XL-223

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

MedKoo CAT#: 462234

CAS#: 2344825-52-9

Description: XL-223, also known as XP-524, is a potent BET inhibitor effective in endocrine-resistant ER+ breast cancer with acquired resistance to fulvestrant and palbociclib. XL-223 was more potent in MCF-7:CFR cells than six BET inhibitors in clinical trials. Transcriptomic analysis differentiated XL-223 from the benchmark BETi, JQ-1, showing downregulation of oncogenes and upregulation of tumor suppressors and apoptosis. The therapeutic approach was validated by oral administration of XL-223 in orthotopic xenografts of endocrine-resistant breast cancer in monotherapy and in combination with fulvestrant. Importantly, at an equivalent dose in rats, thrombocytopenia was mitigated.


Chemical Structure

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XL-223
CAS# 2344825-52-9

Theoretical Analysis

MedKoo Cat#: 462234
Name: XL-223
CAS#: 2344825-52-9
Chemical Formula: C30H28N6O3S
Exact Mass: 552.19
Molecular Weight: 552.653
Elemental Analysis: C, 65.20; H, 5.11; N, 15.21; O, 8.68; S, 5.80

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: XL-223; XL223; XL 223; XP-524; XP524; XP 524;

IUPAC/Chemical Name: N-(1-(1,1-di(pyridin-2-yl)ethyl)-6-(1-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-3-yl)-1H-indol-4-yl)ethanesulfonamide

InChi Key: LMLIBNUOIWAJFC-UHFFFAOYSA-N

InChi Code: InChI=1S/C30H28N6O3S/c1-4-40(38,39)34-24-17-20(23-19-35(3)28-21(23)11-15-33-29(28)37)18-25-22(24)12-16-36(25)30(2,26-9-5-7-13-31-26)27-10-6-8-14-32-27/h5-19,34H,4H2,1-3H3,(H,33,37)

SMILES Code: O=C1C2=C(C(C3=CC4=C(C=CN4C(C5=NC=CC=C5)(C)C6=NC=CC=C6)C(NS(CC)(=O)=O)=C3)=CN2C)C=CN1

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

Shelf Life: >3 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

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 552.65 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
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Li Y, Zhao J, Gutgesell LM, et al. Novel Pyrrolopyridone Bromodomain and Extra-Terminal Motif (BET) Inhibitors Effective in Endocrine-Resistant ER+ Breast Cancer with Acquired Resistance to Fulvestrant and Palbociclib [published online ahead of print, 2020 Jun 15]. J Med Chem. 2020;10.1021/acs.jmedchem.0c00456. doi:10.1021/acs.jmedchem.0c00456