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4-(Methylthio)Benzaldehyde

    • Product Name 4-(Methylthio)Benzaldehyde
    • Alias 4-(Methylthio)Benzaldehyde
    • Einecs 247-085-3
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    213438

    Product Name 4-(Methylthio)Benzaldehyde
    Molecular Formula C8H8OS
    Molecular Weight 152.21 g/mol
    Cas Number 3446-89-7
    Appearance Pale yellow to yellow liquid
    Boiling Point 258-260 °C
    Melting Point 34-36 °C
    Density 1.16 g/cm³
    Refractive Index 1.605
    Flash Point 146 °C
    Solubility Slightly soluble in water, soluble in organic solvents
    Smiles CC1=CC=C(C=C1)C=O
    Pubchem Cid 13547

    As an accredited 4-(Methylthio)Benzaldehyde factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 100g amber glass bottle with a tight-sealed cap, labeled "4-(Methylthio)Benzaldehyde" with hazard symbols and handling instructions.
    Shipping 4-(Methylthio)Benzaldehyde is shipped in tightly sealed, chemical-resistant containers to prevent leakage or contamination. It is transported according to standard regulations for organic chemicals, typically under ambient conditions. Proper labeling, documentation, and compliance with safety guidelines ensure secure handling during transit. Avoid sources of ignition due to possible flammability concerns.
    Storage 4-(Methylthio)Benzaldehyde should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from sources of ignition and incompatible substances such as strong oxidizers. Keep it protected from light and moisture. Proper labeling is essential, and the storage area should be equipped with suitable spill containment and fire safety equipment. Store at room temperature unless otherwise specified.
    Application of 4-(Methylthio)Benzaldehyde

    Applications of 4-(Methylthio)Benzaldehyde in Industrial Manufacturing

    As a direct manufacturer, we supply 4-(Methylthio)Benzaldehyde to specialized sectors requiring this aromatic aldehyde for advanced synthesis processes. The following sections detail its precise roles across core downstream industries, supported by regulatory frameworks, formulation ratios, integration stages, and the specific finished product outputs.

    1. Pharmaceutical Intermediate for Antihypertensive Agents

    In pharmaceutical synthesis, 4-(methylthio)benzaldehyde acts as a key aldehyde component during the construction of thioether-substituted intermediates, facilitating the production of several classes of antihypertensive drugs through controlled condensation and subsequent transformations. Process engineers introduce this compound at the initial heterocycle-forming stage, as its methylthio group serves both electronic modulation and structural anchoring within the final API scaffold. Its use aligns with stringent industry and pharmacopoeial compendia, and correct dosing directly affects the efficiency of the subsequent reduction and cyclization steps.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • USP, EP, JP monograph reporting (as applicable for APIs)
    • 21 CFR Part 211 (FDA cGMP regulations)
    • ISO 9001:2015 for integrated quality management systems

    Typical usage ratio

    • 0.18 to 0.25 molar equivalents in target condensation reactions, adjusted per batch yield and target molecular weight of active intermediates

    Downstream process integration

    • Dosed in the initial condensation step with amines to form Schiff bases followed by reduction or cyclization as prescribed for the introduced API pathway

    Final product types

    • Finished bulk and formulated antihypertensive pharmaceuticals (e.g., select thiazide-like compounds, substituted benzylthiazines)

    2. Synthesis of Sulfur-Containing Flavors and Fragrances

    The methylthio substituent endows this aldehyde with pronounced aromatic potency, making it a preferred precursor for distinct sulfur-containing aldehydic notes in the fine fragrance and specialty flavor sector. Its controlled use during flavor molecule synthesis requires careful compliance with global food additive directives and IFRA safety codes, primarily during the aldehyde introduction step by perfumers and flavor chemists. Product designers monitor addition levels to maintain both consumer safety and regulatory conformance.

    Industry compliance standards

    • IFRA Code of Practice for fragrance ingredients
    • Flavor and Extract Manufacturers Association (FEMA) GRAS status—where applicable
    • EU Regulation (EC) No 1334/2008 on flavorings for food use
    • 21 CFR 172 (FDA Food Additives Permitted for Direct Addition to Food)

    Typical usage ratio

    • 0.01% to 0.05% by mass in finished concentrate, with adjustments according to sensory threshold and final composition solubility

    Downstream process integration

    • Participates in acetalization, oxidation, or reductive transformations at the flavor-former or fragrance blend compounding stage

    Final product types

    • Complex aroma chemicals (e.g., methylthioaldehyde derivatives)
    • Finished perfume compositions and food flavoring bases

    3. Dye and Pigment Intermediate Manufacturing

    Due to its electrophilic aldehyde group and electron-rich methylthio side chain, this compound is integral for the synthesis of specific sulfur-containing dyes and specialty pigments. Dye manufacturers employ it as a building block in the Mannich-type or Friedel–Crafts pathways, supporting deposition of color-imparting functionalities on aromatic skeletons. Its incorporation falls under strict environmental and worker safety requirements set by colorant industry authorities, and plants scale the raw material input to the required batch tonal intensity.

