4-Methoxyphenylboronic Acid CAS 5720-07-0: Uses, Specifications, and Buying Guide

I use 4-Methoxyphenylboronic acid, also called 4-anisylboronic acid, as an aromatic boronic acid building block for synthetic chemistry and research applications. Its identifying information includes CAS Number 5720-07-0, molecular formula C₇H₉BO₃, and an approximate molecular weight of 151.96 g/mol. For B2B purchasing, I recommend evaluating not only the chemical name but also purity, analytical documentation, packaging, batch consistency, lead time, and the supplier’s ability to support repeat orders.

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Who This Buying Guide Is For

This guide is intended for procurement teams, research organizations, pharmaceutical and agrochemical development groups, specialty chemical manufacturers, and laboratories sourcing 4-Methoxyphenylboronic acid in commercial quantities. It is also useful for buyers comparing catalog material with a more structured supply arrangement. I focus on practical purchasing decisions rather than presenting an experimental procedure or a product-specific regulatory interpretation.

Because the appropriate grade depends on the intended reaction and quality system, buyers should confirm their internal requirements before requesting a quotation. A small research order may prioritize availability and convenient packaging, while a manufacturing project may require a defined specification, retained samples, batch documentation, and a more formal change-control process.

What Is 4-Methoxyphenylboronic Acid?

4-Methoxyphenylboronic acid is an organoboron compound containing an aromatic ring, a methoxy substituent, and a boronic acid functional group. The methoxy group is positioned at the para, or 4-, position relative to the boronic acid substituent. The boronic acid group can participate in carbon–carbon bond-forming chemistry, making this compound a useful intermediate in synthetic route development.

The compound is commonly represented by the formula C₇H₉BO₃, with a molecular weight of approximately 151.96 g/mol. CAS 5720-07-0 should be used together with the chemical name when preparing purchase documents, because names can vary between suppliers and internal databases. I also recommend checking the supplier’s product specification and certificate of analysis rather than relying on a name alone.

Core Chemical Role

In synthetic chemistry, the boronic acid functionality serves as a reactive handle for coupling and related transformations. Its value is that the aryl group can be introduced into a larger molecule under a suitable reaction system selected by the chemist. The exact performance depends on the reaction partners, catalyst system, solvent, base, temperature, work-up, and the quality of the starting material.

Common Uses and Application Scenarios

4-Methoxyphenylboronic acid is primarily used as an intermediate or building block in organic synthesis. It may be evaluated during the preparation of substituted biaryl compounds, heteroaryl–aryl structures, medicinal chemistry analogues, and other research intermediates. It can also be used in route scouting when a para-methoxyphenyl group is required in the target structure.

In pharmaceutical and biotechnology research, the material may support early-stage compound synthesis and structure–activity relationship work. In agrochemical and specialty chemical development, it can be considered when an aromatic boronic acid component is needed for a targeted molecular design. These applications should be treated as chemistry-use categories rather than guarantees of suitability for a specific final product or regulated process.

Application Matching

• Research and development: Select a documented research or synthesis grade with suitable analytical data and practical packaging.
• Process development: Request batch-to-batch information, impurity controls, and a realistic supply plan before scale-up.
• Commercial manufacturing: Confirm specification ownership, change notification expectations, packaging compatibility, and repeat-order capacity.
• Custom synthesis: Discuss the required quantity, target quality profile, and whether the supplier can support a staged procurement program.

Key Specifications Buyers Should Review

A commercial specification should identify the product by name and CAS number, then define the quality attributes that matter for the intended use. Typical review items include appearance, identification, assay or purity, water content, residual solvents, inorganic residues, and selected organic impurities. The exact tests and acceptance limits should be agreed with the supplier and aligned with the buyer’s application.

The value of a purity number depends on how it is measured. I therefore encourage buyers to ask whether the reported result is based on chromatographic area, assay calculation, or another defined method. A certificate of analysis should be reviewed for lot number, test date, specification limits, actual results, and approval status rather than being treated as a simple marketing document.

How to Select the Right Supply Option

Step 1: Define the Intended Use

First, I identify whether the material is needed for exploratory synthesis, process development, or routine production. This determines the level of documentation, packaging control, and supply continuity required. I also confirm whether the buyer needs a standard product specification or a customized quality profile.

