2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid

C172H307N21O7 — CID 159333093

About 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid

2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid (PubChem CID 159333093) has the molecular formula C172H307N21O7 and a molecular weight of 2781.49 g/mol. Its IUPAC name is 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid.

Molecular Properties

• Compound Name: 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid
• PubChem CID: 159333093
• Molecular Formula: C172H307N21O7
• Molecular Weight: 2781.49 g/mol
• Exact Mass: 2779.43
• IUPAC Name: 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid
• SMILES: CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CC(C(=O)O)C3)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CC(O)C3)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CCCC3C(=O)O)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2CCCN12.CC(C)(C)C1=NC(C)(C(C)(C)C)C(C(C)(C)C)=C2CC(CO)CN12.CC(C)(C)C1=NC(C)(C(C)(C)C)C(C(C)(C)C)=C2CCCN12.CN(C)C1CCN2C(C(C)(C)C)=NC(C(C)(C)C)C(C(C)(C)C)=C12.CN(CCO)C1CCN2C(C(C)(C)C)=NC(C(C)(C)C)C(C(C)(C)C)=C12
• InChI: InChI=1S/C24H41N3O2.C23H39N3O2.C22H39N3O.C22H41N3O.C21H39N3.C21H38N2O.C20H36N2.C19H34N2/c1-22(2,3)17-18-15(26-13-10-11-16(26)20(28)29)12-14-27(18)21(24(7,8)9)25-19(17)23(4,5)6;1-21(2,3)16-17-15(25-12-14(13-25)19(27)28)10-11-26(17)20(23(7,8)9)24-18(16)22(4,5)6;1-20(2,3)16-17-15(24-12-14(26)13-24)10-11-25(17)19(22(7,8)9)23-18(16)21(4,5)6;1-20(2,3)16-17-15(24(10)13-14-26)11-12-25(17)19(22(7,8)9)23-18(16)21(4,5)6;1-19(2,3)15-16-14(23(10)11)12-13-24(16)18(21(7,8)9)22-17(15)20(4,5)6;1-18(2,3)16-15-11-14(13-24)12-23(15)17(19(4,5)6)22-21(16,10)20(7,8)9;1-17(2,3)15-14-12-11-13-22(14)16(18(4,5)6)21-20(15,10)19(7,8)9;1-17(2,3)14-13-11-10-12-21(13)16(19(7,8)9)20-15(14)18(4,5)6/h15-16,19H,10-14H2,1-9H3,(H,28,29);14-15,18H,10-13H2,1-9H3,(H,27,28);14-15,18,26H,10-13H2,1-9H3;15,18,26H,11-14H2,1-10H3;14,17H,12-13H2,1-11H3;14,24H,11-13H2,1-10H3;11-13H2,1-10H3;15H,10-12H2,1-9H3
• InChIKey: LFEUFHLNXRVCAA-UHFFFAOYSA-N
• XLogP: 37.66
• TPSA: 276.29 Ų
• H-Bond Donors: 5
• H-Bond Acceptors: 26
• Rotatable Bonds: 10
• Heavy Atoms: 200
• Complexity: —

Lipinski Rule of Five

3 violations

Rule	Value
MW ≤ 500	2781.49
LogP ≤ 5	37.66
H-Bond Donors ≤ 5	5
H-Bond Acceptors ≤ 10	26

Frequently Asked Questions

What is the IUPAC name of 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid?

The IUPAC name of 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid (CID 159333093) is 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid.

What is the SMILES notation for 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid?

The canonical SMILES for 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid is CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CC(C(=O)O)C3)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CC(O)C3)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2C(N3CCCC3C(=O)O)CCN12.CC(C)(C)C1=NC(C(C)(C)C)C(C(C)(C)C)=C2CCCN12.CC(C)(C)C1=NC(C)(C(C)(C)C)C(C(C)(C)C)=C2CC(CO)CN12.CC(C)(C)C1=NC(C)(C(C)(C)C)C(C(C)(C)C)=C2CCCN12.CN(C)C1CCN2C(C(C)(C)C)=NC(C(C)(C)C)C(C(C)(C)C)=C12.CN(CCO)C1CCN2C(C(C)(C)C)=NC(C(C)(C)C)C(C(C)(C)C)=C12.

What is the InChIKey of 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid?

The InChIKey is LFEUFHLNXRVCAA-UHFFFAOYSA-N. The full InChI is InChI=1S/C24H41N3O2.C23H39N3O2.C22H39N3O.C22H41N3O.C21H39N3.C21H38N2O.C20H36N2.C19H34N2/c1-22(2,3)17-18-15(26-13-10-11-16(26)20(28)29)12-14-27(18)21(24(7,8)9)25-19(17)23(4,5)6;1-21(2,3)16-17-15(25-12-14(13-25)19(27)28)10-11-26(17)20(23(7,8)9)24-18(16)22(4,5)6;1-20(2,3)16-17-15(24-12-14(26)13-24)10-11-25(17)19(22(7,8)9)23-18(16)21(4,5)6;1-20(2,3)16-17-15(24(10)13-14-26)11-12-25(17)19(22(7,8)9)23-18(16)21(4,5)6;1-19(2,3)15-16-14(23(10)11)12-13-24(16)18(21(7,8)9)22-17(15)20(4,5)6;1-18(2,3)16-15-11-14(13-24)12-23(15)17(19(4,5)6)22-21(16,10)20(7,8)9;1-17(2,3)15-14-12-11-13-22(14)16(18(4,5)6)21-20(15,10)19(7,8)9;1-17(2,3)14-13-11-10-12-21(13)16(19(7,8)9)20-15(14)18(4,5)6/h15-16,19H,10-14H2,1-9H3,(H,28,29);14-15,18H,10-13H2,1-9H3,(H,27,28);14-15,18,26H,10-13H2,1-9H3;15,18,26H,11-14H2,1-10H3;14,17H,12-13H2,1-11H3;14,24H,11-13H2,1-10H3;11-13H2,1-10H3;15H,10-12H2,1-9H3.

What are the key properties of 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid?

2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid has a molecular weight of 2781.49 g/mol, XLogP of 37.66, 10 rotatable bonds, 5 hydrogen bond donors, and 26 hydrogen bond acceptors.

Where does this data come from?

All data for 2-[methyl-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)amino]ethanol;1,3,4-tritert-butyl-N,N-dimethyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-amine;1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidine;(1,3,4-tritert-butyl-3-methyl-6,7-dihydro-5H-pyrrolo[1,2-c]pyrimidin-6-yl)methanol;1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidine;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidine-3-carboxylic acid;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)azetidin-3-ol;1-(1,3,4-tritert-butyl-3,5,6,7-tetrahydropyrrolo[1,2-c]pyrimidin-5-yl)pyrrolidine-2-carboxylic acid is sourced from PubChem (CID 159333093), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).