• Dr. Santosh Kumar
• Vivek Bhatt

A comprehensive characterization of a vanillin-derived aromatic aldehyde is presented. The compound is 2-hydroxy-3,4-dimethoxybenzaldehyde with phenolic functionality. We investigated structure, interactions, solubility, and thermal stability comprehensively. FTIR, NMR, and XRD confirmed identity, purity, and substituent geometry. DSC and TGA established melting, decomposition, and residual mass behaviour precisely. The O–H stretch occurred at 3418 cm⁻¹, indicating intramolecular bonding. The C=O band appeared at 1673 cm⁻¹, confirming the aldehyde function. Methoxy C–O stretching near 1251 cm⁻¹ reflected resonance enhancement. The aldehydic proton resonated at 9.82 ppm in DMSO-d₆. XRD patterns indicated micro-crystalline order with stable lattice features. The compound showed poor aqueous solubility and high organic solubility. Acetone and chloroform showed maximum solubility among tested solvents. DSC revealed a sharp melt at 148.3 °C with purity. TGA showed decomposition onset at 227.5 °C under nitrogen. Comparative literature analysis from 2018–2025 supported these observations. Findings demonstrate strong hydrogen bonding and moderate thermal resilience. Results inform formulation design, storage guidance, and processing windows. The work adds unified structure–property evidence for substituted benzaldehydes. Novelty lies in integrated validation across spectral, crystalline, and thermal domains.

Substituted benzaldehyde, Hydrogen bonding, Thermal stability, Solubility, Vibrational structure.

"Structural analysis, molecular interactions, solubility, and thermal stability of substituted benzaldehyde", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 1, page no.f235-f242, January-2026, Available :http://www.jetir.org/papers/JETIR2601535.pdf

"Structural analysis, molecular interactions, solubility, and thermal stability of substituted benzaldehyde", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 1, page no. ppf235-f242, January-2026, Available at : http://www.jetir.org/papers/JETIR2601535.pdf