4-Chlorophenylboronic Acid CAS 1679-18-1 Supplier and Purchasing Guide

If you are sourcing 4-Chlorophenylboronic acid CAS 1679-18-1, I recommend evaluating three points first: chemical identity, specification suitability, and supplier execution capability. This compound is an aryl boronic acid commonly selected as an intermediate for palladium-catalyzed Suzuki–Miyaura coupling and related synthetic work. At Maison Chemical, I support B2B buyers by helping them confirm the required grade, documentation, packaging, quantity, and delivery plan before a purchase order is placed.

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4-Chlorophenylboronic acid is identified by CAS number 1679-18-1 and molecular formula C₆H₆BClO₂. Its listed molecular weight is approximately 156.37 g/mol. Because actual purchasing suitability depends on the reaction route and quality system, buyers should not select a supplier based on the CAS number alone.

Who This Purchasing Guide Is For

This guide is intended for pharmaceutical and agrochemical manufacturers, process development teams, research organizations, chemical distributors, and procurement departments sourcing 4-Chlorophenylboronic acid for laboratory, pilot, or manufacturing use. It is especially relevant when a buyer must compare multiple suppliers or convert a small-scale research requirement into a repeatable commercial supply. The guide focuses on purchasing decisions rather than experimental instructions.

I also recommend this framework to buyers working under controlled documentation requirements. A supplier may offer the correct compound but still be unsuitable if the available certificate, lot traceability, packaging, or delivery schedule does not match the buyer’s internal procedures. Early alignment usually reduces avoidable delays during technical review and incoming quality control.

Basic Chemical Context

4-Chlorophenylboronic acid contains both an aryl chloride substituent and a boronic acid functional group. The boronic acid group is valuable in carbon–carbon bond-forming chemistry, particularly when an aryl fragment must be coupled with a suitable halide or related electrophile. The para-chloro substituent can also remain available for further synthetic planning, depending on the reaction conditions and route design.

For procurement purposes, the most important distinction is between identity and usable quality. Identity confirms that the material is 4-Chlorophenylboronic acid CAS 1679-18-1, while usable quality includes assay, impurity profile, residual solvents, water content, appearance, and batch consistency. These parameters should be reviewed against the buyer’s own method and acceptance criteria.

Types, Grades, and Specification Options

Research and Development Grade

R&D material is generally purchased for route screening, reaction development, analytical method work, or small-scale feasibility studies. Buyers may accept a practical specification supported by a certificate of analysis, provided the material is suitable for the intended chemistry. Even at this stage, I recommend confirming assay, identification method, lot number, and retest or review information.

Process Development and Manufacturing Supply

Process-oriented purchasing requires more than a nominal assay value. The buyer may need a consistent impurity profile, defined analytical methods, controlled packaging, change-notification expectations, and reliable batch documentation. A specification such as a minimum assay of 98.0% may be used as a project requirement, but the correct acceptance limit must come from the buyer’s process and quality team rather than from a generic purchasing template.

Custom or Project-Specific Requirements

Some projects require additional controls, such as a specific residual-solvent profile, lower water content, defined particle characteristics, or packaging compatible with the customer’s handling system. These requirements should be agreed before production or shipment. Maison Chemical can review the requested specification and determine whether a standard product or a project-specific supply plan is more appropriate.

Application Matching

The primary application consideration is whether the compound performs as the required aryl boronic acid building block in the buyer’s synthetic route. It may be considered for Suzuki–Miyaura coupling and other research or manufacturing processes where an aryl boron reagent is needed. However, reaction performance depends on the complete system, including the coupling partner, catalyst, base, solvent, temperature, concentration, and purification process.

For pharmaceutical intermediate projects, procurement teams should ask the process chemist which impurities are most critical. A material that is acceptable for an early screening campaign may not be acceptable for a later-stage process if trace impurities affect downstream purification or analytical profiles. This is why I encourage buyers to share the intended application level without disclosing confidential route details.

Buyer Selection Framework

1. Confirm Identity and Core Specifications

Start by confirming the product name, CAS number 1679-18-1, molecular formula, and molecular weight of approximately 156.37 g/mol. Request a current certificate of analysis for the offered lot or a representative specification sheet when a lot has not yet been assigned. The documentation should clearly identify the test methods, acceptance criteria, and result format.

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2. Review Quality Documentation

A practical supplier review should cover assay, identification, appearance, water or loss on drying where relevant, and impurity controls appropriate to the project. Ask whether the supplier can provide batch-level traceability and whether the certificate is issued by the manufacturing site or a separate testing laboratory. If your organization requires specific documents, communicate them before quotation rather than after order confirmation.

