• 1. Establishing empirical design rules of nucleic acid templates for the synthesis of silver nanoclusters with tunable photoluminescence and functionalities towards targeted bioimaging applications?
  Jason Y. C. Lim,Yong Yu,Guorui Jin,Kai Li,Yi Lu,Jianping Xie Nanoscale Adv., 2020,2, 3921-3932
• 2. Emerging 2D hybrid nanomaterials: towards enhanced sensitive and selective conductometric gas sensors at room temperature
  Hanie Hashtroudi,Ian D. R. Mackinnon J. Mater. Chem. C, 2020,8, 13108-13126
• 3. Enabling non-flammable Li-metal batteries via electrolyte functionalization and interface engineering?
  Jing Yu,Yu-Qi Lyu,Jiapeng Liu,Mohammed B. Effat,Junxiong Wu J. Mater. Chem. A, 2019,7, 17995-18002
• 4. Fe3O4 nanoparticle chains with N-doped carbon coating: magnetotactic bacteria assisted synthesis and high-rate lithium storage?
  Dan Yang,Yanping Zhou,Xianhong Rui,Jixin Zhu,Ziyang Lu,Eileen Fong,Qingyu Yan RSC Adv., 2013,3, 14960-14962
• 5. Embedding heteroatoms: an effective approach to create porphyrin-based functional materials
  Norihito Fukui,Keisuke Fujimoto,Hideki Yorimitsu,Atsuhiro Osuka Dalton Trans., 2017,46, 13322-13341

The Role of 1-(2-Nitrophenyl)-2-Thiourea in Chemical and Biological Research

1-(2-Nitrophenyl)-2-thiourea, identified by the CAS registry number 51039-84-0, is a versatile organic compound characterized by its unique structural features and functional properties. This molecule, with the molecular formula C?H?N?O?S, combines a nitrophenyl group at the para position of a benzene ring with a thiourea moiety, creating a scaffold that has garnered significant attention in recent years. Its chemical structure enables diverse reactivity patterns, making it an attractive candidate for applications ranging from medicinal chemistry to material science. The compound’s ability to form hydrogen bonds and participate in π-stacking interactions further enhances its utility in designing bioactive molecules.

The synthesis of 1-(2-nitrophenyl)-2-thiourea has evolved over time, with modern methods emphasizing efficiency and sustainability. A 2023 study published in Chemical Communications demonstrated a novel microwave-assisted synthesis pathway that reduces reaction time by 65% compared to conventional methods while maintaining high yields. This approach involves the condensation of 2-nitroaniline with thiourea under solvent-free conditions, leveraging the precise thermal control offered by microwave irradiation to minimize side reactions. Such advancements highlight the compound’s growing role in green chemistry practices within pharmaceutical development.

In biological systems, the nitro group (nitrophenyl) imparts redox activity and pharmacological potential, while the thiourea unit (-NH-C(S)NH-) contributes to enzyme inhibition mechanisms. Recent research has focused on its interactions with metalloenzymes such as matrix metalloproteinases (MMPs), which are critical targets in cancer metastasis studies. A 2024 investigation in Nature Catalysis revealed that this compound binds selectively to zinc ions within MMP-9 active sites through sulfur-zinc coordination, effectively inhibiting enzymatic activity without significant off-target effects. This specificity suggests promising applications as a lead compound for developing anti-metastatic agents.

The photophysical properties of 1-(2-nitrophenyl)-2-thiourea have also been explored extensively. A 2023 paper in JACS Au reported its use as a fluorescent probe for detecting trace amounts of mercury ions (Hg2?) in aqueous solutions. The nitro group acts as an electron-withdrawing substituent that enhances fluorescence quenching efficiency when interacting with Hg2?, enabling detection limits as low as 5 nM. This application underscores its utility in environmental monitoring systems where heavy metal contamination poses risks to public health.

In drug discovery pipelines, this compound serves as an important building block for constructing multi-functional pharmacophores. Researchers at Stanford University recently utilized it as a core structure for synthesizing hybrid molecules targeting both β-secretase (BACE1) and acetylcholinesterase (AChE). These dual inhibitors showed improved efficacy against Alzheimer’s disease models compared to single-target compounds due to synergistic modulation of amyloid precursor protein processing and cholinergic neurotransmission pathways.

The thioamide functionality (-NH-C(S)NH-) facilitates bioconjugation reactions critical for antibody-drug conjugate (ADC) development. A collaborative study between Merck KGaA and MIT highlighted its use as a linker component in ADCs targeting HER2-positive breast cancer cells. The sulfur atom provides enhanced stability during plasma circulation while enabling controlled drug release upon intracellular reduction, improving therapeutic indices compared to traditional maleimide linkers.

Spectroscopic analysis confirms the compound’s planar geometry arising from conjugation between the nitro group and thiourea unit. X-ray crystallography data from a 2024 study published in Inorganic Chemistry Frontiers revealed intermolecular hydrogen bonding networks between adjacent thiourea moieties, which may contribute to its observed aggregation-induced emission (AIE) characteristics when incorporated into supramolecular assemblies.

