Skip to content
Molekula

Molekula

4-Maleimidobutyric acid

SKU 59031729 CAS 57078-98-5 C8H9NO4 MW 183.16 Available on enquiry

Supplying 4,500+ customers in over 80 countries

ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch

4-Maleimidobutyric acid is an organic compound featuring a maleimide group, widely used in bioconjugation, peptide synthesis, and polymer chemistry for crosslinking proteins, antibodies, and other biomolecules. It enables site-specific modifications via thiol-maleimide reactions, ideal for drug development and diagnostic assays. Catalogue details: CAS 57078-98-5, molecular formula C8H9NO4, molecular weight 183.16 g/mol. Store at 2–8°C. Hazard classification: Warning (irritant, may cause skin/eye irritation). Molekula supplies 4-Maleimidobutyric acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.

Contact sales
Expect a response within hours Speak to a chemist: +44 (0) 3302 000333

Overview

SKU
59031729
CAS Number
57078-98-5
IUPAC Name
4-(2,5-dioxopyrrol-1-yl)butanoic acid
Molecular Formula
C8H9NO4
Molecular Weight
183.16
Exact Mass
183.0532
SMILES
C1=CC(=O)N(C1=O)CCCC(=O)O
InChIKey
NCPQROHLJFARLL-UHFFFAOYSA-N
InChI
InChI=1S/C8H9NO4/c10-6-3-4-7(11)9(6)5-1-2-8(12)13/h3-4H,1-2,5H2,(H,12,13)
PubChem CID
3404904

Synonyms

  • 1H-Pyrrole-1-butanoic acid, 2,5-dihydro-2,5-dioxo-
  • 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)butanoic acid
  • 4-(2,5-dioxo-2H-pyrrol-1(5H)-yl)butanoic acid
  • 4-(2,5-dioxopyrrol-1-yl)butanoic Acid
  • 4-Maleim
  • gamma-Maleimidobutyric acid
  • Maleimide-(CH2)3-COOH
  • N-(3-Carboxypropyl)maleimide
  • N-Maleoyl-GABA
  • omega-maleimidobutyric acid

Frequently asked questions

What is 4-Maleimidobutyric acid (CAS 57078-98-5) commonly used for?

It is primarily used in bioconjugation chemistry for linking proteins, peptides, or other biomolecules via maleimide-thiol coupling, often in antibody-drug conjugates (ADCs) and protein labeling.

What is the molecular formula and molecular weight of 4-Maleimidobutyric acid?

The molecular formula is **C₈H₉NO₄**, and the molecular weight is **183.16 g/mol**.

How should 4-Maleimidobutyric acid be stored?

Store at **2–8°C** in a dry, well-ventilated area, protected from light and moisture. Avoid prolonged exposure to air.

What purity grades are available for this product?

We supply **analytical grade (≥98% purity)** and **bioconjugation grade (≥99% purity)** for sensitive biochemical applications.

Can Molekula supply 4-Maleimidobutyric acid in bulk quantities?

Yes, we offer bulk packaging (5g–1kg) for large-scale applications, with custom quantities available upon request.

What documentation comes with an order of 4-Maleimidobutyric acid?

Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.

Related products

Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.

Request a quote
Tell us the product and the quantity you need — including quantities larger than our listed packs. Expect a response within hours.
Full name
Company
Email
Phone (optional)
Product
Quantity needed

Ask for whatever you actually need — the pack sizes on our catalogue pages are a starting point, not a limit.

Message
View basket