In the precise world of chemical manufacturing and research, confirming the identity and purity of a synthesized compound is non-negotiable. At NINGBO INNO PHARMCHEM CO.,LTD., we employ a suite of sophisticated spectroscopic techniques to thoroughly characterize our products, including 4-Bromo-4'-nitrobenzophenone. These methods provide irrefutable evidence of a molecule's structure and guarantee the quality our clients depend on.

Nuclear Magnetic Resonance (NMR) Spectroscopy is a cornerstone of structural elucidation. For 4-Bromo-4'-nitrobenzophenone, both Proton NMR (¹H NMR) and Carbon-13 NMR (¹³C NMR) are invaluable. The ¹H NMR spectrum reveals the characteristic signals of the aromatic protons on both phenyl rings. The protons ortho and meta to the bromine atom on one ring typically appear as a pair of doublets, indicative of a para-substituted aromatic system. On the other ring, the protons adjacent to the electron-withdrawing nitro and carbonyl groups often show more complex splitting patterns in the downfield region of the spectrum, allowing for precise assignment of their positions. The ¹³C NMR spectrum complements this by identifying the different carbon environments, notably the carbonyl carbon signal appearing in the highly deshielded region (around 190-200 ppm) and the carbons directly attached to the bromine and nitro groups showing characteristic shifts.

Infrared (IR) Spectroscopy provides crucial information about the functional groups present in the molecule. The spectrum of 4-Bromo-4'-nitrobenzophenone will clearly show a strong absorption band corresponding to the stretching vibration of the carbonyl (C=O) group, typically found around 1650-1680 cm⁻¹. The nitro group (NO₂) exhibits two characteristic strong absorption bands: an asymmetric stretch often observed between 1500-1560 cm⁻¹ and a symmetric stretch in the range of 1335-1370 cm⁻¹. The presence of the C-Br bond also contributes a signature absorption in the fingerprint region, usually at lower wavenumbers.

Mass Spectrometry (MS) is essential for determining the molecular weight and confirming the elemental composition. When analyzed by techniques like Electron Ionization (EI) or Electrospray Ionization (ESI), 4-Bromo-4'-nitrobenzophenone will exhibit a molecular ion peak corresponding to its molecular weight. Crucially, due to the presence of bromine, which has two major isotopes (⁷⁹Br and ⁸¹Br) in nearly equal abundance, the molecular ion peak will appear as a characteristic doublet with a 1:1 intensity ratio. High-Resolution Mass Spectrometry (HRMS) can further confirm the exact elemental formula (C₁₃H₈BrNO₃) by providing a highly accurate mass measurement, distinguishing it from other compounds with similar nominal masses.

At NINGBO INNO PHARMCHEM CO.,LTD., we ensure that each batch of 4-Bromo-4'-nitrobenzophenone undergoes rigorous spectroscopic analysis. This meticulous characterization guarantees that our clients receive a product of the highest purity and structural integrity, essential for reliable research and development outcomes.