C4H5N
67.09 g/mol
Industrial ChemicalWarning
PYRROLE
CAS109-97-7EC203-724-7
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
Intermediate for pharmaceuticals, dyes, herbicides, and perfumes
Pyrrole is a volatile organic compound with a five-membered ring structure. It darkens upon exposure to air and serves as a key building block in the synthesis of various industrial chemicals.
intermediate for pharmaceuticalsintermediate for dyesintermediate for herbicides and perfumes
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
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Industrial chemical intermediate
Safety Reference
Warning
H226Flammable liquid and vapour
H302Harmful if swallowed
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for PYRROLE (CAS 109-97-7) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
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
1H-pyrrole
InChIKey
KAESVJOAVNADME-UHFFFAOYSA-N
SMILES
C1=CNC=C1
Synonyms (24)
- PYROLLE
- PYRROLE
- (1H-Pyrrole)x
- 1-Aza-2,4-cyclopentadiene
- 1-aza-cyclopentadiene
- 1H-Pyrrole
- Azole
- Divinyleneimine
- Divinylenimine
- FEMA 3386
- Imidole
- Monopyrrole
- PolypyrrolePPy
- Pyrole
- Pyrrhol
- Pyrrol
- Pyrrole 1539
- Pyrrole, Reagent
- Pyrrole, reagent grade
- Pyrroles
- QSPL 001
- a pyrrole
- beta-pyrrole
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