Pyrrole [109-97-7] is applied in various analytical and synthetic procedures as it belongs to the Nitrogen heterocycles class with a molecular formula of C4H5N and a Molecular Weight of 67.09 g/mol. It exhibits a Boiling Point of 129.7 °C and a Melting Point of -23.4 °C. A Warning label is required due to its flammability.

• CAS Number: 109-97-7
• Molecular Formula: C4H5N
• GHS Signal Word: Warning
• Exact Mass: 67.042199164
• Boiling Point: 129.7 °C
• Vapour Density: 2.31
• Melting Point: -23.4 °C
• Molecular Weight: 67.09
• Hazard Statements:
• H226: Flammable liquid and vapor [Warning Flammable liquids]