    Industry compliance standards

    • REACH (EC 1907/2006) for chemicals registration in pigments and dyes
    • OEKO-TEX® Standard 100 (applicable for textiles)
    • ZDHC MRSL Version 3.1 (chemical management in textile dyes)
    • US EPA TSCA for chemical manufacturing

    Typical usage ratio

    • 5% to 15% w/w based on target pigment synthesis formulation, adapting to required color depth and structural context

    Downstream process integration

    • Feedstock for condensation or coupling reactions in the key pigment-forming process; input timing synchronized with oxidant/coupling agent addition

    Final product types

    • Sulfur-atom modified pigment dispersions
    • Special effect dyes for plastics, textiles, and coatings

    4. Agrochemical Active Ingredient Synthesis

    Industrial agrochemical formulation operations use this compound for the stepwise construction of sulfur-modified aromatic systems, which serve as precursors for herbicides and fungicides targeting resistant weed or fungal populations. Production facilities dose the aldehyde in early-stage condensation with active nucleophiles before multiple downstream derivatizations. Regulatory considerations prioritise purity and minimization of residuals in accordance with global pesticide legislation and guidelines.

    Industry compliance standards

    • FAO/WHO specifications for pesticide quality control
    • China GB 2763 Maximum Residue Limit (where applicable for synthesis)
    • US EPA FIFRA requirements for technical active manufacturing
    • ISO 17025 for laboratory testing quality

    Typical usage ratio

    • 3% to 10% by mole depending on the structure of downstream target molecule and efficacy optimization in the field trials

    Downstream process integration

    • Introduced as the electrophilic partner in condensation or cyclization stages, typically within closed reactor systems under inert conditions during active substance synthesis

    Final product types

    • Sulfur-substituted phenylacetic acids as key actives in weed control
    • Aromatic thiobenzaldehyde derivatives for fungicidal formulations

    5. Photoinitiator and Photochemical Material Production

    Advanced resin and coating manufacturers utilize this raw material during the preparation of aromatic ketone photoinitiators, which drive controlled radical polymerization in UV-curable systems. Material scientists orchestrate its input in the acylation and subsequent functionalization step, tailoring properties toward specific absorbance and energy transfer characteristics, and always operate under industry acrylate monomer purity standards and functional safety coding for finished photoinitiators.

    Industry compliance standards

    • ISO 9001 for photoinitiator manufacturing traceability
    • EC Directive 2001/95/EC (general product safety for photochemical products)
    • GHS/CLP Regulation (EC) No 1272/2008 for labeling and handling
    • RoHS 3 (EU 2015/863) for electronic and optical applications

    Typical usage ratio

    • 1% to 8% w/w relative to total resin solid content, modifiable per photoinitiator molecular weight and final UV absorption profile

    Downstream process integration

    • Charged into the acylation or direct etherification sequence for aromatic ketone or thioether-derivative photoinitiator fabrication prior to UV polymerization blending

    Final product types

    • UV-curable printing inks and varnishes
    • Adhesives and clear coatings for electronics and optics sectors
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    Certification & Compliance
    More Introduction

    4-(Methylthio)Benzaldehyde: Our Perspective as a Chemical Manufacturer

    Our Commitment to Manufacturing Quality 4-(Methylthio)Benzaldehyde

    Producing 4-(Methylthio)Benzaldehyde, known in the lab as p-methylthiobenzaldehyde, takes more than good intentions and standard machinery. Reliable output starts with a deep grasp of the chemistry involved at every stage. Our crews run batch after batch, always reviewing technical data and personal notes. Over the years, we’ve honed our process to reduce variations in color, impurity content, and overall consistency. This persistence translates into fewer hold-ups for processors who rely on our output. We pay attention to everything, beginning with sourcing methylthiotoluene stocks from trusted suppliers, not just anyone on the open market. Some incoming raw material shipments get turned away if their impurity profiles don’t meet our internal standards, even if they would pass under looser requirements found elsewhere.

    We target a content specification of greater than 99% 4-(Methylthio)Benzaldehyde, verified by HPLC and GC-MS, which leaves little room for unwanted aromatic side products. Some producers accept broader impurity peaks or higher water content, but we know how a minor impurity can cause a headache during downstream reactions. Our drying process runs longer than most, sometimes attracting scrutiny for what looks like a slower cycle; we’ve learned that patience here avoids costly rework later for our customers. Each drum gets sealed under nitrogen before leaving our warehouse to maintain integrity and slow oxidization.

