26-38)44-17-9-8-16-40(44)32-11-2-1-3-12-32;1-3-40-37(43)36(38(44)41(4-2)39(40)45)22-26-13-14-32-25-35(20-17-31(32)21-26)42(33-18-15-27-9-5-7-11-29(27)23-33)34-19-16-28-10-6-8-12-30(28)24-34;1-3-36-33(39)32(34(40)37(4-2)35(36)41)21-24-14-15-28-23-31(19-17-27(28)20-24)38(29-12-6-5-7-13-29)30-18-16-25-10-8-9-11-26(25)22-30/h1-33H;4-29H,1-3H3;1-29H;5-25H,3-4H2,1-2H3;5-23H,3-4H2,1-2H3
InChIKeyRUFBKDACYHFJIL-UHFFFAOYSA-N
MW3150.86 g/mol
LogP54.52
Rot. Bonds27

About 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione

2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione (PubChem CID 160729993) has the molecular formula C220H157N9O10S2 and a molecular weight of 3150.86 g/mol. Its IUPAC name is 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione.

Molecular Properties

Compound Name2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione
PubChem CID160729993
Molecular FormulaC220H157N9O10S2
Molecular Weight3150.86 g/mol
Exact Mass3148.15
IUPAC Name2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione
SMILESCC(C)(C)c1ccc2cc(N(c3ccc4cc(C=C5C(=O)c6cc7ccccc7cc6C5=O)ccc4c3)c3cccc4ccccc34)ccc2c1.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.O=C1C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccccc4-c4ccccc4)ccc3c2)C(=O)c2cc3ccccc3cc21.O=C1C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)c2c1c(-c1ccccc1)c1ccccc1c2-c1ccccc1
InChIInChI=1S/C52H33NO2.C48H35NO2.C46H29NO2.C39H31N3O2S.C35H29N3O2S/c54-51-46(52(55)50-48(37-17-6-2-7-18-37)45-23-13-12-22-44(45)47(49(50)51)36-15-4-1-5-16-36)31-34-24-25-40-33-43(29-27-39(40)30-34)53(41-20-8-3-9-21-41)42-28-26-35-14-10-11-19-38(35)32-42;1-48(2,3)38-20-17-37-27-40(22-19-35(37)25-38)49(45-14-8-12-31-9-6-7-13-41(31)45)39-21-18-34-23-30(15-16-36(34)26-39)24-44-46(50)42-28-32-10-4-5-11-33(32)29-43(42)47(44)51;48-45-41-28-34-14-6-7-15-35(34)29-42(41)46(49)43(45)25-30-18-19-37-27-39(23-21-36(37)24-30)47(38-22-20-31-10-4-5-13-33(31)26-38)44-17-9-8-16-40(44)32-11-2-1-3-12-32;1-3-40-37(43)36(38(44)41(4-2)39(40)45)22-26-13-14-32-25-35(20-17-31(32)21-26)42(33-18-15-27-9-5-7-11-29(27)23-33)34-19-16-28-10-6-8-12-30(28)24-34;1-3-36-33(39)32(34(40)37(4-2)35(36)41)21-24-14-15-28-23-31(19-17-27(28)20-24)38(29-12-6-5-7-13-29)30-18-16-25-10-8-9-11-26(25)22-30/h1-33H;4-29H,1-3H3;1-29H;5-25H,3-4H2,1-2H3;5-23H,3-4H2,1-2H3
InChIKeyRUFBKDACYHFJIL-UHFFFAOYSA-N
XLogP54.52
TPSA199.86 Ų
H-Bond Donors
H-Bond Acceptors17
Rotatable Bonds27
Heavy Atoms241
Complexity

Lipinski Rule of Five

3 violations

RuleValue
MW ≤ 5003150.86
LogP ≤ 554.52
H-Bond Donors ≤ 50
H-Bond Acceptors ≤ 1017

Computed Properties (RDKit)

