4,8-Dibromo-benzo[1,2-c;4,5-c']bis[1,2,5]thiadiazole (CAS: 165617-59-4) - 98% Purity, Monthly Capacity: 1kg

4,8-Dibromo-benzo[1,2-c;4,5-c']bis[1,2,5]thiadiazole (commonly known as BBT-Br2, CAS: 165617-59-4) is a premium, cutting-edge functional material and synthetic intermediate positioned at the cross-disciplinary frontier of modern optoelectronics and biomedicine.

• Optoelectronic and Synthetic Material Intermediates: Acts as a fundamental building block for constructing "Donor-Acceptor (D-A)" type conjugated polymers and small molecules. It is widely utilized in organic solar cells (OSCs) and organic field-effect transistors (OFETs).

• Second Near-Infrared (NIR-II) Luminescent Probes: Serves as a vital precursor for advanced NIR-II dyes, enabling the emission wavelengths of its derivatives to extend seamlessly into the highly coveted NIR-II window (1000–1700 nm).

• Photodynamic Therapy (PDT) and Bioimaging: NIR-II photodynamic dyes formulated from this core exhibit unparalleled deep tissue penetration, ultra-high signal-to-noise ratios, and exceptional singlet oxygen (\(^1\text{O}_2\)) generation efficiency. They are widely utilized in deep-seated tumor photodynamic therapy (PDT) and high-resolution in vivo fluorescence imaging (NIR-II Imaging).

• High Structural Purity (≥ 98.0%): Refined via advanced multi-stage crystallization and precision chromatography. Monobrominated impurities, over-functionalized structural defects, and trace metal ions are strictly restricted to deliver exceptionally high chemical reactivity and excellent copolymerization yields in downstream Stille, Suzuki, or Direct Arylation coupling assays.

• Stable Industrial Monthly Capacity (1kg/Month): We eliminate the market bottleneck of "unstable supply chains and minor catalog reagent constraints." Our standardized facilities guarantee a stable output of 1kg per month, supporting everything from bulk sampling to continuous commercial procurement.

• Excellent Photophysical Tuning Potential: As an exceptionally strong electron-deficient motif, it drastically narrows the bandgap of downstream molecules, acting as the ultimate core unit for designing long-wavelength, high-quantum-yield luminescent probes.

• Rigorous Quality Control (QbD): Produced under rigid quality management structures. Every single dispatch is accompanied by a thorough testing booklet comprising a COA (Certificate of Analysis), HPLC (Chemical Purity Analysis), H-NMR, and Mass Spectrometry (MS) charts for full structural traceability.

• Chemical Name: 4,8-Dibromo-benzo[1,2-c;4,5-c']bis[1,2,5]thiadiazole / BBT-Br2

• CAS Registry Number: 165617-59-4

• Functional Category: NIR-II Dye Intermediate / Organic Optoelectronic Intermediate

• Molecular Formula: C₆Br₂N₄S₂

• Molecular Weight: 352.03

• Appearance: Bright yellow, orange, to dark red powder or crystals (depending on crystal forms and purification matrices).

• Assay / Purity: ≥ 98.0% (HPLC)

• Production Capability: 1 kg / Month

• Standard Packaging: 1g/bottle, 5g/bottle, 10g/bottle, 50g/aluminum bag, 100g/light-proof fluorinated container (Customized packaging available upon request).