The main component may be a nitroaromatic carbonyl compound, likely a nitrobenzaldehyde. The observed spectrum shows aromatic C–H stretching at 3088 cm⁻¹ and aromatic ring vibrations at 1613 and 1550 cm⁻¹, consistent with a substituted benzene ring. Strong bands at 1550 (asymmetric) and 1351/1335 cm⁻¹ (symmetric) indicate a nitro group directly attached to the aromatic system. Carbonyl absorption appears as a strong band at 1724 cm⁻¹ with a shoulder near 1740 cm⁻¹, and the Fermi doublet at 2841 and 2778 cm⁻¹ is characteristic of an aldehyde C–H stretch. These features collectively point to a nitrobenzaldehyde-type structure. Confirmation by GC-MS or NMR would resolve the specific isomer and exclude other nitroaromatic carbonyls