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Dl-Methioninol

    • Product Name Dl-Methioninol
    • Alias 2-Amino-4-(methylthio)butanol
    • Einecs 249-953-2
    • 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

    965788

    Chemical Name Dl-Methioninol
    Synonyms 2-Amino-4-(methylthio)butanol
    Molecular Formula C5H13NOS
    Molecular Weight 135.23 g/mol
    Cas Number 4857-44-7
    Appearance Colorless to pale yellow liquid
    Boiling Point 96 °C at 20 mmHg
    Solubility Soluble in water
    Purity Typically ≥98%
    Storage Conditions Store at 2-8°C

    As an accredited Dl-Methioninol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The packaging for Dl-Methioninol contains 100 grams of white crystalline powder, sealed in a labeled, airtight, amber glass bottle.
    Shipping Dl-Methioninol is shipped in secure, sealed containers to prevent contamination and degradation. Packaging complies with chemical safety regulations, featuring clear labeling and hazard information. It is transported under ambient conditions, unless otherwise specified, and handled according to standard protocols for non-hazardous chemicals. Documentation accompanies each shipment for traceability and regulatory compliance.
    Storage Dl-Methioninol should be stored in a cool, dry, and well-ventilated area away from sources of ignition and incompatible substances. Keep the container tightly closed and protected from moisture and direct sunlight. Store at room temperature, avoiding exposure to extreme temperatures. Ensure proper labeling and secure the storage area to prevent accidental spillage or contamination.
    Application of Dl-Methioninol

    Applications of Dl-Methioninol in Industrial Manufacturing

    Dl-Methioninol serves as a specialized raw material across various chemical and industrial production sectors. Each downstream application requires precise control over formulation standards, integration protocols, compliance demands, and output specifications for end-use markets. As a direct manufacturer with vertically integrated processes, we ensure each supply batch meets the exacting needs of these differentiated sectors.

    1. Vitamin B1 (Thiamine) Intermediate Synthesis

    Dl-Methioninol functions as a critical intermediate in the multi-step synthesis of certain vitamin B1 analogues. Thiamine manufacturers utilize its unique molecular structure to introduce sulfur-containing moieties at precise stages, supporting both chemical yield and product stability. Controlled reaction conditions dictate the feed ratio and conversion efficiency. The hydroxyl and amino functional groups ensure reliable reactivity under cGMP-regulated environments essential to pharmaceutical precursor production.

    Industry compliance standards

    • USP-NF monograph testing for thiamine hydrochloride end-use
    • 21 CFR Part 210/211 cGMP for active pharmaceutical ingredient (API) processing
    • ICH Q7 guidelines for API manufacturing
    • EU EudraLex Volume 4 for GMP in pharmaceuticals

    Typical usage ratio

    • Ranges from 0.95 to 1.10 molar equivalents per thiamine unit, adjusted based on target analog yield and side-reaction minimization

    Downstream process integration

    • Fed into transamination or condensation stages after primary scaffold assembly
    • Purified by continuous distillation pre-addition to avoid impurity carryover
    • On-line NIR monitoring to verify substrate concentration before critical reaction sequences

    Final product types

    • Thiamine hydrochloride APIs for human pharmaceuticals
    • Thiamine mononitrate for food or feed fortification
    • Vitamin B1 analogues for functional nutrition blends

    2. Phytochemical Synthesis for Crop Protection

    Agricultural chemical producers deploy Dl-Methioninol as a precursor in the synthesis of specific organosulfur compounds exhibiting fungicidal and systemic protective properties. Custom plant health formulations rely on its sulfur atom for enhanced crop resistance. Production uses automated dosing to maintain active group integrity throughout the synthesis stages. Strict environmental and safety controls oversee all handling and discharge, given the specific reactivity profile of sulfur-containing intermediates.

    Industry compliance standards

    • REACH (EU Regulation 1907/2006) registration for raw material handling
    • ISO 9001:2015 for agricultural chemical production
    • OECD Guidelines for the Testing of Chemicals—pesticide active ingredients
    • Chinese NY/T (agrochemical sector norms)

    Typical usage ratio

    • Between 5–12% (w/w) of total organosulfur content in starting formulation, adjusted based on crop protection compound and required field persistence

    Downstream process integration

    • Introduced as an alkylating agent during first-step condensation with other amino acid derivatives
    • Maintained at low temperatures to prevent volatile loss
    • Recovered by-product streams conforming to green chemistry protocols

    Final product types

    • Sulfonylurea herbicides
    • Custom fungicide blocks for industrial farms
    • Sulfur-based micronutrient foliar sprays

    3. Biosynthetic Feed Additives Manufacturing

    Feed solutions, especially for monogastric animals, rely on precise chemical precursors. Dl-Methioninol is processed in biosynthetic setups to produce specialized feed additives that deliver targeted methionine supplementation. The chemical purity and impurity profile must match animal nutrition standards to avoid adverse metabolic outcomes. Integration with large-scale bioconversion reactors ensures consistent output and efficient feed additive conversion rates, meeting regulatory feed norms worldwide.

