1. Acts 2-Bromo-9 9-dimethylfluorene CAS 28320-31-2 as a core optoelectronic material intermediate, efficiently synthesizing fluorene-based conjugated polymers for high-performance OLED and organic semiconductor device manufacturing.

2. Serves 2-Bromo-9 9-dimethylfluorene as a key building block in organic synthesis, stably preparing brominated fluorene derivatives for pharmaceutical intermediates and functional fine chemical production.

3. Functions as a fine chemical raw material, reliably fabricating hole-transport materials and photoelectric functional polymers for advanced optoelectronic material applications.

Store 2-Bromo-9 9-dimethylfluorene CAS 28320-31-2 (white crystalline powder, mp 68℃, density 1.346g/cm³, bp 190℃/2mmHg, purity ≥98%, light-sensitive) at 5–25℃ in sealed amber glass/HDPE drums in a cool, dry, dark & well-ventilated area, away from open fire, strong oxidants and direct sunlight. Wear nitrile gloves, safety goggles and dust mask; avoid dust inhalation, skin/eye contact and ingestion to prevent mild irritation. Reseal tightly post-use; dispose of waste per local fluorene fine chemical environmental regulations (avoid releasing to water).

2-Bromo-9 9-dimethylfluorene CAS 28320-31-2 is an industrial brominated fluorene heterocyclic intermediate with aquatic toxicity, strictly forbidden to release into water and direct pure-form human contact; undiluted dust may cause mild respiratory/skin irritation, and it has long-term adverse effects on aquatic organisms.

In regulated use, 2-Bromo-9 9-dimethylfluorene features high bromine substitution purity and excellent cross-coupling reactivity, good solubility in organic solvents, stable properties in sealed dark storage, and the 9,9-dimethyl structure enhances molecular steric hindrance and thermal stability for optoelectronic material synthesis.