4-Chloro-9H-carbazole (CAS 3652-88-8)

Application and positioning

4-Chlorocarbazole is the scarcest of the mono-chloro isomers, used when the 4-position must stay open while the nitrogen is functionalised first. It is supplied in small lots for medicinal chemistry and materials screening rather than tonne-scale use. Laurand supplies it from audited Chinese producers in kilogram to multi-hundred-kilogram lots, with the documentation your market requires.

Quality and documentation

• Batch-specific Certificate of Analysis with HPLC or GC purity and a full impurity profile
• Trace metal report (Pd, Fe, Cu) on request — residual catalyst is what limits OLED device lifetime
• Water content by Karl Fischer and residual solvent data for solution-processed grades
• SDS in the language of your market, with GHS classification for the destination
• Pre-shipment sample for laboratory approval on first orders

Packaging and handling

• 1 kg, 5 kg and 25 kg fibre drums with inner PE liner; amber glass bottles for gram to kilogram quantities on request
• Sealed and protected from light — carbazoles discolour under prolonged UV exposure
• Store at ambient temperature in a dry, dark warehouse, away from strong oxidising agents

Related products

• 5-phenyl-5,7-dihydroindolo[2,3-b]carbazole (CAS 1448296-00-1)
• 7,7-dimethyl-5,7-dihydroindeno[2,1-b]carbazole (CAS 1260228-95-2)
• 7H-benzo[c]carbazole (CAS 205-25-4)
• 9-([1,1′-biphenyl]-4-yl)-2-bromo-9H-carbazole (CAS 894791-46-9)

Values marked (predicted) are calculated estimates; the remaining data are published literature values. The specification of the delivered lot is confirmed with the quotation.