    Industry compliance standards

    • AAFCO (Association of American Feed Control Officials) ingredient definitions
    • EC Regulation No. 1831/2003 on additives for animal nutrition
    • Feed GMP+ International Scheme (FSA module)
    • ISO 22000 food safety management for feed materials

    Typical usage ratio

    • 0.2–0.5% by mass in methionine supplementation blends for layer and broiler feeds; tailored to species and stage of growth

    Downstream process integration

    • Added upstream of microbial fermentation zones to enable amino acid biosynthesis
    • Integrated with enzymatic conversion modules for higher purity feed-grade material
    • Batch sampling every 2 hours for nutritional and impurity testing

    Final product types

    • Feed premixes for poultry and swine production
    • Protein concentrate additives
    • Amino acid-enriched feed blocks

    4. Chiral Building Block in Pharmaceutical API Synthesis

    Custom synthesis hubs for APIs exploit Dl-Methioninol’s bifunctionality as a chiral building block for advanced pharmaceutical intermediates. Enantioselective conversion methods and rigorous in-process controls extract desired isomers to maximize bioactivity in the final API. Manufacturing protocols, including controlled temperature and pH steps, ensure consistent stereochemistry and high-purity outcomes aligned with ICH and regional pharmaceutical directives.

    Industry compliance standards

    • ICH Q11 for API manufacturing process development
    • ISO 15378 for packaging materials in contact with APIs
    • FDA 21 CFR Part 314 for new drug substances
    • ChP (Chinese Pharmacopoeia) for pharmaceutical intermediates

    Typical usage ratio

    • 0.8–1.2 molar ratio versus main substrate, modified to suit target enantiomeric excess and downstream reaction kinetics

    Downstream process integration

    • Enters as a starting material in chiral resolution or asymmetric hydrogenation sequences
    • Used in coupling reactions with carboxylic acid derivatives
    • Purity monitored by chiral HPLC every batch

    Final product types

    • Active intermediates for cytostatic drugs
    • Precursors for CNS-active pharmaceutical compounds
    • Peptide API building blocks

    5. Industrial Flavors and Aroma Compounds Production

    Manufacturers of industrial flavors and aroma chemicals utilize Dl-Methioninol in the synthesis of high-intensity sulfur flavor compounds. The molecule introduces desirable savory profiles, especially for meat, cheese, and plant-based analogs. Process engineers control precursor ratios during Maillard synthesis and esterification reactions to achieve consistent flavor notes. Strict quality and safety assessments assess potential by-products and volatile fractions.

    Industry compliance standards

    • FAO/WHO Codex Alimentarius for food flavoring substances
    • FEMA GRAS (Generally Recognized as Safe) flavor ingredients
    • ISO 22000 and ISO 9001 for food processing safety and quality
    • EC No 1334/2008 on flavorings and certain food ingredients

    Typical usage ratio

    • Employed at 0.05–0.3% weight of final concentrate, optimized for desired sensory threshold and matrix compatibility

    Downstream process integration

    • Introduced during controlled Maillard reaction at defined temperature profiles
    • Utilized as a thiol donor in savory flavor creation
    • Emulsified for consistent homogeneity before packaging

    Final product types

    • Meat and cheese-flavored seasoning concentrates
    • Savory enhancers for plant-based protein products
    • Industrial aroma compounds for processed foods
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    Certification & Compliance
    More Introduction

    Dl-Methioninol: Practical Value from the Manufacturer’s Bench

    About Dl-Methioninol

    Working in chemical manufacturing, I see the challenges our customers grapple with while evaluating amino alcohols for synthesis or intermediate work. Dl-Methioninol stands out as a core component in many pharmaceutical and animal nutrition applications. It fronts strong demand by delivering the reliable sulfur and amine functionality industries require without introducing the usual headaches of poor shelf-life or highly variable assay.

