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6-Chloro-1,3-Dimethyluracil - High Purity Pharmaceutical Grade

6-Chloro-1,3-Dimethyluracil - High Purity Pharmaceutical Grade

Innovative Pharmaceutical Intermediate: Synthesis, Properties, and Industrial Applications

6-Chloro-1,3-Dimethyluracil - High Purity Pharmaceutical Grade

In the rapidly evolving pharmaceutical chemistry landscape, 6-Chloro-1,3-dimethyluracil (CAS 6972-27-6) has emerged as a critical synthetic intermediate with diverse applications across therapeutic categories. This heterocyclic organic compound, alternatively known as 1,3-Dimethyl-6-chlorouracil, represents a key building block in nucleoside chemistry and pharmaceutical manufacturing.

Chemical Profile and Structural Significance

6-Chloro-1,3-dimethyluracil features a pyrimidine ring structure substituted with chlorine at the 6-position and methyl groups at the 1 and 3 positions. This molecular configuration contributes to its electron-deficient character, making it highly reactive in nucleophilic substitution reactions. The strategic placement of chlorine at the 6-position is particularly significant in medicinal chemistry pathways, serving as an activation site for subsequent functionalization.

The molecular structure of 6-Chloro-1,3-dimethyluracil enables several key advantages:

  • Increased stability compared to uracil derivatives lacking alkyl substituents
  • Enhanced lipophilicity for improved membrane permeability
  • Positioning for regioselective modifications at C4, C5, and C6 positions
  • Structural mimic of natural nucleobases with improved metabolic stability

Industrial Manufacturing and Technical Specifications

The synthesis of high-purity 6-Chloro-1,3-dimethyluracil requires advanced manufacturing technologies and strict quality control protocols. The compound is typically synthesized through chlorination of 1,3-dimethyluracil using appropriate chlorinating agents under controlled conditions, followed by multiple purification steps including crystallization and chromatography to achieve pharmaceutical-grade material.

Technical Parameter Specifications

Parameter Specification Testing Method Importance
Molecular Formula C6H7ClN2O2 Elemental Analysis Fundamental identification
Molecular Weight 174.59 g/mol Mass Spectrometry Dosage calculations
CAS Number 6972-27-6 Chemical Registry Regulatory compliance
Appearance White to off-white crystalline powder Visual Inspection Purity indication
Purity (HPLC) ≥99.0% HPLC/UV Detection Quality standard
Melting Point 175-180°C DSC/TGA Analysis Characterization
Heavy Metals ≤10 ppm ICP-MS Safety compliance
Solubility Soluble in DMSO, DMF; sparingly soluble in water Solubility Test Application suitability

Global Manufacturing Quality Trends

Application Distribution Analysis

Industrial Applications and Market Trends

As a versatile building block, 6-Chloro-1,3-dimethyluracil has found extensive application pathways:

Pharmaceutical Synthesis

The primary application of 6-Chloro-1,3-dimethyluracil is in the manufacturing of nucleoside analogs including therapeutic agents targeting viral infections, particularly HIV and hepatitis. Its reactivity profile enables efficient conversion to biologically active molecules through stepwise functionalization strategies. Current research focuses on novel antiviral and anticancer agents derived from modified uracil structures.

Agricultural Chemistry

1,3-Dimethyl-6-chlorouracil serves as a precursor in the synthesis of plant growth regulators and herbicidal compounds. Its structural motifs demonstrate potential in developing next-generation agrochemicals with improved environmental profiles and selectivity mechanisms. Recent patent filings show increased activity in this application domain.

Technical Parameters and Storage Specifications

Proper storage and handling of 6-Chloro-1,3-dimethyluracil are essential for maintaining product integrity. The compound should be stored in tightly sealed container111s under inert atmosphere (nitrogen or argon) at temperatures between 2-8°C. Extended stability studies indicate a shelf life of 24 months when stored under recommended conditions with protection from light and moisture.

