C5H9NO
99.13 g/mol
Industrial ChemicalDanger
1-METHYL-2-PYRROLIDINONE
CAS872-50-4EC212-828-1
Category
Industrial Chemical
Compound Class
Amide
Primary Use
solvent for resins and acetylene
1-Methyl-2-pyrrolidinone (NMP) is an organic compound that is a colorless liquid, miscible with water and many organic solvents. It is primarily used as a solvent for resins and acetylene.
solvent for resinssolvent for acetylene
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 872-50-4
Related Compounds
StrongSame Parent
1-methyl-2-pyrrolidinone
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Industrial solvent
SimilarStructure SimilarSimilarity 0.80
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preservative and antioxidant intermediate
Safety Reference
Danger
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H360May damage fertility or the unborn child
H227
H336May cause drowsiness or dizziness
H373May cause damage to organs through prolonged or repeated exposure
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for 1-METHYL-2-PYRROLIDINONE (CAS 872-50-4) is 2939.79.
HS code (international, 6-digit)
2939.79
EU CN code (8-digit)
2939 79 90
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
1-methylpyrrolidin-2-one
InChIKey
SECXISVLQFMRJM-UHFFFAOYSA-N
SMILES
CN1CCCC1=O
Synonyms (90)
- NMP
- Methylpyrrolidone, United States Pharmacopeia (USP)
- 1-METHYL-2-PYRROLIDINONE
- 1-Methyl-2- pyrrolidin-2-one
- 1-Methyl-2-pyrrolidone
- 1-Methyl-5-pyrrolidinone
- 1-Methylazacyclopentan-2-one
- 1-Methylazacyclopentane-2-one
- 1-Methylpyrrolidinone
- 1-Methylpyrrolidone
- 1-N-methyl-2-pyrrolidinone
- 1-methy-2-pyrrolidinone
- 1-methyl-2-pirrolidone
- 1-methyl-2-pyroldinone
- 1-methyl-2-pyrolidinone
- 1-methyl-2-pyrolidone
- 1-methyl-2-pyrollidinone
- 1-methyl-2-pyrrolidon
- 1-methyl-pyrrolin-2-one
- 1-methylpyrolidinone
- 1-methylpyrrolid-2-one
- 1-methylpyrrolidin-2-one
- 1-methylpyrrolidine-2-one
- 2-Pyrrolidinone, 1-methyl-
- 2-Pyrrolidinone, methyl-
- 2-Pyrrolidone, 1-methyl-
- 3p1d
- Agsolex 1
- M-Pyrol
- Max-1 peptide
- Methylpyrrolidinone
- Methylpyrrolidone
- Methylpyrrolidone, N-
- Microposit 2001
- Micropure ultra
- N-METHYLPYRROLIDONE [MART.]
- N-Methyl-2-pyrrolidinone
- N-Methyl-2-pyrrolidon
- N-Methyl-2-pyrrolidone
- N-Methyl-alpha-pyrrolidinone
- N-Methyl-alpha-pyrrolidone
- N-Methyl-gamma-butyrolactam
- N-Methylpyrrolid-2-one
- N-Methylpyrrolidinone
- N-Methylpyrrolidon
- N-Methylpyrrolidone
- N-Methylpyrrolidone-(2)
- N-methlypyrrolidinone
- N-methy pyrrolidinone
- N-methy-2-pyrrolidone
- N-methyl 2-pyrolidone
- N-methyl pyrollidone
- N-methyl-2-pyrolidinone
- N-methyl-2-pyrollidinone
- N-methyl-2-pyrollidone
- N-methyl-2-pyrrolidinon
- N-methylpirrolidone
- N-methylpyrolidin-2-one
- N-methylpyrolidinone
- N-methylpyrolidone
- N-methylpyrollidin-2-one
- N-methylpyrrolidin-2-one
- N-methypyrrolidone
- Piracetam Impurity 5
- Pyrol M
- Pyrrolidinone, methyl-
- n-methylpyrollidinone
- n-methylpyrrolidine-2one
- pharmasolve
- pyrrolidine, N-methyl-2-oxo-