2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine

C112H117Br5ClF18N21O12 — CID 158557046

IUPAC2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine
SMILESCC/C(C)=C\CN(C)c1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)c(Br)nc12.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)cnc12.CCc1nc2c(C(CC)CC)cn(C)c2nc1-c1ccc(OC(F)(F)F)cc1OC.CNc1cncc(-c2ccc(OC(F)(F)F)cc2OC)n1.CNc1cncc(Cl)n1.CNc1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br
InChIInChI=1S/C22H26F3N3O2.C20H21BrF3N3O2.C20H22F3N3O2.C19H20Br2F3N3O2.C13H10Br2F3N3O2.C13H12F3N3O2.C5H6ClN3/c1-6-13(7-2)16-12-28(4)21-20(16)26-17(8-3)19(27-21)15-10-9-14(11-18(15)29-5)30-22(23,24)25;1-5-11(6-2)14-10-27(3)19-17(14)25-18(21)16(26-19)13-8-7-12(9-15(13)28-4)29-20(22,23)24;1-5-12(6-2)15-11-26(3)19-18(15)24-10-16(25-19)14-8-7-13(9-17(14)27-4)28-20(21,22)23;1-5-11(2)8-9-27(3)18-17(21)26-16(20)15(25-18)13-7-6-12(10-14(13)28-4)29-19(22,23)24;1-19-12-11(15)21-10(14)9(20-12)7-4-3-6(5-8(7)22-2)23-13(16,17)18;1-17-12-7-18-6-10(19-12)9-4-3-8(5-11(9)20-2)21-13(14,15)16;1-7-5-3-8-2-4(6)9-5/h9-13H,6-8H2,1-5H3;7-11H,5-6H2,1-4H3;7-12H,5-6H2,1-4H3;6-8,10H,5,9H2,1-4H3;3-5H,1-2H3,(H,19,20);3-7H,1-2H3,(H,17,19);2-3H,1H3,(H,7,9)/b;;;11-8-;;;
InChIKeyHQKPLVFPKDWUAX-MDYZUCHMSA-N
MW2726.24 g/mol
LogP32.91
Rot. Bonds35

About 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine

2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine (PubChem CID 158557046) has the molecular formula C112H117Br5ClF18N21O12 and a molecular weight of 2726.24 g/mol. Its IUPAC name is 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine.

Molecular Properties

Compound Name2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine
PubChem CID158557046
Molecular FormulaC112H117Br5ClF18N21O12
Molecular Weight2726.24 g/mol
Exact Mass2719.45
IUPAC Name2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine
SMILESCC/C(C)=C\CN(C)c1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)c(Br)nc12.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)cnc12.CCc1nc2c(C(CC)CC)cn(C)c2nc1-c1ccc(OC(F)(F)F)cc1OC.CNc1cncc(-c2ccc(OC(F)(F)F)cc2OC)n1.CNc1cncc(Cl)n1.CNc1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br
InChIInChI=1S/C22H26F3N3O2.C20H21BrF3N3O2.C20H22F3N3O2.C19H20Br2F3N3O2.C13H10Br2F3N3O2.C13H12F3N3O2.C5H6ClN3/c1-6-13(7-2)16-12-28(4)21-20(16)26-17(8-3)19(27-21)15-10-9-14(11-18(15)29-5)30-22(23,24)25;1-5-11(6-2)14-10-27(3)19-17(14)25-18(21)16(26-19)13-8-7-12(9-15(13)28-4)29-20(22,23)24;1-5-12(6-2)15-11-26(3)19-18(15)24-10-16(25-19)14-8-7-13(9-17(14)27-4)28-20(21,22)23;1-5-11(2)8-9-27(3)18-17(21)26-16(20)15(25-18)13-7-6-12(10-14(13)28-4)29-19(22,23)24;1-19-12-11(15)21-10(14)9(20-12)7-4-3-6(5-8(7)22-2)23-13(16,17)18;1-17-12-7-18-6-10(19-12)9-4-3-8(5-11(9)20-2)21-13(14,15)16;1-7-5-3-8-2-4(6)9-5/h9-13H,6-8H2,1-5H3;7-11H,5-6H2,1-4H3;7-12H,5-6H2,1-4H3;6-8,10H,5,9H2,1-4H3;3-5H,1-2H3,(H,19,20);3-7H,1-2H3,(H,17,19);2-3H,1H3,(H,7,9)/b;;;11-8-;;;
InChIKeyHQKPLVFPKDWUAX-MDYZUCHMSA-N
XLogP32.91
TPSA345.34 Ų
H-Bond Donors3
H-Bond Acceptors33
Rotatable Bonds35
Heavy Atoms169
Complexity

