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(S)-(+)-2-Methylbutyric Acid

    • Product Name (S)-(+)-2-Methylbutyric Acid
    • Alias (+)-2-Methylbutanoic acid
    • Einecs 209-295-5
    • 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

    367678

    Name (S)-(+)-2-Methylbutyric Acid
    Cas Number 498-22-6
    Molecular Formula C5H10O2
    Molecular Weight 102.13 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling Point 178-180 °C
    Melting Point -60 °C
    Specific Rotation +13° to +15° (neat)
    Density 0.937 g/mL at 25 °C
    Refractive Index n20/D 1.410
    Purity Typically ≥98.0%
    Smiles CC[C@H](C)C(=O)O
    Inchi InChI=1S/C5H10O2/c1-3-4(2)5(6)7/h4H,3H2,1-2H3,(H,6,7)/t4-/m0/s1

    As an accredited (S)-(+)-2-Methylbutyric Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing (S)-(+)-2-Methylbutyric Acid is supplied in a 25g amber glass bottle with a screw cap, labeled with safety information.
    Shipping (S)-(+)-2-Methylbutyric Acid is shipped in tightly sealed containers to prevent leaks and contamination. It should be packaged in compliance with all relevant regulations, including labeling for corrosive liquids. During transport, the chemical must be kept in a cool, dry, and well-ventilated area, away from incompatible substances.
    Storage (S)-(+)-2-Methylbutyric Acid should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from sources of ignition, heat, and incompatible substances such as strong oxidizing agents. Avoid exposure to moisture and direct sunlight. Store at room temperature and ensure proper labeling. Follow standard chemical hygiene and safety procedures when handling and storing this compound.
    Application of (S)-(+)-2-Methylbutyric Acid

    Applications of (S)-(+)-2-Methylbutyric Acid in Industrial Manufacturing

    As a direct manufacturer of (S)-(+)-2-Methylbutyric Acid, we serve specialized B2B sectors requiring high purity and regulatory compliance. Below are the main industrial applications, including focused details on standards, ratios, workflow, and typical final goods in each downstream market.

    1. Chiral Pharmaceutical Intermediates

    Pharmaceutical companies use (S)-(+)-2-Methylbutyric Acid as a vital chiral synthon in the asymmetric synthesis of active pharmaceutical ingredients (APIs). The enantiomeric purity directly affects the chiral integrity of drugs such as antiepileptics and cardiovascular agents. Integration requires strict QA control of optical rotation and residual solvent profiles, especially under ICH Q7 and Q3A guidelines. Manufacturers must ensure precise charge ratios for stereospecific coupling reactions, often monitored by chiral HPLC before scale-up to GMP reactor volume. Multiple downstream stages include conversion via esterification, followed by amidation or reductive amination into final APIs.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • USP/NF Monograph relevant to substance class
    • European Pharmacopoeia (Ph. Eur.) guidelines for chiral intermediates
    • FDA 21 CFR Part 211 (Finished Pharmaceuticals GMP)

    Typical usage ratio

    • 0.8–1.2 molar equivalents, adjusted to target yield based on desired enantiomeric excess; solution concentrations typically 0.1–0.4 M in stepwise synthesis

    Downstream process integration

    • Direct addition to the chiral coupling stage, following process validation on pilot scale; frequently used in the formation of chiral acid chlorides or amides for downstream coupling

    Final product types

    • Levothyroxine and analogues
    • Antiepileptic agents with optically active centers
    • Chiral β-blockers
    • Synthetic pharmaceutical building blocks

    2. Flavor and Fragrance Ester Synthesis

    Industrial flavoring manufacturers use (S)-(+)-2-Methylbutyric Acid to synthesize esters with high-impact fruity, cheese, or cream notes. These esters, produced through acid-catalyzed esterification with food-grade alcohols, meet safety and purity requirements defined by food additive regulations in the EU, USA, and China. In food-grade operations, careful monitoring of residual solvents and partition coefficients ensures conformance for both direct food contact and vapor phase applications. The chiral acid’s specific enantiomeric profile affects organoleptic qualities, and manufacturers optimize batch recipes through GC-MS quantification and sensory panel evaluation before release.

