Indolo 2 3 a carbazole CAS 60511-85-5 Purity 99 percent White to Light Yellow Powder to Crystal OLED Material Pharma Intermediate Heterocyclic Buildin

1. Product Overview

Indolo[2,3-a]carbazole, CAS 60511-85-5, also known as 11,12-dihydroindolo[2,3-a]carbazole or Indolo[2,3-alpha]carbazole, is a fused heterocyclic compound with molecular formula C18H12N2 and MW 256.30 g/mol. It appears as white to light yellow or off-white powder to crystal at room temperature, melting point approximately 371 degrees Celsius (lit.), insoluble in water, soluble in DMSO, hot DMF and pyridine. The structure contains two fused indole units bridged by a carbazole core, giving strong fluorescence with max absorption at 357 nm in ethanol. This compound is a key pharmaceutical intermediate for anticancer agent scaffolds and a critical OLED material precursor for thermally activated delayed fluorescence emitters and host layers. Stable at room temperature under dry sealed conditions; store cool dark place.

2. Key Features and Advantages

• OLED-Ready Heterocycle — Favorable photophysics and rigid planar structure enable TADF-OLED host emitter synthesis; high-purity grades for display/material R&D.

• Pharma Scaffold — Core for indolocarbazole-based anticancer leads (protein kinase C modulators, glioblastoma agents); 11,12-dihydro form allows N–H functionalization.

• High Thermal Stability — mp 371 °C, stable up to >300 °C, suitable for vacuum deposition in organic electronics.

• Grade Flexibility — Reagent 98–99% HPLC for research; electronic grade 99%+ for OLED; pharma intermediate 98–99% non-GMP on custom.

3. Main Applications

Used in heterocyclic/OLED/pharma sectors: OLED Materials (precursor to TADF emitters and host layers, thermally stable carbazole derivatives for displays and lighting); Pharmaceutical Intermediates (indolocarbazole scaffold for PKC inhibitors, anticancer drug candidates, serine/threonine kinase targets); Organic Electronics (hole-transport material precursor, organic semiconductor building block for OFET/OLED); Medicinal Chemistry (11,12-dihydroindolo[2,3-a]carbazole for N-alkylation/arylation to bioactive analogs); Custom Synthesis (mg–kg scale heterocycles for CRO/CDMO/OLED R&D, inquire-only; also fluorescent probe standard).

4. Technical Specifications

5. Storage and Handling

• Storage Conditions: Store in a cool, dry, dark place sealed under inert atmosphere N2 or Ar. Recommended: room temperature in cool dark cabinet (<25°C, <60% RH); for reagent long-term 2–8°C desiccated amber vials. Electronic grade in double-bagged aluminum pouches with desiccant.

• Packaging Options: Reagent: 100 mg / 200 mg / 1 g / 5 g / 25 g glass vials; Bulk: 100 g / 500 g / 1 kg / 5 kg / 25 kg foil-pouched aluminum bag with PE inner; OLED grade: 100 g / 500 g / 1 kg under argon.

• Shelf Life: ≥24 months unopened at RT sealed dry; reseal tightly after opening.

• Handling Precautions: Handle in fume hood with gloves and goggles; avoid dust inhalation; keep dry. Incompatible with strong oxidizers, acids causing decomposition at high T.

6. Safety Overview

GHS pictograms GHS07 Exclamation. Signal Word Warning. Hazard statements H315 causes skin irritation, H319 causes eye irritation, H317 may cause allergic skin reaction. Precautionary P261 P280 P302+P352 P305+P351+P338. Irritant to skin/eyes/respiratory; not acutely toxic but treat as fine organic dust. Transport not DG in small packs; bulk may be UN 1325 Flammable Solid Organic n.o.s. PG III. WGK Germany 3. Customs 2933998290 heterocyclic. For research/OLED/pharma intermediate only; dispose as organic irritant hazardous waste. Skin: wash soap/water; eyes: rinse 15 min + medical aid.