3. Match Quantity and Packaging

Quantity should be linked to project stage, expected consumption, shelf-life considerations, and the cost of repeat testing. When requesting a quote, I suggest comparing at least three quantities, such as 1 kg, 5 kg, and 25 kg, if those volumes are relevant to your program. Packaging should protect the material during transport and support safe, controlled opening and resealing at the receiving site.

4. Evaluate Supply Continuity

Price is only one part of total procurement value. Buyers should also evaluate production location, stock status, manufacturing capacity, standard batch size, lead-time assumptions, export experience, and the supplier’s process for handling repeat orders. A low initial price may be less attractive if documentation is incomplete or if future batch availability is uncertain.

Pricing, MOQ, and Lead-Time Considerations

Pricing for 4-Chlorophenylboronic acid can vary according to purity target, order volume, packaging, testing requirements, production status, and shipping destination. I recommend requesting a quotation that separates material cost from special testing, packaging, freight, and any document-related charges. This makes supplier comparisons more reliable and helps prevent unexpected landed-cost differences.

Minimum order quantity should be discussed as a commercial variable rather than assumed from a catalog listing. A supplier may support a smaller amount from available stock or require a larger production batch for a new order. Lead time also depends on whether the requested quantity is available, must be scheduled for production, or requires additional quality release before dispatch.

For planning purposes, ask the supplier to state the quotation validity period, estimated production time in business days, dispatch terms, and the date when final documents will be available. I also recommend confirming whether the stated lead time begins after purchase order approval, payment, technical agreement, or another defined milestone. Clear definitions are particularly important for international shipments and time-sensitive development programs.

Supplier Evaluation Checklist

• Does the supplier clearly identify the product as 4-Chlorophenylboronic acid CAS 1679-18-1?
• Is the offered specification aligned with the intended research, process, or manufacturing stage?
• Can the supplier provide a certificate of analysis and relevant supporting documents?
• Are assay, impurity, water, appearance, and identification requirements clearly defined?
• Can the supplier quote the required quantity and packaging without ambiguity?
• Are MOQ, lead time, quotation validity, shipping terms, and payment terms stated in writing?
• Can the supplier support repeat orders and communicate relevant product or process changes?
• Does the supplier respond to technical and commercial questions through a clear B2B contact process?

At Maison Chemical, I treat this checklist as the starting point for a structured quotation rather than as a substitute for the buyer’s quality approval. We can review the requested grade, quantity, packaging, destination, and documentation needs before confirming the most suitable supply route. Where a requirement is not yet defined, I prefer to identify it openly instead of making an unsupported assumption.

Common Purchasing Mistakes

One common mistake is comparing suppliers only by price per kilogram while ignoring assay basis, testing scope, packaging, freight, and release documentation. Another is assuming that a catalog specification automatically meets a regulated manufacturing requirement. Buyers should also avoid placing a large order before confirming that the material performs acceptably in the intended process or that the supplier can support the required documentation package.

A further risk is failing to distinguish an indicative specification from a batch-specific result. Before shipment, request the final certificate for the actual lot whenever your quality procedure requires it. If the purchase is intended for repeat manufacturing, ask how future batches will be controlled and how deviations or specification changes will be communicated.

Recommended Next Steps

1. Define the intended use: screening, process development, or manufacturing.
2. Prepare your target assay, impurity, packaging, quantity, and document requirements.
3. Request a quotation for the required quantity and at least one comparison quantity.
4. Review the specification and certificate format with your technical or quality team.
5. Confirm MOQ, lead time, Incoterms, shipping destination, and payment conditions.
6. Approve the supplier and proceed with a documented purchase order or technical agreement.

Conclusion: How to Purchase with Greater Confidence

The best way to purchase 4-Chlorophenylboronic acid CAS 1679-18-1 is to match verified chemical identity with project-specific quality requirements and dependable supplier execution. Do not rely on the CAS number or headline price alone; review documentation, batch suitability, packaging, MOQ, lead time, and future supply continuity together. This approach is suitable for both early development and more structured B2B procurement.

Maison Chemical can support your evaluation of 4-Chlorophenylboronic acid by reviewing the required grade, quantity, specification, documents, and delivery destination. Send your target order volume and quality requirements for a practical quotation and supply assessment. I will help you identify the information needed to move from supplier comparison to an informed purchasing decision.

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