Lipinski Rule of Five

3 violations

RuleValue
MW ≤ 5002726.24
LogP ≤ 532.91
H-Bond Donors ≤ 53
H-Bond Acceptors ≤ 1033

Computed Properties (RDKit)

Structural Alerts{'alert_name': 'isolated_alkene', 'substructure': 'N/A'}

Analyze 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine with MolForge

Explore ADMET properties, 3D molecular structure, drug-likeness score, and discover similar compounds using our AI-powered platform.

Launch Full Analysis

Related Compounds

Frequently Asked Questions

What is the IUPAC name of 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine?
The IUPAC name of 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine (CID 158557046) is 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine.
What is the SMILES notation for 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine?
The canonical SMILES for 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine is CC/C(C)=C\CN(C)c1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)c(Br)nc12.CCC(CC)c1cn(C)c2nc(-c3ccc(OC(F)(F)F)cc3OC)cnc12.CCc1nc2c(C(CC)CC)cn(C)c2nc1-c1ccc(OC(F)(F)F)cc1OC.CNc1cncc(-c2ccc(OC(F)(F)F)cc2OC)n1.CNc1cncc(Cl)n1.CNc1nc(-c2ccc(OC(F)(F)F)cc2OC)c(Br)nc1Br.
What is the InChIKey of 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine?
The InChIKey is HQKPLVFPKDWUAX-MDYZUCHMSA-N. The full InChI is InChI=1S/C22H26F3N3O2.C20H21BrF3N3O2.C20H22F3N3O2.C19H20Br2F3N3O2.C13H10Br2F3N3O2.C13H12F3N3O2.C5H6ClN3/c1-6-13(7-2)16-12-28(4)21-20(16)26-17(8-3)19(27-21)15-10-9-14(11-18(15)29-5)30-22(23,24)25;1-5-11(6-2)14-10-27(3)19-17(14)25-18(21)16(26-19)13-8-7-12(9-15(13)28-4)29-20(22,23)24;1-5-12(6-2)15-11-26(3)19-18(15)24-10-16(25-19)14-8-7-13(9-17(14)27-4)28-20(21,22)23;1-5-11(2)8-9-27(3)18-17(21)26-16(20)15(25-18)13-7-6-12(10-14(13)28-4)29-19(22,23)24;1-19-12-11(15)21-10(14)9(20-12)7-4-3-6(5-8(7)22-2)23-13(16,17)18;1-17-12-7-18-6-10(19-12)9-4-3-8(5-11(9)20-2)21-13(14,15)16;1-7-5-3-8-2-4(6)9-5/h9-13H,6-8H2,1-5H3;7-11H,5-6H2,1-4H3;7-12H,5-6H2,1-4H3;6-8,10H,5,9H2,1-4H3;3-5H,1-2H3,(H,19,20);3-7H,1-2H3,(H,17,19);2-3H,1H3,(H,7,9)/b;;;11-8-;;;.
What are the key properties of 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine?
2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine has a molecular weight of 2726.24 g/mol, XLogP of 32.91, 35 rotatable bonds, 3 hydrogen bond donors, and 33 hydrogen bond acceptors.
Where does this data come from?
All data for 2-bromo-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-chloro-N-methylpyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methyl-N-[(Z)-3-methylpent-2-enyl]pyrazin-2-amine;3,5-dibromo-6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine;2-ethyl-3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;3-[2-methoxy-4-(trifluoromethoxy)phenyl]-5-methyl-7-pentan-3-ylpyrrolo[2,3-b]pyrazine;6-[2-methoxy-4-(trifluoromethoxy)phenyl]-N-methylpyrazin-2-amine is sourced from PubChem (CID 158557046), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).