    Industry compliance standards

    • US FDA 21 CFR 172.515 (Synthetic Flavoring Substances and Adjuvants)
    • EU Regulation (EC) No 1334/2008 (Flavorings and Food Ingredients)
    • GB 2760-2024 (China National Food Safety Standard for Food Additives)
    • FEMA GRAS status for specific esters

    Typical usage ratio

    • 0.5–3.0% by weight on batch for flavor concentrate; in esterification, the acid-to-alcohol molar ratio typically ranges from 1:1 to 1:2, with catalyst loading kept below 0.2 mol%

    Downstream process integration

    • Used in the initial batch reactor charging step; acid is esterified with food-grade ethanol, propanol, or butanol under azeotropic distillation or continuous stirred-tank reactor operation

    Final product types

    • Methyl 2-methylbutyrate (fruit flavors)
    • Ethyl 2-methylbutyrate (apple, pineapple notes)
    • Formulated dairy and cheese flavor bases
    • Encapsulated flavor additives for beverage and confectionery

    3. Agrochemical Synthesis

    Major agrochemical companies employ (S)-(+)-2-Methylbutyric Acid as a building block for select herbicide and pesticide active intermediates. Its molecular structure imparts advantageous physicochemical properties to downstream esters, which increase plant uptake and environmental persistence according to regulatory dossiers. Adherence to REACH and national agrochemical regulations is necessary, including analysis for regulated residuals during synthesis and in final formulations. Typical processing involves in-situ activation to the corresponding acid chloride, followed by coupling with amine or alcohol partners under controlled temperature and inert atmosphere.

    Industry compliance standards

    • EU REACH Regulation (EC) No 1907/2006
    • China ICAMA registration for pesticide intermediates
    • US EPA 40 CFR Part 180 (Tolerance levels for pesticide chemicals)
    • ISO 9001:2015 Quality Management for bulk chemical synthesis

    Typical usage ratio

    • 0.9–1.5 molar equivalents, depending on stoichiometry for downstream esterification/amidation; batch charge adjusted based on final assay requirements in formulated actives

    Downstream process integration

    • Processed in chemically resistant reactors during the synthesis of acid chlorides and subsequent nucleophilic substitution; QA checks for unreacted acid before downstream formulation

    Final product types

    • Chiral herbicide intermediates
    • Selective growth regulator precursors
    • Proprietary pesticide active esters
    • Intermediate for pyrethroid synthesis

    4. Specialty Polymer Additive Monomers

    Polymer and plastics manufacturers utilize (S)-(+)-2-Methylbutyric Acid during the synthesis of functionalized monomers and as an intermediate for introducing specific branching in specialty copolymers. Its use allows for tuning of glass transition temperature or homo/heteropolymer compatibility in fine chemical and medical-grade plastics. Downstream processing often includes transesterification or direct polycondensation under high vacuum, necessitating real-time in-process monitoring for residual acid by FTIR or GC. Producers must comply with applicable ISO and medical polymer purity requirements, as off-spec materials impact polymer chain properties and regulatory status.

    Industry compliance standards

    • ISO 10993-18:2020 (Biological evaluation — Chemical characterization of medical device materials)
    • REACH monomer registration requirements
    • FDA 21 CFR 177.1010 (Polymers for food contact where applicable)
    • GMP for polymer intermediates (as per medical-grade specification)

    Typical usage ratio

    • 1–10% by weight as functional monomer charge; ratio is determined by target copolymer composition and desired plasticizer or modifier properties

    Downstream process integration

    • Charged directly in the initial monomer mix; undergoes polycondensation or transesterification at 120–180°C with real-time removal of water or alcohol side products

    Final product types

    • Medical copolymers with branched side-chains
    • Specialty plasticizers for high-performance elastomers
    • Functionalized resins for coating additives
    • Customized engineering plastics
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    Certification & Compliance
    More Introduction

    (S)-(+)-2-Methylbutyric Acid: An Introduction from the Manufacturer’s Perspective

    Real-World Chemistry and Its Value

    Developing reliable (S)-(+)-2-Methylbutyric acid for commercial applications means handling every step with care, from fermentation raw materials to purification and final packaging. As the direct producer, our focus has always been on reproducibility, shelf-life, and traceability. Many users look for predictable performance from (S)-(+)-2-Methylbutyric acid, especially in pharmaceutical syntheses and specialty flavors. We control stereochemistry at every stage. Not every supplier can guarantee tight enantiomeric excess; the difference starts with sourcing and technical control.

