In the specialized world of chemical procurement for advanced industries like organic electronics, understanding product specifications is not just important—it's critical. For professionals looking to buy intermediates such as 5-Bromo-2-(5-bromothiophen-2-yl)pyridine (CAS: 136902-53-9), a clear grasp of its technical details ensures successful application in their R&D or manufacturing processes.

Let's break down the key specifications commonly provided by reputable manufacturers and suppliers:

1. Chemical Name and Synonyms: While the primary name is 5-Bromo-2-(5-bromothiophen-2-yl)pyridine, synonyms like 2-Bromo-5-(5-bromo-2-pyridyl)thiophene are also used. Knowing these helps in cross-referencing and ensuring you're sourcing the exact compound.

2. CAS Number: The Chemical Abstracts Service (CAS) registry number, 136902-53-9, is a unique numerical identifier. This is arguably the most crucial piece of information for accurate identification and avoids ambiguity.

3. Purity: This specification indicates the percentage of the target compound in the supplied material. For electronic applications, high purity is essential, typically stated as '97% Min.' or '≥97%'. A higher purity level generally leads to better performance and fewer side reactions in subsequent synthesis steps.

4. Molecular Formula and Weight: The molecular formula (C9H5Br2NS) and molecular weight (319.02 g/mol) are fundamental chemical properties. These are used for stoichiometric calculations in synthesis and for analytical purposes.

5. Melting Point (MP): The melting point range, such as 104.0-108.0℃, is a key indicator of purity and identity. A sharp melting point within a narrow range suggests a pure compound, while a broad or significantly lower range may indicate impurities.

6. Appearance: Often described as a 'White Powder' or similar, this provides a visual cue to the physical state and general appearance of the product. While basic, it's a quick initial check.

7. Absorption Maximum (λmax): For optoelectronic materials, the absorption spectrum is vital. A λmax of 322nm (in THF) indicates the wavelength at which the compound absorbs light most strongly, which is relevant for its use in devices that interact with light.

When you choose to purchase this intermediate, ensuring that your supplier in China provides comprehensive and accurate specifications is a mark of quality. Understanding these parameters allows procurement specialists to make informed decisions, compare offerings, and negotiate the best price for their specific project needs. Always verify these details to guarantee the success of your OLED, OPV, or OFET development efforts.