    Understanding the Significance of 4-(Methylthio)Benzaldehyde

    4-(Methylthio)Benzaldehyde forms the backbone of many fine chemical syntheses. Those in the flavors and fragrance industry know this aldehyde’s value for building sophisticated molecular structures, but the reach goes much further. Agrochemical researchers use it as a building block for new active agents and intermediates, recognizing that the methylthio functional group can enhance the reactivity and targeting of new compounds. Our customers in pharmaceutical research frequently discuss the challenges involved in sourcing a benzaldehyde with such a specific substitution pattern—they notice contamination fast because their downstream applications don’t forgive mistakes.

    We’ve heard from pilot plant supervisors who say that overlooked or merged impurity peaks in technical grade batches can trip up scale-up efforts. Because of this, our own team includes experience from both R&D and large-scale manufacturing. We appreciate that even a minor deviation in melting point or trace metallic contamination changes what researchers deal with several steps down the line. Supporting this level of control takes more resources, but we prefer that to handling complaints or credit returns. We use cold crystallization rather than rapid solvent precipitation for final purification, trading some short-term speed for long-term stability and reliability. Every technical tweak reflects trade secrets we refined with time and by listening to our customers’ challenges.

    Advantages and Practical Differences Compared to Other Benzaldehydes

    Every so often, new customers ask why 4-(Methylthio)Benzaldehyde beats simpler options like unsubstituted benzaldehyde or even structurally close cousins like 4-methoxybenzaldehyde. The answer ties back to fine structure-activity relationships. That methylthio group isn’t just decoration—its electron-donating effect impacts reactivity in condensation reactions, Grignard additions, and other synthetic manipulations. Those who have tried more available aldehydes and failed in their coupling or cyclization routes recognize the difference immediately. The para position and metabolic fate of the methylthio group change how molecules interact in both chemical and biological settings. Customers working in pesticide development choose our batch because it unlocks chemistry they cannot run with strictly oxygenated or plain aromatic substituents.

    Substitution pattern also changes scent character dramatically, which matters for fragrance houses and new aroma molecule scouts. Technicians from perfumery groups often visit to examine our stocks, noting the background notes and volatility profile. They discuss their disadvantages using 4-chlorobenzaldehyde or benzaldehyde itself, reporting less nuanced aroma and a tendency to overpower or fall flat in branded blends. Our 4-(Methylthio)Benzaldehyde provides warmth, complexity, and persistence, allowing for more sophisticated product outcomes. We run aroma panels side-by-side with samples from competing origins, accepting honest feedback and adjusting purification as needed until leaders in our customer base approve each lot.

    Manufacturing Process: What Experience Has Taught Us

    We’ve run thousands of kilograms through both older glass-lined reactors and new stainless steel lines. Those years gave us a good sense of what can go wrong—and what separates professional manufacturing from casual repacking or reselling. Our process sticks to the oxidation of 4-(methylthio)toluene under tightly controlled conditions. Oxidants get carefully dosed to avoid over-oxidation, which causes choking byproducts or waste. Engineers monitor endpoint conversion literally round the clock at key steps, confident that rushing this period leads to crude drumming and extra filtration, wasting time and solvent. These decisions save customers downstream headaches, as no researcher wants to run ten extra columns stripping off over-oxidized tars.

    For us, it’s not just about meeting specifications but exceeding them—the aim is for each batch to be clear, predominantly colorless to pale yellow, with no lingering sulfurous traces or extraneous aromatics. We emphasize closed transfer and nitrogen blanketing more aggressively than most, a lesson gained from watching colleague companies struggle with product browning. Recovery yields track a tight range, with losses logged and traced for every campaign. The crew in our analytical lab joins production meetings regularly, ensuring lot release criteria align with both legacy research and current customer needs. Open dialogue with users has helped us catch trends early, whether it’s new analytical techniques or unexpected downstream degradation.

    Addressing Challenges Unique to 4-(Methylthio)Benzaldehyde

    Unlike many simpler aromatic aldehydes, 4-(Methylthio)Benzaldehyde can’t be stored indefinitely without showing changes. We realized early on how it reacts to traces of air or moisture, forming oxidized species or picking up faint odors. We package in HDPE drums chosen for their barrier resistance, sealing them not just for shipment, but also for warehouse shelf life. Incoming customer reports on shelf-life have shaped our protocols, encouraging us to add fresh packaging liners and monitor drum seals for every order. In the few cases a user reports unexpected haziness or note variations, our technical support investigates, sometimes pulling batches for reanalysis. Customer feedback makes all the difference. We keep channels open to rework supply chain routes or update protocols as observations roll in.

