Industrial Purity Specifications and COA Analysis for 3-Bromo-4-Methylpyridin-2-Amine
- Target Specifications: Guaranteed assay ≥98.0% with detailed impurity profiling via HPLC/GC.
- Chemical Identity: CAS 40073-38-9, Molecular Formula C6H7BrN2, MW 187.04.
- Supply Chain: Scalable manufacturing process compliant with ISO and REACH standards for global export.
In the realm of advanced organic synthesis, particularly within pharmaceutical and agrochemical development, the reliability of heterocyclic building blocks is paramount. 3-Bromo-4-methyl-2-pyridinamine (CAS: 40073-38-9) serves as a critical intermediate for constructing complex molecular architectures. As a premier global manufacturer, NINGBO INNO PHARMCHEM CO.,LTD. understands that procurement decisions are driven by data integrity, consistent quality, and the ability to scale from gram to tonnage without compromising specifications. This technical overview details the industrial purity standards, analytical data requirements, and quality assurance protocols necessary for GMP-aligned procurement.
Understanding Industrial-Grade Purity Standards (≥98.0%)
When evaluating suppliers for 2-Amino-3-bromo-4-picoline, the stated purity on a certificate is often the first metric reviewed. However, industrial-grade purity extends beyond a simple percentage figure. It encompasses the profile of related substances, residual solvents, and heavy metals. For CAS 40073-38-9, a standard commercial grade typically targets an assay of 98.0% or higher. Achieving this requires rigorous control over the manufacturing process to minimize by-products such as debrominated analogues or over-halogenated impurities.
Advanced purification techniques, including recrystallization and column chromatography, are employed to meet these thresholds. It is crucial for procurement managers to request chromatograms alongside the Certificate of Analysis. A robust quality control department will utilize High-Performance Liquid Chromatography (HPLC) with UV detection or Gas Chromatography (GC) to quantify impurities down to 0.10%. When sourcing high-purity industrial purity, buyers should verify that the testing methods align with pharmacopeial standards or established internal validation protocols. This ensures that the material performs consistently in downstream reactions, such as cross-coupling or nucleophilic substitution.
Key Analytical Data Included in a Valid Certificate of Analysis (COA)
A comprehensive COA is the backbone of chemical procurement. It provides the factual evidence required for regulatory compliance and quality assurance. For 3-Bromo-4-methyl-2-pyridinamine, the following parameters are critical for verification. The data below reflects typical specifications maintained by top-tier production facilities.
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Appearance | Off-white to Light Yellow Solid | Off-white Solid | Visual |
| Assay (Purity) | ≥ 98.0% | 98.5% | HPLC Area % |
| Identity (IR) | Consistent with Reference Standard | Complies | FT-IR |
| Loss on Drying | ≤ 0.5% | 0.2% | Karl Fischer / LOD |
| Residual Solvents | Complies with ICH Q3C | Complies | GC-HeadSpace |
| Heavy Metals | ≤ 10 ppm | < 5 ppm | ICP-MS |
Physical properties also serve as secondary confirmation of identity. The molecular formula C6H7BrN2 corresponds to a formula weight of 187.04. The predicted boiling point is approximately 255.2±35.0 °C, and the density is around 1.593±0.06 g/cm³. Storage conditions are equally vital; this compound should be kept at 2-8°C and protected from light to prevent degradation. Deviations in color, such as a shift to dark brown, may indicate oxidation or improper storage during transit.
Quality Assurance Protocols for GMP-Aligned Procurement
The synthesis route employed significantly impacts the impurity profile. A common laboratory procedure involves the lithiation of 2-amino-3,5-dibromo-4-methylpyridine followed by quenching, which can yield approximately 71% under controlled conditions. However, industrial scaling requires optimized pathways that reduce reliance on hazardous reagents like n-butyllithium where possible, or ensure their safe handling in large reactors. Consistency in the synthesis route ensures batch-to-b reproducibility.
Quality assurance protocols extend beyond the final product test. It involves auditing the supply chain of raw materials, validating cleaning procedures between batches to prevent cross-contamination, and maintaining stability data. For pharmaceutical intermediates, traceability is non-negotiable. Each batch must be linked to a specific production run with retained samples available for future investigation. NINGBO INNO PHARMCHEM CO.,LTD. implements strict ISO 9001:2015 quality management systems to ensure that every shipment of 3-Bromo-4-methylpyridin-2-amine meets these rigorous demands.
Market Dynamics and Bulk Procurement
Pricing for fine chemicals fluctuates based on raw material availability and synthesis complexity. While small-scale research quantities may command high prices per gram, bulk price structures for kilogram and ton-scale orders offer significant economies of scale. Buyers should expect transparent pricing tiers that reflect the purity grade and packaging requirements. Drum packaging (25kg) is standard for industrial use, ensuring stability and ease of handling compared to smaller bottles which increase waste and exposure risk.
In conclusion, securing a reliable supply of CAS 40073-38-9 requires a partner who prioritizes technical transparency over marketing claims. By focusing on verified COA data, robust manufacturing processes, and compliant safety standards, procurement teams can mitigate supply chain risks. Whether for agricultural chemical formulation or novel drug discovery, the integrity of the starting material dictates the success of the final product.