2-Chlorophenylboronic acid (CAS 3900-89-8) is an organoboron compound used as a building block in organic synthesis, particularly in Suzuki–Miyaura cross-coupling reactions. Buyers typically evaluate it by identity, assay, impurity profile, documentation, packaging, and supply terms rather than by the chemical name alone. Its molecular formula is C6H6BClO2, and its molecular weight is 156.38 g/mol. In this guide, we explain how to match the material to a project, what to verify in a specification, and how to assess a supplier before requesting a quotation.
This guide is intended for procurement teams, process chemists, research laboratories, and chemical distributors assessing 2-Chlorophenylboronic acid for synthesis or resale. It is useful when preparing a first inquiry, comparing supplier offers, or checking whether a proposed grade aligns with a defined reaction and quality requirement. It is not a substitute for a project-specific risk assessment or the supplier’s current safety documentation. Confirm the exact requirements with your technical and EHS teams before placing an order.
2-Chlorophenylboronic acid is an arylboronic acid: a phenyl group bearing a boronic acid functionality and a chlorine substituent on the adjacent, or ortho, ring position. The CAS Registry Number 3900-89-8 is a useful identifier for distinguishing this compound from other chlorophenylboronic acid isomers. When ordering, include both the chemical name and CAS number to reduce the chance of confusion. For regulated or quality-sensitive workflows, confirm identity against the supplier’s product and lot documentation.
Arylboronic acids are commonly used as coupling partners in Suzuki–Miyaura chemistry, where an aryl group can be joined to a suitable coupling partner under reaction-specific conditions. The chlorine substituent may be relevant to a synthesis plan because it can remain as a functional handle or influence subsequent transformations. Whether it is retained or reacts further depends on the selected catalyst, reagents, substrate, and conditions. We recommend validating performance in the intended reaction rather than assuming that results from another substrate will transfer directly.
Typical uses include preparing substituted biaryl compounds and other aromatic intermediates for research and development. These intermediates may be investigated in pharmaceutical, agrochemical, materials, or fine-chemical synthesis, depending on the target molecule and the organization’s development program. The compound is a reagent or intermediate, not a finished product for direct end use. Buyers should confirm that the intended application, jurisdiction, and handling controls are compatible with the applicable safety information.
Before selecting a grade, consider the reaction’s sensitivity to assay, water, inorganic residues, or trace impurities. A discovery-scale reaction may tolerate a different impurity profile from a process-development campaign, while a route with a challenging purification may require tighter incoming-material controls. Define the required analytical methods and acceptance limits with the chemist responsible for the route. If the specification is not yet fixed, request available lot information and evaluate a sample where the supplier and project conditions allow.
There is no single specification that applies to every buyer or supplier. Review the product name, CAS number, molecular formula, assay method, assay result or limit, appearance description, and relevant impurity controls. Check whether the stated assay is reported on an as-is basis or corrected for water or other components, since different reporting bases can affect comparisons. Request a Certificate of Analysis (COA) for the offered lot and verify that its results match your purchase specification.
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| Item to Verify | Why It Matters | Buyer Action |
|---|---|---|
| Identity and CAS number | Helps distinguish the intended compound from related isomers or products. | Confirm the name, CAS 3900-89-8, and lot documentation agree. |
| Assay and method | Provides a basis for assessing chemical content and comparing offers. | Specify the acceptance limit and ask how the result is determined. |
| Impurities and water | May affect reaction behavior, downstream purification, or process controls. | Identify critical impurities and ask whether they are tested or reported. |
| Packaging and handling | Can influence transport suitability and material protection. | Confirm container type, net quantity, and handling instructions. |
If your project needs a numerical assay threshold, set it as a buyer requirement rather than treating an example as a universal product claim. For instance, a purchaser might evaluate whether a target such as ≥97% assay is appropriate for a particular screening workflow, but the correct limit depends on the process and available supplier data. Ask the supplier to confirm the test method, reporting basis, and lot result before relying on that figure. Do not compare percentages without checking how each offer defines and measures assay.
Request a current specification and a lot-specific COA, then check that the product identity and reported tests meet your requirements. Ask whether safety data and transport information are available for the material and destination. If your quality system requires additional documents, state those requirements before quotation so the supplier can confirm what can be provided. Avoid treating general product-page information as proof of a specific lot’s results.
Compare suppliers on the clarity and completeness of their response as well as price. Provide the requested quantity, destination, intended grade or specification, packaging preference, and required delivery window when asking for an offer. For quotation comparison, you may request pricing at illustrative quantities such as 1 g, 25 g, and 100 g, but these are inquiry examples only and do not imply availability or standard pack sizes. Confirm actual pack options, minimum order quantity, lead time, and shipping terms directly with the supplier.
Price is influenced by the requested quantity, specification, packaging, current availability, and shipping destination. Minimum order quantity and lead time are supplier- and order-specific, so neither should be assumed from a catalog listing or a previous quotation. A lower unit price may not represent the best total purchasing option if it involves unsuitable packaging, a mismatch in documentation, or an impractical delivery schedule. For a useful comparison, request offers against the same specification and commercial terms.
For initial project planning, separate the inquiry into evaluation quantity, development quantity, and any later scale-up requirement. Ask whether the supplier can support the quantity under consideration and whether the quoted lead time applies to the current lot or a future production or sourcing schedule. Confirm quote validity and the point at which delivery timing is committed. These steps help avoid treating an indicative price or timeline as a confirmed order commitment.
At Maison Chemical, we support B2B inquiries for 2-Chlorophenylboronic acid CAS 3900-89-8 as a chemical manufacturer, supplier, and exporter. To help us assess an inquiry, share your target quantity, required assay or impurity limits, destination, packaging preference, and document needs. We can confirm the applicable product information and commercial details for the specific request, subject to current availability and order conditions. Lot-specific quality and shipping documents should be reviewed before purchase and use.
2-Chlorophenylboronic acid CAS 3900-89-8 is an arylboronic acid commonly considered for Suzuki–Miyaura coupling and related synthetic work. The right purchase decision depends on matching the material’s identity, assay basis, impurity information, documentation, and delivery terms to the needs of your route. Start by defining your acceptance criteria, then request a lot-specific COA, safety information, and a quotation based on your quantity and destination. Contact Maison Chemical with those details to discuss product information, packaging, availability, and a project-appropriate offer.
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