7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one

C117H121F3N40O5 — CID 160973525

About 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one

7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one (PubChem CID 160973525) has the molecular formula C117H121F3N40O5 and a molecular weight of 2224.52 g/mol. Its IUPAC name is 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one.

Molecular Properties

• Compound Name: 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one
• PubChem CID: 160973525
• Molecular Formula: C117H121F3N40O5
• Molecular Weight: 2224.52 g/mol
• Exact Mass: 2223.04
• IUPAC Name: 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one
• SMILES: C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)c(C#N)c(N[C@@H](C)C3CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)c(C#N)c(N[C@H](C)C3CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4ccc(C#N)cn4)CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4cccc(C(F)(F)F)n4)CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4ncccc4C#N)CC3)nc12
• InChI: InChI=1S/C25H25F3N8O.2C25H25N9O.2C21H23N7O/c1-15-16(12-23(37)30-15)11-17-14-29-36-22(31-18-5-6-18)13-21(33-24(17)36)35-9-7-34(8-10-35)20-4-2-3-19(32-20)25(26,27)28;1-16-18(11-24(35)29-16)10-19-15-28-34-23(30-20-3-4-20)12-22(31-25(19)34)33-8-6-32(7-9-33)21-5-2-17(13-26)14-27-21;1-16-18(12-23(35)29-16)11-19-15-28-34-22(30-20-4-5-20)13-21(31-25(19)34)32-7-9-33(10-8-32)24-17(14-26)3-2-6-27-24;2*1-11(13-3-4-13)25-19-17(9-22)21(26-16-5-6-16)28-20(27-19)15(10-23-28)7-14-8-18(29)24-12(14)2/h2-4,11,13-14,18,31H,1,5-10,12H2,(H,30,37);2,5,10,12,14-15,20,30H,1,3-4,6-9,11H2,(H,29,35);2-3,6,11,13,15,20,30H,1,4-5,7-10,12H2,(H,29,35);2*7,10-11,13,16,26H,2-6,8H2,1H3,(H,24,29)(H,25,27)/b16-11+;18-10+;18-11+;2*14-7+/t;;;2*11-/m...10/s1
• InChIKey: SYOIWYQTDWYFHL-YIAHFJKXSA-N
• XLogP: 13.69
• TPSA: 533.93 Ų
• H-Bond Donors: 12
• H-Bond Acceptors: 40
• Rotatable Bonds: 27
• Heavy Atoms: 165
• Complexity: —

Lipinski Rule of Five

4 violations

Rule	Value
MW ≤ 500	2224.52
LogP ≤ 5	13.69
H-Bond Donors ≤ 5	12
H-Bond Acceptors ≤ 10	40

Frequently Asked Questions

What is the IUPAC name of 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one?

The IUPAC name of 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one (CID 160973525) is 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one.

What is the SMILES notation for 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one?

The canonical SMILES for 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one is C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)c(C#N)c(N[C@@H](C)C3CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)c(C#N)c(N[C@H](C)C3CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4ccc(C#N)cn4)CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4cccc(C(F)(F)F)n4)CC3)nc12.C=C1NC(=O)C/C1=C\c1cnn2c(NC3CC3)cc(N3CCN(c4ncccc4C#N)CC3)nc12.

What is the InChIKey of 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one?

The InChIKey is SYOIWYQTDWYFHL-YIAHFJKXSA-N. The full InChI is InChI=1S/C25H25F3N8O.2C25H25N9O.2C21H23N7O/c1-15-16(12-23(37)30-15)11-17-14-29-36-22(31-18-5-6-18)13-21(33-24(17)36)35-9-7-34(8-10-35)20-4-2-3-19(32-20)25(26,27)28;1-16-18(11-24(35)29-16)10-19-15-28-34-23(30-20-3-4-20)12-22(31-25(19)34)33-8-6-32(7-9-33)21-5-2-17(13-26)14-27-21;1-16-18(12-23(35)29-16)11-19-15-28-34-22(30-20-4-5-20)13-21(31-25(19)34)32-7-9-33(10-8-32)24-17(14-26)3-2-6-27-24;2*1-11(13-3-4-13)25-19-17(9-22)21(26-16-5-6-16)28-20(27-19)15(10-23-28)7-14-8-18(29)24-12(14)2/h2-4,11,13-14,18,31H,1,5-10,12H2,(H,30,37);2,5,10,12,14-15,20,30H,1,3-4,6-9,11H2,(H,29,35);2-3,6,11,13,15,20,30H,1,4-5,7-10,12H2,(H,29,35);2*7,10-11,13,16,26H,2-6,8H2,1H3,(H,24,29)(H,25,27)/b16-11+;18-10+;18-11+;2*14-7+/t;;;2*11-/m...10/s1.

What are the key properties of 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one?

7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one has a molecular weight of 2224.52 g/mol, XLogP of 13.69, 27 rotatable bonds, 12 hydrogen bond donors, and 40 hydrogen bond acceptors.

Where does this data come from?

All data for 7-(cyclopropylamino)-5-[[(1R)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;7-(cyclopropylamino)-5-[[(1S)-1-cyclopropylethyl]amino]-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;2-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;6-[4-[7-(cyclopropylamino)-3-[(E)-(2-methylidene-5-oxopyrrolidin-3-ylidene)methyl]pyrazolo[1,5-a]pyrimidin-5-yl]piperazin-1-yl]pyridine-3-carbonitrile;(4E)-4-[[7-(cyclopropylamino)-5-[4-[6-(trifluoromethyl)-2-pyridinyl]piperazin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-5-methylidenepyrrolidin-2-one is sourced from PubChem (CID 160973525), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).