2-Formylpyrrole, an organic compound in the pyrrole family, turns up as a building block in both lab and industrial chemistry circles. Known by the chemical name pyrrole-2-carbaldehyde, the molecular formula shows as C5H5NO, breaking down to five carbons, five hydrogens, one nitrogen, and a single oxygen atom. Chemists spot a pyrrole ring with a formyl group attached at the 2-position. HS Code for 2-Formylpyrrole circles around 29333990, placing it among the aromatic heterocyclic compounds. This code matters for customs paperwork and trade documentation, whether dealing with raw materials or finished chemical ingredients.
Cracking open a sample, 2-Formylpyrrole reveals itself as a pale yellow to brownish solid. On first inspection, most batches arrive in the lab as fine powder or crystalline flakes, though on occasion it might clump as larger crystals. Density lands around 1.19 g/cm³, denser than many common organic solids. Hold it up to the nose and a distinctive, somewhat sharp scent follows, typical of aldehydes paired with nitrogen rings. In terms of solubility, it dissolves in polar solvents like ethanol, methanol, and acetone, while water accepts it only sparingly. The melting range often starts near 62°C, which means it melts in hot rooms but sits solidly at normal temperatures. Liquefied formats don’t turn up in supply chains, as most users and handlers trade it either in powder or crystal state, given the sensitivity of aldehydes to air and moisture.
Looking at its chemical makeup, the backbone remains the aromatic pyrrole ring, which gives a certain stability thanks to its conjugated electrons, yet the formyl group stands out as reactive. That lone aldehyde group at the 2-position draws attention, making the molecule prone to nucleophilic reactions, particularly during chemical syntheses or lab-scale transformations. The backbone supports electrophilic substitution, with key roles in the preparation of dyes, pharmaceuticals, and specialty intermediates. Because of the structure, chemists avoid heating it above the melting point for long stretches, since the compound may degrade or polymerize, especially when exposed to sunlight or open air.
What sets the compound apart is not just its structure but its fit in the industry. Sourcing 2-Formylpyrrole means locking down an impactful raw material for pharmaceutical synthesis, experimental organic compounds, and chemical research settings. Its reactivity gets put to work making heterocyclic pharmaceuticals, agrochemical intermediates, and even specialty flavors and fragrances, though the last category uses it only in tightly controlled micro amounts. Able to participate in complex reactions, this material pops up on research benches and pilot plants that call for precision-moving chemical blocks.
Not everything about 2-Formylpyrrole is friendly. While it isn’t the most dangerous chemical in an organic lab, safety remains a real concern. The aldehyde group can irritate the eyes and skin, and inhaling the dust brings a risk of respiratory discomfort or sensitization. In my experience, gloves and lab coats stay on, goggles become required, and open containers stay away from the public bench to prevent accidental spills or airborne powder. Storage happens under cool, dry, and ventilated conditions, preferably in sealed amber bottles. Direct sunlight, moisture, and oxidizing conditions push the compound to break down or form harmful byproducts. Disposal as a hazardous chemical waste, rather than in general trash, aligns with its classification in most regions. Labeling must cover “harmful” warnings, as prolonged exposure could bring about organ irritation or long-term health effects.
Regulators, suppliers, and customs officers look at HS Code, density information, and material format—powder, crystalline flakes, or solid chunks—on shipping documents. The specification sheets typically offer precise weight per unit, purity percentages (often above 98% for industrial grade), CAS number (since anyone in procurement needs quick reference), and safety phrasing. Those unaware of the chemical may overlook its sensitivity to light and oxidation. Regulatory routes reflect its low explosive or flammable potential, but correct labeling persists—incorrectly classified shipments can result in customs holds or fines. Knowing its unique identifiers, structural diagrams, and key hazard symbols keeps this compound moving safely in supply chains and research applications alike, without exposing handlers to avoidable risks.