    Some customers who first buy from generic distributors notice inconsistencies—some saying the same “model” seems different month to month. Our hands-on approach avoids this by maintaining a dedicated production line solely for this compound, not sharing equipment with unrelated chemicals. The result: cross-contaminants and memory effects from previous syntheses don’t show up in our final product. It’s a quiet change that shows up in the details—a point sampled for sulfur content shows near-background levels, supported by clean GC baseline and crystal structure studies.

    Supporting Research and Development Applications

    Our close ties to research chemists have shaped how we view 4-(Methylthio)Benzaldehyde. Many buyers are not running commodity-scale operations, but need reliable input for novel pathways in medicinal chemistry, agricultural development, or advanced material synthesis. We test new purification tweaks based on feedback from such researchers—sometimes running sample lots specifically tailored to their toughest requirements. Whether it’s improved chromatographic purity or lower trace metal content, our focus remains on supporting technical progress for these partners. Some have shared published work based on batches we supplied, and seeing a citation tied to our careful process reinforces the value of a manufacturer mindset—one that blends reliability with genuine curiosity about the chemistry in play.

    Not every user needs batch-level analytical detail—some production customers want clean, standard material for ongoing formulations. Even then, we keep open lines so that any change in performance or process triggers a full look-back: checking starting material purity, retesting reserve samples, and mapping out processes for possible improvements. This cycles back into our facility protocols, raising our bar and allowing rapid response to market demands or surprises. We also routinely share best practices with interested customers, describing recommended storage, handling, and process parameters for maximizing shelf-life and minimizing unwanted side reactions. We don’t just ship out goods and move on—we stand behind every drum that leaves our dock.

    Industry Trends and Market Evolution: Observations from Inside the Facility

    The world for specialty benzaldehydes continues to change. Environmental oversight grows tighter, and downstream customers pay attention to not just performance, but also provenance and sustainability. In response, our facility moved away from hazardous solvents in the oxidation phase, switching to more easily recoverable systems and reducing waste sent to incineration. We maintain proper documentation for everything from traceability to up-to-date SDS files, well ahead of regulatory demands. Those asking for “green” options find our records and process transparency useful, especially when exporting across sensitive borders.

    Some new players try cutting costs by offering technical grades or blending rejects into standard batches. We’ve encountered surprising stories from customers who tried such options and ended up discarding several lots for product purity or odor “off-notes” that went unnoticed until late-stage testing. Our consistency prevents these headaches, as we hold ourselves accountable for every deliverable. As more synthetic chemists look to detailed molecular design, they select partners who back their output with years of hard-won experience, not just price points.

    Looking Ahead: Ongoing Developments in Manufacturing

    In our lab, new projects focus not only on output, but also on achieving even higher purity and reducing waste. We’re piloting improved filtration media, investigating streamlined recovery from mother liquors, and testing alternative oxidants to further limit byproduct formation. Our in-house analytical team cross-validates methods to align with customer labs around the globe. Any quality deviation—no matter how minor—goes through root cause analysis and corrective procedures to tighten process control. The cycle of making, testing, listening, and refining never truly ends.

    Some long-time customers appreciate our willingness to run custom small lots, adjusting for new analytical targets or unique downstream chemistry. We see our role not just as a supplier, but as a partner in the evolution of synthetic science. Any question gets direct attention from our technical team, whether it’s about reactivity patterns, packing configuration changes, or longer-term stability studies. These real-life collaborations keep us grounded in the needs of the chemical industry and enable rapid response to both established and emerging demands.

    Conclusion: Experience Matters in Manufacturing 4-(Methylthio)Benzaldehyde

    Through years of work, from laboratory pilot scale to multi-ton campaigns, we’ve learned that manufacturing reliable 4-(Methylthio)Benzaldehyde hinges on details—some easy to overlook from the outside. Our focus on sourcing, process optimization, packaging, and technical support stems from direct feedback and our own hands-on experiments with each batch made. The trust developed with research, flavor-fragrance, and chemical production partners comes from stubborn dedication—not shortcuts, not generic repackaging, and not by favoring speed over quality.

    As new technologies and standards reshape specialty aromatics, we stay alert to demands for even tighter quality, more documentation, and proof of sustainability. Our team views every challenge as a reason to improve, whether it’s a new analytical need or a trace packaging update needed for longer shelf life. For anyone serious about consistent chemistry, a manufacturer’s experience remains a vital difference, and our door stays open to those with questions or technical issues. Reliable 4-(Methylthio)Benzaldehyde isn’t a theory—it’s the outcome of dedicated manufacturing, transparent process control, and a persistent drive to meet the changing needs of the industry.