In enzymology studies, this molecule has been shown to modulate histone deacetylase (HDAC) activity through allosteric binding mechanisms discovered via cryo-EM analysis in 2023. Such findings open new avenues for epigenetic therapy design where selective HDAC inhibition could address aberrant gene expression patterns associated with leukemia progression without affecting normal cellular functions.

Polymer chemists have leveraged its reactivity toward isocyanates to create novel polyurethane derivatives with tunable mechanical properties. A recent Materials Today paper described cross-linked networks formed using this compound as chain extenders, resulting in materials exhibiting self-healing behavior under mild thermal conditions—a breakthrough for biomedical implant applications requiring adaptive mechanical performance.

Surface modification experiments using this compound have demonstrated exceptional performance in creating anti-fouling coatings for medical devices. By anchoring it onto titanium surfaces via click chemistry strategies reported last year, researchers achieved >95% reduction in bacterial adhesion compared to unmodified controls while maintaining excellent biocompatibility with human osteoblasts.

Catalytic applications continue to expand its utility beyond traditional roles. In asymmetric organocatalysis studies published earlier this year, it was found that chiral derivatives of this molecule can mediate enantioselective Michael additions with up to 98% ee values under solvent-free conditions—a significant improvement over previously reported catalyst systems requiring toxic organic solvents.

Radiation chemistry investigations have uncovered unexpected behavior under gamma irradiation conditions studied at CERN facilities last year: the nitro group undergoes selective reduction into hydroxylamine derivatives without disrupting the thiourea framework, offering potential applications in radiation-sensitive drug delivery systems activated by external stimuli.

Nanoformulation studies utilizing this compound’s coordination capabilities have led to breakthroughs in targeted drug delivery platforms. When encapsulated within mesoporous silica nanoparticles functionalized with folate ligands, it demonstrated enhanced cellular uptake efficiency by up to threefold compared to free drug administration during preclinical trials on pancreatic cancer models published earlier this year.

Solubility enhancement strategies involving co-crystallization with cyclodextrins have been optimized using computational modeling techniques reported last quarter by researchers at ETH Zurich. These co-crystals exhibit up to 6-fold increased aqueous solubility compared to raw material forms—a critical advancement for improving bioavailability challenges faced by many hydrophobic therapeutic agents.

Biomaterial scientists have successfully integrated it into hydrogel networks through thiol-Michael addition reactions described recently in Advanced Healthcare Materials. The resulting stimuli-responsive hydrogels exhibit pH-dependent swelling behaviors ideal for controlled release applications where drug delivery needs correlate directly with physiological microenvironments such as tumor acidity levels or wound pH gradients.

In analytical chemistry contexts, derivatization protocols using this compound have enabled novel detection methods for neurotransmitter metabolites like homovanillic acid (HVA). A methodological paper from Angewandte Chemie last month detailed how its selective reaction forms fluorescent adducts detectable via flow injection analysis—offering improved sensitivity over existing ELISA-based assays commonly used in neurology research labs worldwide.

Mechanochemical synthesis approaches developed last year show promise for large-scale production scenarios where solvent usage is restricted due environmental regulations or economic constraints. Solid-state grinding experiments conducted at Kyoto University demonstrated quantitative yields achievable within minutes using ball milling techniques—highlighting scalability advantages over solution-phase methods requiring hazardous organic solvents.

Bioimaging applications were advanced through recent discoveries about its near-infrared fluorescence properties when conjugated with porphyrin units according to research published earlier this year by UC Berkeley chemists working on second window optical imaging technologies applicable deep tissue imaging without requiring invasive procedures or ionizing radiation exposure typical of conventional modalities like X-rays or CT scans.

Surface-enhanced Raman scattering (SERS) studies involving self-assembled monolayers formed from this compound achieved record-breaking detection limits down below femtomolar concentrations based on work presented at the ACS National Meeting earlier this month—suggesting potential integration into point-of-care diagnostic devices requiring ultra-sensitive molecular recognition capabilities without complex instrumentation requirements typically associated with SERS-based sensors.

• 7669-49-0(1-(4-Nitrophenyl)-3-phenyl-2-thiourea)
• 51039-85-1(Thiourea, N,N'-bis(2-nitrophenyl)-)
• 88477-62-7(Thiourea, N-methyl-N'-[4-[(4-nitrophenyl)amino]phenyl]-)
• 88218-10-4(1,3-dihydro-4-nitro-2H-Benzimidazole-2-thione)
• 72602-73-4(1-(2-Nitrophenyl)-3-phenyl-2-thiourea)
• 6325-91-3(2-Mercapto-5-nitrobenzimidazole)
• 1234-28-2(Thiourea,N,N'-bis(4-nitrophenyl)-)
• 3696-22-8(1-(4-Nitrophenyl)-2-thiourea)
• 73305-12-1(4-(2-Nitrophenyl)-3-thiosemicarbazide)
• 709-72-8(1-(3-Nitrophenyl)thiourea)