C4H7NO
85.1 g/mol
Industrial ChemicalDanger
2-Pyrrolidinone
CAS616-45-5EC210-483-1
Category
Industrial Chemical
Compound Class
Amide
Primary Use
Solvent and monomer for copolymers
2-Pyrrolidinone is a cyclic amide (lactam) used primarily as a solvent and monomer for copolymers. It serves as a chemical intermediate for N-vinyl-2-pyrrolidone and nylon 4 fibers, and is also employed in pharmaceutical preparations.
Solvent for various chemical processesMonomer for copolymers with vinyl compoundsChemical intermediate for N-vinyl-2-pyrrolidone
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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Related Compounds
SimilarStructure SimilarSimilarity 0.82
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Dimethyl itaconate
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chemical intermediate
Referencestereoisomer of
2-PYRROLIDINONE-3,3,4,4,5,5-D6
CAS70607-84-0
research compound
Safety Reference
Danger
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
H360May damage fertility or the unborn child
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2-Pyrrolidinone (CAS 616-45-5) is 2933.79.
HS code (international, 6-digit)
2933.79
EU CN code (8-digit)
2933 79 00
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
pyrrolidin-2-one
InChIKey
HNJBEVLQSNELDL-UHFFFAOYSA-N
SMILES
C1CC(=O)NC1
Synonyms (51)
- 2-P
- Piracetam EP Impurity A
- Pyrrolidone, European Pharmacopoeia (EP)
- 1-azacyclopentan-2-one
- 2-Azacyclopentanone
- 2-Ketopyrrolidine
- 2-Oxo-4-butyrolactam
- 2-Oxopyrrolidine
- 2-PYRROLIDONE
- 2-PYRROLIDONE MFC4 H7 N1 O1
- 2-Pyrol
- 2-Pyrrolidinone
- 2-Pyrrolidone-Butyrolactam
- 2-Tetrahydropyrrolone
- 2-pyrolidinone
- 2-pyrollidinone
- 2-pyrrolidinon
- 2-pyrrolidone for synthesis
- 4-Aminobutyric acid lactam
- Aminobutyric acid lactam
- Aminobutyric lactam
- Aminobutyrolactam
- Butanoic acid, lactam
- Butyrolactam
- COPOVIDONE IMPURITY A
- MELAO Tea TreeShampoo
- POVIDONE IMPURITY B
- PYRROLIDINONE
- PYRROLIDONE [MART.]
- Pyrrolidon
- Pyrrolidon [German]
- Pyrrolidone
- Pyrrolidone CRS
- Soluphor P
- Tetrahydropyrrolone
- a-pyrrolidone
- alpha-Pyrrolidinone
- alpha-Pyrrolidone
- butyrolactim
- gamma-Aminobutyric lactam
- gamma-Aminobutyrolactam
- gamma-Butyrolactam
- pyrollidone
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