    Chemical manufacturing, particularly of chiral intermediates, asks for more than technical literature. In our line experience, an R-enantiomeric impurity, even in trace amounts, throws off a downstream reaction, creating out-of-spec batches. End-users whose products undergo strict regulatory review, such as food aromatics and active pharmaceutical ingredients, want nothing less than confidence in enantiopurity. We maintain stereospecificity by refining process checks at each stage, not only at the lab scale but inside our production tanks and blend vessels.

    Specifications as Lived, Not Just Written

    Our production route for (S)-(+)-2-Methylbutyric acid optimizes both yield and clarity while reducing the number of purification passes. Most requests from formulators and contract manufacturers really come down to purity and chiral integrity—specifically optical rotation and enantiomeric excess. Typical runs fall above 98% chemical purity, with optical rotation checked batch-to-batch for consistency. Analytical teams monitor not only GC/HPLC but also elemental composition and volatile trace organics. On a practical level, this means fewer headaches for QC chemists downstream. When clients call about performance drift or odd aroma notes, our QA records have enough historical details to diagnose root causes rapidly.

    We provide (S)-(+)-2-Methylbutyric acid primarily as a colorless to slightly yellow liquid. Those working at the bench or in production settings know storage stability matters: the acid is somewhat sensitive to oxidizers and may darken if left exposed to light or air too long. We package under nitrogen where required and stress the importance of tightly sealing containers in non-reactive drums or bottles. Technicians appreciate the reduced need for filtration or rework, so material moves quickly into ingredient bins or reactors without second-guessing.

    Chirality: Where the Details Change Everything

    Clients with background chemistry training ask about the (S)-(+)- form versus the racemic or (R)-(-) forms. Stereochemistry lies at the root of most questions, and the reason often comes down to bioactivity or scent. Take flavor development. Many specialty flavors require strictly the (S)-(+)-2-Methylbutyric acid because the R-isomer can alter, mask, or completely eliminate a targeted profile. Our customers in fragrance and flavor development bring sample panels for sensory analysis. Their teams repeatedly confirm subtle differences, some perceived only by experienced tasters but crucial in consumer perception studies.

    In pharmaceutical precursor synthesis, using the wrong enantiomer introduces risks not just in efficacy but safety. Regulatory bodies require granular reporting of chiral purity. Our lab teams routinely verify both optical rotation and enantiomeric excess using chiral columns, creating a record to satisfy global standards. Feedback from contract API manufacturers confirms our consistency saves both time and regulatory back-and-forth. They don’t just want a certificate of analysis; they rely on audit trails, raw data, and manufacturing process outlines, all of which we regularly provide without complaint.

    Comparisons: Industrial vs. Academic-Grade Product

    Often the industrial user faces tradeoffs not obvious on a datasheet. Many experimental chemists, especially in universities, source small vials of (S)-(+)-2-Methylbutyric acid from commercial catalogues, and those products sometimes carry a higher price per gram but less rigorous traceability. Our larger, process-scale lots come with the controls our industry customers have grown to expect. Industrial-scale users insist on a lower per-kilogram price, but that never means permitting any cut corners—every batch is traceable, every shipment reproducible.

    Unlike distributors or aggregators, we work directly at the intersection of customer feedback and process improvement. A single industrial client might flag an ion impurity that eluded detection in standard analysis. Instead of pushing responsibility to an upstream supplier, our plant chemists identify and resolve the impurity at source. Years of plant-level troubleshooting, adjusting retention times and controlling process flow, feed into each product cycle. That’s not something you get in a desk-bound product listing.