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Step 2: Set the Quality Requirement

Next, I compare the intended reaction with the supplier’s available specification. If the compound will be used in a sensitive route, I ask for impurity information and representative analytical data before approving a larger order. Buyers should avoid selecting a material solely because it has the lowest nominal price when downstream purification or failed reactions could create greater costs.

Step 3: Confirm Commercial Details

Before placing an order, I request the available pack sizes, minimum order quantity, lead time, shipping terms, and payment conditions. For planning purposes, a buyer may compare at least three quantity points, such as 100 g, 1 kg, and 5 kg, although the actual availability must be confirmed for each project. Lead time should be treated as a quotation-specific commitment rather than a universal product attribute.

Step 4: Review Documentation and Logistics

I check whether the shipment can include a certificate of analysis, safety data sheet, commercial invoice, packing list, and any other documents required by the receiving organization. Packaging should protect the material during transport and support the buyer’s handling process. Storage and transport instructions should follow the supplier’s current documentation and the buyer’s internal chemical-management procedures.

Pricing, MOQ, and Lead-Time Considerations

The price of 4-Methoxyphenylboronic acid can vary with order size, purity requirement, packaging, production status, testing scope, and destination. A small pack may have a higher unit cost, while a larger quantity may require additional planning and quality review. I recommend comparing the complete delivered cost, including packaging, documentation, freight, duties where applicable, and any testing requested by the buyer.

MOQ is not only a commercial figure; it can influence inventory exposure and project flexibility. For an early-stage program, a smaller quantity may reduce unused stock, while a production project may benefit from a scheduled supply arrangement. Buyers should also ask whether the quoted lead time applies to available inventory, production after order confirmation, or a custom batch.

Supplier Evaluation Checklist

When I evaluate a supplier, I look for clear product identification, transparent specifications, responsive technical communication, and realistic delivery commitments. I also assess whether the supplier can support both immediate sampling and future scale-up. A dependable supplier should explain what is standard, what is customizable, and what must be confirmed before order acceptance.

• Can the supplier provide a current certificate of analysis for the offered batch?
• Are the purity method and acceptance criteria clearly stated?
• Can the supplier quote the required quantity and packaging format?
• Are safety, transport, and customs documents available for the destination market?
• Can the supplier discuss repeat supply, batch consistency, and change notification?
• Does the commercial quotation clearly state validity, lead time, MOQ, and delivery terms?

Maison Chemical Supply Support

At Maison Chemical, I approach 4-Methoxyphenylboronic acid CAS 5720-07-0 as a B2B sourcing requirement rather than a one-time catalog transaction. I can help buyers clarify the requested grade, quantity, packaging, documentation, and delivery destination before a quotation is prepared. The final specification, availability, price, and lead time should be confirmed for each inquiry.

For projects moving from laboratory evaluation to larger-scale procurement, I recommend sharing the anticipated annual or campaign demand as early as possible. This allows the supply discussion to address production planning, batch documentation, packaging, and logistics together. Where the buyer has a defined internal specification, Maison Chemical can review the requirement and indicate which points are standard and which require separate confirmation.

Key Takeaways

• 4-Methoxyphenylboronic acid is an aromatic boronic acid building block identified by CAS 5720-07-0.
• Its commonly stated molecular formula is C₇H₉BO₃, and its approximate molecular weight is 151.96 g/mol.
• Its main purchasing considerations are identity, purity, analytical method, moisture and solvent controls, packaging, MOQ, lead time, and documentation.
• A purity target such as ≥98.0% should be treated as a project specification to confirm, not as an automatic claim for every available batch.
• For repeat supply, buyers should evaluate technical communication, batch documentation, logistics capability, and commercial transparency.

Conclusion: How Should You Buy 4-Methoxyphenylboronic Acid?

The best way to buy 4-Methoxyphenylboronic acid CAS 5720-07-0 is to match the product specification and supply model to your actual synthetic or manufacturing requirement. Start by confirming identity and intended use, then request a defined purity specification, analytical documentation, packaging information, MOQ, lead time, and complete commercial terms. This approach reduces uncertainty and makes supplier comparisons more meaningful.

As a next step, send Maison Chemical your required quantity, target specification, packaging preference, destination, and timing. I can then help organize the information needed for a practical B2B quotation and supply assessment. Final suitability should always be confirmed by the buyer’s technical and quality teams before use in a specific process.

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