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

MedKoo CAT#: 407123

CAS#: 1431727-04-6

Description: PLS-123 is a novel covalent irreversible Btk inhibitor with potential anti-proliferative activity. PLS-123 exhibited more potent anti-proliferative effects than ibrutinib in multiple cellular and in vivo preclinical models of B-cell lineage malignancy, including 14 kinds of cell lines, patients’ primary tumor cells and mouse xenograft model.

Chemical Structure

CAS# 1431727-04-6

Theoretical Analysis

MedKoo Cat#: 407123
Name: PLS-123
CAS#: 1431727-04-6
Chemical Formula: C31H26F3N7O4
Exact Mass: 617.19984
Molecular Weight: 617.59
Elemental Analysis: C, 60.29; H, 4.24; F, 9.23; N, 15.88; O, 10.36

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Synonym: PLS-123; PLS 123; PLS123.

IUPAC/Chemical Name: N-(2-((3-(2-acrylamidoacetamido)phenyl)amino)pyrimidin-5-yl)-2-methyl-5-(3-(trifluoromethyl)benzamido)benzamide


InChi Code: InChI=1S/C31H26F3N7O4/c1-3-26(42)35-17-27(43)38-21-8-5-9-22(13-21)41-30-36-15-24(16-37-30)40-29(45)25-14-23(11-10-18(25)2)39-28(44)19-6-4-7-20(12-19)31(32,33)34/h3-16H,1,17H2,2H3,(H,35,42)(H,38,43)(H,39,44)(H,40,45)(H,36,37,41)


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

Preparing Stock Solutions

The following data is based on the product molecular weight 617.59 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: Ding N, Li X, Shi Y, Ping L, Wu L, Fu K, Feng L, Zheng X, Song Y, Pan Z, Zhu J. Irreversible dual inhibitory mode: the novel Btk inhibitor PLS-123 demonstrates promising anti-tumor activity in human B-cell lymphoma. Oncotarget. 2015 Jun 20;6(17):15122-36. PubMed PMID: 25944695.


10.0mg / Not available