    Drawing from years on the production line, I can say that consistent Dl-Methioninol quality doesn't happen by accident. Strict process control, properly sourced raw materials, and repeated purification steps ensure a clear, stable liquid with high assay values batch-to-batch. This stability matters when you're blending into feed or formulating intermediates.

    We manufacture Dl-Methioninol as a racemic mixture, meaning both enantiomers are present. For many uses, a racemate performs better than a single isomer, particularly in feed or as a building block for further synthesis. Our typical model falls under the identification 2-Amino-4-methylthiobutan-1-ol, with purity levels checked every run and water content kept below strict cutoff values to prevent unwanted hydrolysis during storage.

    Physical and Chemical Structure

    Dl-Methioninol carries a molecular structure integrating both primary amine and hydroxyl functional groups alongside a pivotal methylthio side chain. This architecture provides a balance between reactivity and stability. Compared to alternate methionine derivatives, the hydroxyl group opens up extra reactivity for esterification, acylation, and salt formation. Many downstream applications rely on this flexibility, especially where direct conversion to active pharmaceutical ingredients becomes crucial.

    On our line, we consistently verify each batch for clarity, color index, specific gravity, and composition by HPLC and NMR. Quality goes beyond simple purity readings — absence of side products, low moisture, and stability under light and air hold equal weight. Over time, our technicians have reduced unwanted oxidation products through tighter inert gas control and gentle material handling.

    Application Insights

    Dl-Methioninol enters the production process for several animal health, food, and pharmaceutical items. In feed, it acts as an alternative source of methionine. Animals receiving balanced sulfur amino acids produce stronger growth and better-weighted feed conversion rates. The science tracks well—several peer-reviewed studies document the role of methionine analogs and their metabolites in reducing nitrogen loss and improving protein retention.

    Pharmaceutical operators value the molecule for its bifunctional handle. Many antihypertensive and antimicrobial agent syntheses use methioninol as a starter, where its reactivity allows for clean step-through to target scaffolds without the pitfalls of excessive byproduct formation. We have seen local clinics and laboratories request small, high-purity lots for R&D work, particularly where a patent-protected synthetic route needs a robust supply of a specific intermediate.

    After years of feedback from pilot customers, our technical service group can help trace issues with downstream reactivity to subtle impurities in starting material. Switching to our high-spec Dl-Methioninol has resolved multiple customer bottlenecks. Common sources of frustration—trace aldehydes, variable pH shifts, color changes in long-term storage—are directly tied to production discipline, and we have learned how to mitigate each of them in-house.

    Comparison with Related Molecules

    Dl-Methioninol differs from straight methionine by possessing an additional alcohol group, giving it superior chemical leverage for certain synthetic applications. While methionine and its salts are widely used in nutrition, the alcohol group on methioninol translates to new derivatization options. This saves steps when building up more complex molecules in the pharmaceutical sector.

    Methionine hydroxy analogues and other structural kin can sometimes bridge the gap, but they often lack the precise balance of nucleophilicity and solubility needed. In aqueous solutions, Dl-Methioninol holds steady, showing no tendency toward premature precipitation or problematic emulsion formation. These points matter in large batch processing where downstream ease translates directly to savings in time and energy. By keeping the water content and impurity profile tight, we have seen repeat customers report better yields in multi-stage reactions compared to competitor materials with looser standards.

    Manufacturing Experience and Process Evolution

    Our Dl-Methioninol comes out of a process built on real-world fixes and refinements. We started with traditional batch synthesis, then iterated through continuous processing phases as demand and quality standards climbed. Handling sulfurous intermediates requires precise control of heat, pH, and oxygen. Small slip-ups cause odor problems and purity losses, sometimes unnoticed until well down the distribution chain. Learning through repeated purification steps, we developed a system that minimizes byproduct build-up and off-color formation.

    Temperature control during synthesis and downstream purification avoids unwanted side reactions that might jeopardize later applications. Our team tracks every batch for deviation and has longstanding protocols for trace impurity removal. Over the years, customer feedback pointed to the need for better long-term stability—so we started packaging under inert atmosphere where warranted and introduced small-size batch options for those conducting very fine synthesis with low annual volumes.

    Packaging, Storage, and Handling Realities

    Working on the manufacturing floor, we’ve learned that Dl-Methioninol storage makes a difference in final performance. Early on, packaging used to allow some air contact, which occasionally triggered color and odor change. Adjusting to heavy-duty plastic or stainless lined vessels plus nitrogen sparge brought those complaints close to zero. Feed customers on large lots now request returnable intermediate bulk containers (IBCs), while smaller pharmaceutical groups look for high-purity, sealed options in amber glass to prevent light-induced breakdown.

