C8H9NO4
183.16 g/mol
Research ReagentWarning
4-Maleimidobutyric acid
CAS57078-98-5EC611-461-8
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
4-Maleimidobutyric acid is a compound containing a maleimide group and a carboxylic acid, used as a crosslinking reagent in bioconjugation research. It is characterized by its ability to form stable thioether bonds with thiol groups, making it valuable for modifying proteins and other biomolecules.
Crosslinking reagent for bioconjugationLaboratory reagent for protein modification
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Maleimidobutyric acid (CAS 57078-98-5) is 2925.19.
HS code (international, 6-digit)
2925.19
EU CN code (8-digit)
2925 19 95
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
4-(2,5-dioxopyrrol-1-yl)butanoic acid
InChIKey
NCPQROHLJFARLL-UHFFFAOYSA-N
SMILES
C1=CC(=O)N(C1=O)CCCC(=O)O
Synonyms (17)
- 4-Maleimidobutyric acid
- Mal-(CH2)3-COOH
- Maleimide-(CH2)3-COOH
- N-(3-Carboxypropyl)maleimide
- gamma-Maleimidobutyric acid
- omega-maleimidobutyric acid
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