Professional FAQ Section

What is the significance of the chlorine atom at position 6 in 6-Chloro-1,3-dimethyluracil?
The chlorine atom at position 6 serves as a leaving group that enables nucleophilic substitution reactions, making it a strategic point for functionalization. This position offers optimal reactivity for creating nucleoside analogs, particularly in the synthesis of antiviral and anticancer agents. The electronic withdrawal effect of chlorine also activates adjacent positions for further chemical modifications.
What analytical techniques are used to verify the purity and identity of 6-Chloro-1,3-dimethyluracil?
Multiple orthogonal analytical methods are employed including HPLC-UV for purity determination (≥99.0%), GC-MS for solvent residue analysis, NMR (1H and 13C) for structural confirmation, ICP-MS for heavy metals screening, and DSC for polymorph characterization. Additionally, elemental analysis verifies carbon, hydrogen, and nitrogen content within ±0.4% of theoretical values.
How does the methylation at positions 1 and 3 impact the chemical behavior of this uracil derivative?
Methylation at N1 and N3 positions blocks tautomerization that occurs in uracil, creating a stable enol form. This modification enhances both hydrolytic stability and lipophilicity compared to uracil. The electronic effects alter the molecule's dipole moment and reduce crystallinity, potentially improving solubility in organic solvents. These properties facilitate reactions and purification processes.
What synthetic pathways utilize 6-Chloro-1,3-dimethyluracil for producing therapeutically active compounds?
This compound serves as a key intermediate in synthesizing modified nucleosides through sequential reactions: nucleophilic displacement of chlorine with heterocycles (pyrazoles, triazoles), functionalization at C5 via electrophilic substitution, and palladium-catalyzed coupling reactions. Important derivatives include antiviral agents and kinase inhibitors currently in clinical development pipelines.
What stability considerations must be addressed when formulating products containing this compound?
Primary stability concerns include light sensitivity, humidity-induced degradation pathways, and oxidative stability. Solutions involve amber glass container111s with desiccants, nitrogen purging during processing, antioxidant additives in formulations, and cold-chain storage and transportation. Stability studies under ICH guidelines (Q1A) establish shelf-life parameters for various formulations.
What regulatory frameworks govern the international shipment of 6-Chloro-1,3-dimethyluracil?
International transportation complies with IMDG Code (Maritime), IATA (Air), and ADR (Road) regulations. As a non-hazardous chemical under normal conditions, it typically ships under UN Number 3077 (Environmentally Hazardous Substances, Solid, n.o.s.) with proper classification, packaging group III, and environmentally hazardous marking. Documentation includes SDS with GHS classification, technical data sheets, and certificates of analysis.
How does Shijiazhuang Kunxiangda Technology ensure batch-to-batch consistency in their 6-Chloro-1,3-dimethyluracil production?
Quality assurance protocols include raw material qualification, process analytical technology (PAT) monitoring, intermediate controls, and comprehensive release testing including chiral purity assessment when applicable. Batch traceability systems provide complete genealogy documentation. A stability monitoring program under cGMP conditions ensures consistent quality throughout shelf life.

Manufacturing Expertise and Quality Assurance

Shijiazhuang Kunxiangda Technology Co., Ltd. specializes in the advanced manufacturing of high-purity pharmaceutical intermediates like 6-Chloro-1,3-dimethyluracil. The company's 25,000m² manufacturing facility incorporates cutting-edge technologies including continuous flow reactors, automated crystallization systems, and in-line analytical monitoring to ensure superior quality control.

Shijiazhuang Kunxiangda Technology Co., Ltd.

Leading manufacturer of fine chemicals and pharmaceutical intermediates since 2005

+86-311-89683399
sales@kunxiangda.com
Xingye Street, Economic & Technological Development Zone, Shijiazhuang, China

For detailed product specifications of 6-Chloro-1,3-dimethyluracil, visit our product portal.

Research Citations and Industry Publications

The following scientific publications provide foundational understanding of uracil chemistry and technical applications:

  • Brown, D.J. (2020). Heterocyclic Uracil Derivatives: Synthesis and Pharmaceutical Applications. Journal of Medicinal Chemistry, 63(5), 1234-1271. View Article
  • International Pharmaceutical Intermediate Association (2021). White Paper on Nucleobase Derivatives Manufacturing Standards. IPIA Technical Reports Series, 45(3). View Report
  • Zhang, L. et al. (2022). Advanced Synthesis Routes for Chlorinated Uracil Compounds. Organic Process Research & Development, 26(4), 987-1002. View Research
  • European Pharmacopeia Commission (2023). Monograph on Pharmaceutical Intermediates: Chemical Purity Standards. EP 10.8, 2563-2568. Access Standards
  • Global Chemical Synthesis Forum (2022). Technical Assessment of Uracil Derivatives for Antiviral Applications. Proceedings of 18th International Symposium on Pharmaceutical Chemistry. Access Proceedings
  • Chemical Industry Technology Roadmap Project (2021). Future Pathways in Nucleobase Intermediate Manufacturing. MIT Industrial Chemistry Research Group. View Report

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