3,4-Dichlorophenylboronic acid, CAS 151169-75-4, is an organoboron building block used to introduce a 3,4-dichlorophenyl group into suitable molecules, commonly through palladium-catalyzed Suzuki–Miyaura coupling. Its molecular formula is C6H5BCl2O2, and its molecular weight is approximately 190.82 g/mol. For buyers, the key is to confirm that the supplier’s identity, assay, impurity profile, packaging, and documentation match the intended synthesis and purchasing requirements. At Maison Chemical, we encourage customers to share their required quantity and specification so we can assess the inquiry against current supply information.
This guide is intended for procurement teams, medicinal and process chemists, research organizations, and chemical distributors evaluating 3,4-Dichlorophenylboronic acid. It explains the compound’s identity, where it may fit in synthesis, and what to clarify before placing an order. It is not a substitute for a reaction-specific procedure or a supplier’s current product documentation. Buyers should base acceptance and handling decisions on their own process requirements and the documents provided for the actual material.
3,4-Dichlorophenylboronic acid is an arylboronic acid: a phenyl ring bearing two chlorine substituents and a boronic acid group. The “3,4” designation identifies the positions of the chlorine substituents relative to the carbon attached to the boronic acid group. Its CAS Registry Number is 151169-75-4, a useful identifier for distinguishing it during quotation, order review, and documentation checks.
The boronic acid group is the reactive feature commonly used in carbon–carbon bond-forming chemistry. In a Suzuki–Miyaura coupling, an arylboronic acid can couple with a suitable aryl or vinyl halide or related electrophile under an appropriate catalytic system. Whether this particular reagent performs as needed depends on the substrate, reaction conditions, and material quality; a CAS number alone does not establish suitability for a specific route.
| Item | Information | Buyer check |
|---|---|---|
| Product name | 3,4-Dichlorophenylboronic acid | Confirm the substitution pattern is 3,4-dichloro. |
| CAS Number | 151169-75-4 | Match the number across the quotation and product documents. |
| Molecular formula | C6H5BCl2O2 | Use as an additional identity cross-check. |
| Molecular weight | Approximately 190.82 g/mol | Check consistency with the stated formula and calculation basis. |
The primary reason to evaluate this compound is its potential role as an aryl source in cross-coupling synthesis. It may be considered when a target structure calls for a 3,4-dichlorophenyl substituent and the planned route is compatible with an arylboronic acid. The two chlorine substituents are part of the transferred aromatic group, but their presence does not by itself predict yield, selectivity, or compatibility with every substrate.
In route development, chemists typically assess the reagent alongside the coupling partner, catalyst, base, solvent, and process conditions. The selected boronic acid should be judged in the context of the full reaction rather than as an isolated product specification. For scale-up or regulated development, teams may also need tighter controls for identity, assay, impurities, and lot consistency than are required for early exploratory work.
Start by defining what “acceptable material” means for the project. A research screen may tolerate a broader specification than a process step where impurities could affect downstream isolation or analytical interpretation. If you use a numerical assay threshold, state it as a purchasing requirement rather than assuming every supplier offers the same grade.
For example, a buyer might request an assay target of ≥98.0% for evaluation, but this is only an illustrative specification and is not a claim about any particular lot or Maison Chemical product. The appropriate value depends on the application, analytical method, and internal acceptance criteria. Ask the supplier to state the method or basis used for the reported assay when that information is material to your decision.
Check that the product name, CAS number, formula, and any stated assay refer to the same material on the quotation, label, and batch documentation. Request the current Certificate of Analysis (COA) for the offered lot and review the reported tests, results, and units. If the COA does not address a requirement important to your process, ask whether the supplier can provide clarification or additional information before ordering.
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Provide a realistic order quantity and explain whether the material is for laboratory evaluation, route development, or planned production. You can request pricing at relevant breakpoints—for example, 100 g and 1 kg—without assuming that either quantity is a standard stock pack or available for immediate shipment. Confirm the offered pack size, packaging material, dispatch estimate, destination, and any applicable shipping or import requirements in writing.
Price comparisons are meaningful only when the offered assay, documentation, pack size, delivery terms, and quantity are comparable. Minimum order quantity and lead time may vary with stock status, batch availability, and destination, so buyers should obtain current confirmation instead of relying on generic estimates. For time-sensitive work, include the required arrival date in the inquiry and ask the supplier to distinguish confirmed availability from an indicative schedule.
A useful supplier response should address the exact compound and CAS number, not just a similar boronic acid or an alternative positional isomer. Check whether the supplier can clarify available documentation, quote terms, packaging, and the process for resolving a specification question. Clear answers before purchase can reduce avoidable delays during receiving and quality review.
Review these points together rather than treating a low quoted price as the only decision criterion. The most relevant supplier is one whose material and supporting documents can be evaluated against your technical and purchasing requirements. If a specification is essential, obtain written confirmation before issuing a purchase order.
At Maison Chemical, we support B2B inquiries for 3,4-Dichlorophenylboronic acid by reviewing the requested identity, quantity, specification, and destination before confirming a quotation. Availability, minimum order quantity, lead time, and documentation are subject to confirmation for the specific inquiry and lot. We do not assume that a standard package, assay, or delivery schedule applies to every order.
To help us respond efficiently, include CAS 151169-75-4, your target quantity, required assay or other acceptance criteria, destination country, and requested delivery window. If you need a COA or other product documents for internal review, mention this in your inquiry. We can then clarify what is available for the offered material and identify any points that need resolution before purchasing.
3,4-Dichlorophenylboronic acid CAS 151169-75-4 is an arylboronic acid with formula C6H5BCl2O2 and an approximate molecular weight of 190.82 g/mol. It may be useful as a building block for coupling routes that require a 3,4-dichlorophenyl group, but its suitability must be assessed for the intended reaction and process. Buyers should confirm the exact identity, lot-specific documentation, specification, quantity, packaging, and delivery terms before placing an order.
For a sourcing assessment, send Maison Chemical your required quantity, target specification, destination, and timing. We can review the request and provide current commercial and documentation details for consideration. This gives your technical and procurement teams a clear basis for deciding whether the offered material fits the project.
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