Structural Alerts{'alert_name': 'ene_six_het_A(483)', 'substructure': 'N/A'}, {'alert_name': 'ene_five_one_A(55)', 'substructure': 'N/A'}, {'alert_name': 'Michael_acceptor_1', 'substructure': 'N/A'}, {'alert_name': 'Michael_acceptor_4', 'substructure': 'N/A'}, {'alert_name': 'Thiocarbonyl_group', 'substructure': 'N/A'}

Analyze 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione with MolForge

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Frequently Asked Questions

What is the IUPAC name of 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione?
The IUPAC name of 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione (CID 160729993) is 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione.
What is the SMILES notation for 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione?
The canonical SMILES for 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione is CC(C)(C)c1ccc2cc(N(c3ccc4cc(C=C5C(=O)c6cc7ccccc7cc6C5=O)ccc4c3)c3cccc4ccccc34)ccc2c1.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.CCN1C(=O)C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)N(CC)C1=S.O=C1C(=Cc2ccc3cc(N(c4ccc5ccccc5c4)c4ccccc4-c4ccccc4)ccc3c2)C(=O)c2cc3ccccc3cc21.O=C1C(=Cc2ccc3cc(N(c4ccccc4)c4ccc5ccccc5c4)ccc3c2)C(=O)c2c1c(-c1ccccc1)c1ccccc1c2-c1ccccc1.
What is the InChIKey of 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione?
The InChIKey is RUFBKDACYHFJIL-UHFFFAOYSA-N. The full InChI is InChI=1S/C52H33NO2.C48H35NO2.C46H29NO2.C39H31N3O2S.C35H29N3O2S/c54-51-46(52(55)50-48(37-17-6-2-7-18-37)45-23-13-12-22-44(45)47(49(50)51)36-15-4-1-5-16-36)31-34-24-25-40-33-43(29-27-39(40)30-34)53(41-20-8-3-9-21-41)42-28-26-35-14-10-11-19-38(35)32-42;1-48(2,3)38-20-17-37-27-40(22-19-35(37)25-38)49(45-14-8-12-31-9-6-7-13-41(31)45)39-21-18-34-23-30(15-16-36(34)26-39)24-44-46(50)42-28-32-10-4-5-11-33(32)29-43(42)47(44)51;48-45-41-28-34-14-6-7-15-35(34)29-42(41)46(49)43(45)25-30-18-19-37-27-39(23-21-36(37)24-30)47(38-22-20-31-10-4-5-13-33(31)26-38)44-17-9-8-16-40(44)32-11-2-1-3-12-32;1-3-40-37(43)36(38(44)41(4-2)39(40)45)22-26-13-14-32-25-35(20-17-31(32)21-26)42(33-18-15-27-9-5-7-11-29(27)23-33)34-19-16-28-10-6-8-12-30(28)24-34;1-3-36-33(39)32(34(40)37(4-2)35(36)41)21-24-14-15-28-23-31(19-17-27(28)20-24)38(29-12-6-5-7-13-29)30-18-16-25-10-8-9-11-26(25)22-30/h1-33H;4-29H,1-3H3;1-29H;5-25H,3-4H2,1-2H3;5-23H,3-4H2,1-2H3.
What are the key properties of 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione?
2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione has a molecular weight of 3150.86 g/mol, XLogP of 54.52, 27 rotatable bonds, 0 hydrogen bond donors, and 17 hydrogen bond acceptors.
Where does this data come from?
All data for 2-[[6-[(6-tert-butylnaphthalen-2-yl)-naphthalen-1-ylamino]naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione;1,3-diethyl-5-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione;5-[[6-(dinaphthalen-2-ylamino)naphthalen-2-yl]methylidene]-1,3-diethyl-2-sulfanylidene-1,3-diazinane-4,6-dione;2-[[6-(N-naphthalen-2-ylanilino)naphthalen-2-yl]methylidene]-4,9-diphenylcyclopenta[b]naphthalene-1,3-dione;2-[[6-(N-naphthalen-2-yl-2-phenylanilino)naphthalen-2-yl]methylidene]cyclopenta[b]naphthalene-1,3-dione is sourced from PubChem (CID 160729993), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).