WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 205882

CAS#: 1140964-99-3

Description: E7449, also known as 2X-121, is an orally available small molecule inhibitor of the nuclear enzymes poly (ADP-ribose) polymerase (PARP) 1 and 2, with potential antineoplastic activity. Upon administration, E7449 selectively binds to PARP 1 and 2, thereby preventing the repair of damaged DNA via the base excision repair (BER) pathway. This agent enhances the accumulation of single and double strand DNA breaks and promotes genomic instability eventually leading to apoptosis. PARP 1/2 inhibitor E7449 may enhance the cytotoxicity of DNA-damaging agents and of radiotherapy. PARP catalyzes post-translational ADP-ribosylation of nuclear proteins that signal and recruit other proteins to repair damaged DNA.

Chemical Structure

CAS# 1140964-99-3

Theoretical Analysis

MedKoo Cat#: 205882
Name: E7449
CAS#: 1140964-99-3
Chemical Formula: C18H15N5O
Exact Mass: 317.12766
Molecular Weight: 317.34
Elemental Analysis: C, 68.13; H, 4.76; N, 22.07; O, 5.04

Price and Availability

Size Price Availability Quantity
25.0mg USD 250.0 2 Weeks
50.0mg USD 450.0 2 Weeks
100.0mg USD 750.0 2 Weeks
200.0mg USD 1250.0 2 Weeks
500.0mg USD 2150.0 2 Weeks
1.0g USD 3250.0 2 Weeks
2.0g USD 5450.0 2 Weeks
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Synonym: E7449; E 7449; E-7449; 2X-121; 2X 121; 2X121;

IUPAC/Chemical Name: 8-(isoindolin-2-ylmethyl)-2H-pyridazino[3,4,5-de]quinazolin-3(9H)-one


InChi Code: InChI=1S/C18H15N5O/c24-18-13-6-3-7-14-16(13)17(21-22-18)20-15(19-14)10-23-8-11-4-1-2-5-12(11)9-23/h1-7H,8-10H2,(H,22,24)(H,19,20,21)

SMILES Code: O=C1NN=C(N2)C3=C(C=CC=C31)N=C2CN(C4)CC5=C4C=CC=C5

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Certificate of Analysis:

Safety Data Sheet (SDS):

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 0.2 0.63

Preparing Stock Solutions

The following data is based on the product molecular weight 317.34 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Laurance J. Neurologists appeal to health secretary over withdrawal of drug for MS patients. BMJ. 2012 Nov 2;345:e7449. doi: 10.1136/bmj.e7449. PubMed PMID: 23125160.

2: Gilmore S, Hofmann-Wellenhof R, Muir J, Soyer HP. Lacunarity analysis: a promising method for the automated assessment of melanocytic naevi and melanoma. PLoS One. 2009 Oct 13;4(10):e7449. doi: 10.1371/journal.pone.0007449. PubMed PMID: 19823688; PubMed Central PMCID: PMC2758593.


25.0mg / USD 250.0

Additional Information