    All this comes from working directly with global customers and tailoring what we supply to the realities of their lab, pilot, and factory environments. Nothing replaces walking a facility floor and seeing where storage solutions pull their weight, especially with a material carrying an amine and a thiol in the same molecule. Safety training and transparent MSDS supply remain integral. We encourage dialogue about ideal handling to keep operators downstream efficient and safe.

    Market Feedback and Adoption Challenges

    As raw material pricing for protein supplements and chemical intermediates swings, purchasing agents often pressure us for cheaper alternatives. Yet repeat experience proves that lower-priced, lower-spec methioninol can introduce more long-term cost due to increased downtime, greater rework rates, or even complete batch discards. We’ve seen side-by-side testing where off-specification alternatives clog filtration lines or introduce off-notes in animal feed. The risk cascades quickly in multi-step syntheses, frustrating downstream processes.

    We take these lessons into our quality management system. By holding our assay and impurity cutoffs non-negotiable, we trade off short-term margin for long-term reliability and partnership. Traceability isn’t just a buzzword here; every lot can be backtracked to its parent raw material supplier, with full COA and impurity record. In an era where regulatory scrutiny climbs yearly, those paper trails matter for recall protection and international shipments.

    Sustainability and Waste Management

    Over the years, reducing waste in Dl-Methioninol manufacturing became key. Sulfur-rich syntheses produce smells and leftover sulfur byproducts. Early process runs vented unpleasant odors, which local authorities flagged. We responded with closed-loop recovery of sulfur vapors and improved waste stream separation, dropping facility complaints and keeping environmental compliance on point.

    Feed markets also ask us about margin sustainability. We focus on yield improvement and raw material conservation by tweaking process stoichiometry. Some in our team have worked up pilot schemes capturing waste solvents for reuse and minimizing wastewater volumes. Results show both cost wins and a tighter environmental record, with fewer shipments to waste handlers and better public reporting numbers.

    Regulatory Compliance and Documentation

    Dealing with food and pharma sectors brings regular audits from both domestic and international agencies. We maintain strict batch release protocols, trapping every error and fixing systemic causes before ship-out. Full traceability for raw materials, clear labeling, and up-to-date safety documentation mean our Dl-Methioninol delivers not just a molecule, but peace of mind for customers navigating their own regulatory pathways.

    We see this approach valued most by those manufacturing finished products with high compliance risk. If a customer flags a documentation gap, we pull records within hours, not days, because all batch histories stay digital and get reviewed quarterly.

    Technical Support and Problem Solving

    Our technical service group spends much of its week walking customer labs through troubleshooting. For Dl-Methioninol, crystallization at low temperature or unexpected color formation sometimes surface in customer feedback. The real-world solution comes from years of batch tracking on our end—we know the tell-tale signs of oxidation or unbalanced pH at the client’s site and can recommend small fixes, whether it’s a different storage temperature or slightly adjusted pH as the material enters their process.

    Customers often share pilot trial results with us, reporting back on ease of handling, incorporation rates in feeds, and performance in organic synthesis. This information loops back to drive internal process improvements, whether around filtration, final drying, or packaging changes. In weighing long-term partnerships, this feedback equals gold for process scale-ups and next-generation product launches.

    Innovation and Looking Forward

    Innovation in our space means steady gradual improvements, rather than showy leaps. Dl-Methioninol production today looks different than a decade ago, thanks to digital controls for pH and heating, better pump and piping materials, and process analytics. We continue investing in in-line monitoring for tighter impurity control. Customers push us for greener methods and alternatives to legacy reagents, so every year we test new catalysts and evaluate solvent swaps for both safety and environmental gain.

    What sets our Dl-Methioninol apart in a crowded market? As an actual maker, we offer not just a product but accumulated know-how from failures and successes alike. We tweak process recipes for new regulatory needs and customer requirements, aiming to deliver a molecule that acts consistent and clean, batch after batch. Our team stands ready for custom adjustment, whether specification changes or new analytical support come into play. All of this grows from listening to end-users, not just selling molecules from a spreadsheet.

    Conclusion

    Dl-Methioninol isn’t just another chemical on a catalog page. Manufacturing and supplying it at industrial scale demands exacting standards, careful listening to customer problems, and clear-eyed attention to detail from raw material intro to final drum shipment. We keep improving our process not for show, but so every user, from feed blender to pharmaceutical formulator, runs into fewer hitches and earns greater value from every kilogram they receive. That’s the difference firsthand manufacturing experience makes.