Catalog No. size PriceQuantity
M6590-2 2mg solid $101
M6590-10 10mg solid $411


Madrasin is a potent and cell penetrant splicing inhibitor that interferes with the early stages of spliceosome assembly. Madrasin stalls spliceosome assembly at the A complex.

Product information

CAS Number: 374913-63-0

Molecular Weight: 311.34

Formula: C16H17N5O2



RNA splicing inhibitor


Chemical Name: 2-((7-Methoxy-4-methylquinazolin-2-yl)amino)-5,6-dimethylpyrimidin-4(3H)-one

Smiles: COC1=CC2=NC(NC3NC(=O)C(C)=C(C)N=3)=NC(C)=C2C=C1


InChi: InChI=1S/C16H17N5O2/c1-8-9(2)17-16(20-14(8)22)21-15-18-10(3)12-6-5-11(23-4)7-13(12)19-15/h5-7H,1-4H3,(H2,17,18,19,20,21,22)

Technical Data

Appearance: Solid Power

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

Solubility: Soluble in DMSO

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

Madrasin (10-30 μM; 4-24 hours; HeLa cells) treatment inhibits the splicing of each of the RIOK3, BRD2, and Hsp40, MCL1, CCNA2, AURKA and p27 pre-mRNAs in both HeLa and HEK293 cells. Madrasin (10-30 μM; 4-24 hours; HeLa and HEK293 cells) treatment shows a dose- and time-dependent inhibitory effect on cell cycle progression.


  1. Andrea Pawellek et al. Identification of Small Molecule Inhibitors of Pre-mRNA Splicing. J Biol Chem, 2014 Dec 12, 289(50): 34683-34698.

Products are for research use only. Not for human use.

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