    Some customers ask about differences compared to racemic 2-methylbutyric acid or with products made by biocatalytic vs. synthetic processes. We commit to transparency on the route chosen—be it biological fermentation or asymmetric synthesis—highlighting strengths and known limitations. Biocatalysis often gives higher enantioselectivity, but scaling from lab to plant demands investment in biocatalyst stability and waste management. Asymmetric synthesis, conversely, delivers robust yields and fits many reactor schemes already on the ground in traditional chemical manufacturing. Some customers request a specific method to meet their sustainability goals or reduce byproduct streams, and we have adapted routes to meet these demands.

    Applications: From Fragrance to Synthesis

    Fragrance makers often use (S)-(+)-2-Methylbutyric acid for its fresh, dairy-like, and slightly fruity notes. Even trace impurities can shift the olfactory profile, especially when building compound flavors intended for dairy or fruit blends. Low impurity levels and consistent enantiomeric excess are essential to reproducibility—a crucial element for mass-market flavor applications. Consumer taste panels can perceive single-digit ppm deviations, making quality agonizingly visible. We keep sensory data and reference batches to study any deviation a customer finds.

    Pharmaceutical research and intermediate synthesis make up another major use. Here, (S)-(+)-2-Methylbutyric acid acts as a chiral building block for complex small molecules. Many chiral drugs ultimately derive their stereochemical configuration from precisely crafted precursors like ours. Regulatory filings routinely refer to our lot numbers as source material, and our documentation stands up to international auditors because our records are always fully accessible. Customers count on us for continuous availability, so we map out long-term production plans rather than one-off runs. With growing demand for custom intermediates, we’ve expanded both scale and process documentation to help new projects move confidently from bench to plant.

    Polymer researchers sometimes use (S)-(+)-2-Methylbutyric acid for specialty polyesters requiring side-chain chirality. Even if this remains a smaller market segment, the needs echo those seen in pharma and aroma chemistry: reliable enantiopurity, low residual solvent, and absolute chemical characterization. Our lab teams prepare tailored reference spectra for any client wanting full transparency in their process studies.

    Quality in Practice

    Decades in chemical production teach that quality doesn’t spring from last-minute checks. It begins with raw inputs, continues through critical control points, and only ends when clients confirm specification at their own facilities. All batches of (S)-(+)-2-Methylbutyric acid receive a full QC panel. That means more than purity and color; it includes optical rotation, odor assessment, water content, and long-term stability testing. In many cases, we keep retention samples for at least a year following shipment so clients can backtrace any irregularity. Our technical service teams answer calls not only about product data, but application notes, bench troubleshooting, and even regulatory paperwork support.

    Packaging matters nearly as much as synthesis. (S)-(+)-2-Methylbutyric acid readily absorbs oxygen and can react with basic materials, risking yellowing or spoilage. We settled on specific grades of HDPE and stainless steel for different storage sizes. Customers appreciate that our shipments arrive clear and stable, ready to use straight from the container. Multiple clients have transitioned from drums to intermediate bulk containers, citing our stability data as the primary reason for their move. Investing in packaging upgrades wasn’t without cost, but in the end, product loss and repackaging dropped sharply, returning value both to us and our customers.

    Insight from Trouble Calls and Success Stories

    Real insight comes not from routine orders but from trouble calls. More than once, a customer with a filling-line aroma off-note traced the issue to container closure, not the acid itself. We shared our experience on best sealing practices and solved the issue in days. Another group targeting a new pharmaceutical intermediate faced unexpected reactivity in downstream esterification; root cause analysis led to a trace process impurity we could eliminate with improved distillation, not added expense. The technical edge comes, not from written standards, but from applied troubleshooting and a willingness to discuss details beyond the data sheet.

    Customers in regions with high humidity flag concerns about hydrolysis during storage. For tropical destinations, we add extra desiccant packaging and auditing warehouses for temperature swings. A well-tested network of technical partners and logistics specialists has built our confidence—and that of our clients—in the reliability of each shipment through every season and climate.

