About (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile
(3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile (PubChem CID 159530872) has the molecular formula C186H204Cl2N46O9S
and a molecular weight of 3330.96 g/mol. Its IUPAC name is (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile.
Frequently Asked Questions
What is the IUPAC name of (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile?
The IUPAC name of (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile (CID 159530872) is (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile.
What is the SMILES notation for (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile?
The canonical SMILES for (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile is COc1cc2ccccc2cc1C(=O)N1CCCC[C@H]1c1cc2nc(N3C[C@@H](C#N)[C@@H](C)C3)c(C)cn2n1.COc1ccsc1C(=O)N1CCCC[C@H]1c1cc2nc(N3C[C@@H](C#N)[C@@H](C)C3)c(C)cn2n1.Cc1cccc(C(=O)N2CCCC[C@H]2c2cc3nc(N4C[C@@H](C#N)[C@@H](C)C4)c(C)cn3n2)n1.Cc1cccnc1C(=O)N1CCCC[C@H]1c1cc2nc(N3C[C@@H](C#N)[C@@H](C)C3)c(C)cn2n1.Cc1cn2nc([C@@H]3CCCCN3C(=O)c3ccc(Cl)c(Cl)c3)cc2nc1N1C[C@@H](C#N)[C@@H](C)C1.Cc1cn2nc([C@@H]3CCCCN3C(=O)c3cccc4[nH]ncc34)cc2nc1N1C[C@@H](C#N)[C@@H](C)C1.Cc1cn2nc([C@@H]3CCCCN3C(=O)c3ccccc3-c3ccccc3)cc2nc1N1C[C@@H](C#N)[C@@H](C)C1.
What is the InChIKey of (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile?
The InChIKey is MCZAXFOZDFKKPB-GTZZTBIYSA-N. The full InChI is InChI=1S/C31H32N6O.C30H32N6O2.C26H28N8O.C25H26Cl2N6O.2C25H29N7O.C24H28N6O2S/c1-21-18-35(20-24(21)17-32)30-22(2)19-37-29(33-30)16-27(34-37)28-14-8-9-15-36(28)31(38)26-13-7-6-12-25(26)23-10-4-3-5-11-23;1-19-16-34(18-23(19)15-31)29-20(2)17-36-28(32-29)14-25(33-36)26-10-6-7-11-35(26)30(37)24-12-21-8-4-5-9-22(21)13-27(24)38-3;1-16-13-32(15-18(16)11-27)25-17(2)14-34-24(29-25)10-22(31-34)23-8-3-4-9-33(23)26(35)19-6-5-7-21-20(19)12-28-30-21;1-15-12-31(14-18(15)11-28)24-16(2)13-33-23(29-24)10-21(30-33)22-5-3-4-8-32(22)25(34)17-6-7-19(26)20(27)9-17;1-16-13-30(15-19(16)12-26)24-17(2)14-32-23(28-24)11-21(29-32)22-9-4-5-10-31(22)25(33)20-8-6-7-18(3)27-20;1-16-7-6-9-27-23(16)25(33)31-10-5-4-8-21(31)20-11-22-28-24(18(3)14-32(22)29-20)30-13-17(2)19(12-26)15-30;1-15-12-28(14-17(15)11-25)23-16(2)13-30-21(26-23)10-18(27-30)19-6-4-5-8-29(19)24(31)22-20(32-3)7-9-33-22/h3-7,10-13,16,19,21,24,28H,8-9,14-15,18,20H2,1-2H3;4-5,8-9,12-14,17,19,23,26H,6-7,10-11,16,18H2,1-3H3;5-7,10,12,14,16,18,23H,3-4,8-9,13,15H2,1-2H3,(H,28,30);6-7,9-10,13,15,18,22H,3-5,8,12,14H2,1-2H3;6-8,11,14,16,19,22H,4-5,9-10,13,15H2,1-3H3;6-7,9,11,14,17,19,21H,4-5,8,10,13,15H2,1-3H3;7,9-10,13,15,17,19H,4-6,8,12,14H2,1-3H3/t21-,24+,28-;19-,23+,26-;16-,18+,23-;15-,18+,22-;16-,19+,22-;17-,19+,21-;15-,17+,19-/m0000000/s1.
What are the key properties of (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile?
(3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile has a molecular weight of 3330.96 g/mol, XLogP of 31.50, 24 rotatable bonds, 1 hydrogen bond donors, and 48 hydrogen bond acceptors.
Where does this data come from?
All data for (3S,4R)-1-[2-[(2S)-1-(3,4-dichlorobenzoyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(1H-indazole-4-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxynaphthalene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-1-[2-[(2S)-1-(3-methoxythiophene-2-carbonyl)piperidin-2-yl]-6-methylpyrazolo[1,5-a]pyrimidin-5-yl]-4-methylpyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(3-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(6-methylpyridine-2-carbonyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile;(3S,4R)-4-methyl-1-[6-methyl-2-[(2S)-1-(2-phenylbenzoyl)piperidin-2-yl]pyrazolo[1,5-a]pyrimidin-5-yl]pyrrolidine-3-carbonitrile is sourced from PubChem (CID 159530872), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).