Br-C3-methyl ester


Catalog No. Size 价格库存数量
S1178-2 2mg solid ¥80
S1178-10 10mg solid ¥240


Br-C3-methyl ester is a Alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTAC PD-1/PD-L1 degrader-1 (HY-131183).

Product information

CAS Number: 4897-84-1

Molecular Weight: 181.03

Formula: C5H9BrO2

Chemical Name: methyl 4-bromobutanoate

Smiles: COC(=O)CCCBr


InChi: InChI=1S/C5H9BrO2/c1-8-5(7)3-2-4-6/h2-4H2,1H3

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: ≥360 days 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:

PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.


  1. Binbin Cheng, et al. Discovery of novel resorcinol diphenyl ether-based PROTAC-like molecules as dual inhibitors and degraders of PD-L1. Eur J Med Chem. 2020;199:112377.

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


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