Chemical substance record

PJ34

344458-19-1C₁₇H₁₇N₃O₂295.342 g/mol

Organic/Inorganic Small MoleculeChEBI source record

A member of the class of phenanthridines that is 5,6-dihydrophenanthridine substituted at positions 2 and 6 by (N,N-dimethylglycyl)amino and oxo groups, respectively. It is a potent inhibitor of poly(ADP-ribose) polymerases PARP1 and PARP2 (IC50 of 110 nM and 86 nM, respectively) and exhibits anti-cancer, cardioprotective and neuroprotective properties. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values

CAS number	344458-19-1	ChEBI ↗
Molecular formula	C₁₇H₁₇N₃O₂	ChEBI ↗
Molar mass	295.342 g/mol	ChEBI ↗
Monoisotopic mass	295.13208 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:167900	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	295.34 g/mol	PubChem ↗
Exact mass	295.132076794 Da	PubChem ↗
Computed XLogP	1.7	PubChem ↗
Topological polar surface area (Å²)	61.4	PubChem ↗
H-bond donors	2	PubChem ↗
H-bond acceptors	3	PubChem ↗
Rotatable bonds	3	PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

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Source preferred name

PJ34

IUPAC name

2-(dimethylamino)-N-(6-oxo-5,6-dihydrophenanthridin-2-yl)acetamide

InChIKey

UYJZZVDLGDDTCL-UHFFFAOYSA-N

SMILES

CN(C)CC(=O)Nc1ccc2nc(=O)c3ccccc3c2c1

InChI

InChI=1S/C17H17N3O2/c1-20(2)10-16(21)18-11-7-8-15-14(9-11)12-5-3-4-6-13(12)17(22)19-15/h3-9H,10H2,1-2H3,(H,18,21)(H,19,22)

Names & synonyms

2-(dimethylamino)-N-(6-oxo-5,6-dihydrophenanthridin-2-yl)acetamide

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

secondary carboxamideChEBI parent class · 140325 ↗tertiary amino compoundChEBI parent class · 50996 ↗phenanthridinesChEBI parent class · 51245 ↗

organic heterocyclic compound organic molecular entity

Roles recorded in ChEBI

antiatherosclerotic agentantineoplastic agentangiogenesis inhibitorEC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitorneuroprotective agentanti-inflammatory agentapoptosis inducercardioprotective agent

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass

Amount

Input unit

Equivalent amount

0.00338591 mol

Uses 295.342 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

C

Carbon · 17 atoms

69.14%

N

Nitrogen · 3 atoms

14.23%

O

Oxygen · 2 atoms

10.83%

H

Hydrogen · 17 atoms

5.80%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations

Protective effects of PJ34, a novel, potent inhibitor of poly(ADP-ribose) polymerase (PARP) in in vitro and in vivo models of stroke. ↗International journal of molecular medicine · 2001 Mar · PMID 11179503

Myocardial protection by PJ34, a novel potent poly (ADP-ribose) synthetase inhibitor. ↗The Annals of thoracic surgery · 2002 Feb · PMID 11845877

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Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:167900

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

Additional molecular descriptorsNCBI PubChem · CID 4858 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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