    Transparency, Sustainability, and Regulatory Readiness

    Increasing scrutiny on chemical production methods means customers—especially large multinationals—want more than purity data. They ask about carbon footprint, process waste, and solvent recovery. Our sustainability investments go deep, starting with energy usage tracking and waste minimization throughout each run. Where feasible, we recover solvents and recycle process water. Reporting no longer ends at the batch record; our customers demand supply chain transparency, so we share details of sourcing and downstream impacts confidently.

    Strict global regulations, such as those from REACH in Europe or EPA in the States, drive much of the documentation accompanying our (S)-(+)-2-Methylbutyric acid batches. We maintain up-to-date safety data, offer guidance on workplace handling, and advise on product lifecycle management, including disposal. End-users developing food or pharma products expect prompt, detailed answers to regulatory queries, painlessly. Years of open-book audits mean all data is ready to support both customer and regulatory checks.

    Sustainability requests have prompted real change across our operations. One multinational recently required evidence that palm oil derivatives stayed out of their aromatic intermediate supply chain. We traced all input streams, rerouted the small amount that didn’t meet their criteria, and kept the client’s “free-from” label intact. It took weeks of plant-level investigation, not simply signing a supplier form.

    Collaborating for Better Chemistry

    Those outside large chemical manufacturing may not appreciate the daily conversations between our R&D, QC, and production teams. Each improvement in (S)-(+)-2-Methylbutyric acid production began life as a technical challenge voiced by a customer—or even a line chemist. R&D might prototype a better biocatalyst, introducing it to production for evaluation in small lots. Process engineers track yields, monitor byproduct streams, and smooth out kinks. The first runs never roll out on faith alone; trouble tickets, odd color notes, or batch yields that puzzle even senior staff force iterative improvements. Only after meeting both spec and field feedback do changes scale up for all shipments.

    Two years back, a major fragrance company needed ultra-low odor threshold performance. Standard runs produced acceptable product, but the client’s formulation accentuated a trace impurity. To support them, our chemists designed a new finishing step and re-qualified every instrument. The final product met their panel’s standards and improved quality across the whole line. Such cooperative development doesn't show up on a specification sheet—but it happens every month in real production.

    Choosing (S)-(+)-2-Methylbutyric Acid: More Than a Product

    Choosing the right source for (S)-(+)-2-Methylbutyric acid can tie directly to a project's outlook. Project leaders and production chemists factor not just cost per unit, but reliability, technical support, and clarity of communication. Sourcing from a manufacturer, as we work daily, means direct access to process specialists and a commitment to continuous improvement. Our lots don’t float between resellers; we keep batch records, line histories, and full documentation for each order.

    Long-term users often look at more than immediate price or technical data. They cite track record: consistent supply, quick response to technical issues, and transparency in both problems and solutions. Our focus has stayed on building trust with end-users, not just sales teams. That means answering technical questions, pro-actively offering process data, and remaining flexible as client needs evolve—whether the next request calls for kilogram barrels, multi-ton tanks, or new chiral forms.

    Looking Ahead: Demand for Consistency and Progress

    Demand for (S)-(+)-2-Methylbutyric acid keeps evolving. New food and fragrance formulations chase more sustainable, natural, and transparent ingredient streams. Pharmaceutical synthesis pushes higher stereochemical precision. Customers want the security of a proven producer who’s not only scaled and automated, but open to pilot lots and custom fits. They expect digital batch traceability, on-the-fly stability test data, and a manufacturer willing to adapt as their markets shift.

    We’ve remained engaged, investing in both plant improvements and laboratory resources, to keep pace with these demands. Every client challenge—whether related to scale, purity, or regulatory burden—pushes our system to improve. Being the manufacturer gives us the expertise and flexibility to deliver what matters most in practice, not just on a label.

    In the end, (S)-(+)-2-Methylbutyric acid is more than a specialty chemical. For every research chemist, flavor panelist, or process engineer relying on our product, it represents a commitment to clarity, traceability, and partnership. From farm-grown raw materials to final QC sign-off, we continue to see every kilogram not as a commodity, but as the foundation for another customer’s success.