A Buyer’s Guide to 2,4-Difluoro-3-methoxybenzoic acid CAS 178974-97-5: Specifications and Sourcing

2,4-Difluoro-3-methoxybenzoic acid, CAS 178974-97-5, is a substituted aromatic carboxylic acid that buyers may evaluate as a chemical intermediate or synthesis building block. Its identity is associated with a benzene ring bearing two fluorine substituents, one methoxy group, and one carboxylic acid group. For procurement, the key steps are to confirm identity and specification requirements, assess whether the offered material fits your process, and request a quote with clear quantity and documentation expectations. This guide explains what to check and how to prepare a practical supplier inquiry.

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At a glance

• Product: 2,4-Difluoro-3-methoxybenzoic acid
• CAS number: 178974-97-5
• Molecular formula: C₈H₆F₂O₃
• Molecular weight: approximately 188.13 g/mol
• Buyer priority: verify identity, assay or purity criteria, analytical documents, packaging, availability, and commercial terms before placing an order.

Who this guide is for

This guide is intended for procurement teams, research and development groups, process chemists, and manufacturers assessing this compound for a defined synthesis or development project. It is also useful when comparing supplier quotations or preparing a first inquiry for a specialty chemical. Requirements may differ between laboratory evaluation, route development, and production purchasing. We recommend aligning the requested specification with the actual process rather than relying on a generic product description.

Understanding the material

Structure and chemical identity

The compound is an aromatic carboxylic acid with fluorine atoms at the 2- and 4-positions and a methoxy substituent at the 3-position, relative to the carboxylic acid group. The supplied CAS number is a useful identifier for quotation and document review, but buyers should confirm that the name, CAS number, molecular formula, and analytical identity all match across the supplier’s documents. The molecular formula is C₈H₆F₂O₃, and its molecular weight is approximately 188.13 g/mol. These identifiers help distinguish the requested material from positional isomers or related substituted benzoic acids.

Role as a synthesis building block

The carboxylic acid functionality and substituted aromatic ring provide structural features that may be used in further chemical transformations. Depending on the route, a chemist may investigate the acid group or the substituted ring as part of a target molecule’s synthesis. Whether this specific compound is suitable depends on the reaction sequence, process conditions, and required impurity profile. We therefore recommend treating application fit as a project-specific technical question, not as a guaranteed result based only on the product name.

Specifications to review before purchase

A product listing may identify the compound without defining every parameter needed for your process. Ask the supplier for the current specification and available analytical documents, then compare them with your internal requirements. Do not assume that a quoted purity, test method, or packaging configuration applies unless it appears in the quotation or associated product documents. If your project has a critical limit, state it clearly before order confirmation.

Purity targets should be set by the buyer according to intended use and validated process needs. For example, a request for at least 98.0% assay can be used as a discussion point only if that level is appropriate for your project; it is not a statement of Maison Chemical’s standard grade or a guarantee for every lot. Ask the supplier to confirm the offered value, method, and lot-specific result in writing. Where a particular analytical method is required, specify it in the inquiry rather than assuming that different methods produce directly comparable results.

Matching the material to your application

Start with the role the compound will play in your chemistry. If it is an early-stage intermediate, you may prioritize identity confirmation, availability, and a fit-for-purpose assay; if it is intended for a tightly controlled process, you may need defined impurity limits, a validated acceptance method, or additional documentation. These are procurement considerations, not claims about a particular application outcome. Share enough non-confidential context for the supplier to understand the required grade, quantity, and delivery conditions.

Build a project-specific acceptance profile

Before requesting quotations, write down the minimum identity requirements, target assay, critical impurities if known, analytical documents, packaging needs, and receiving requirements. For an initial laboratory assessment, a buyer might request a sample in the range of 1–5 g, subject to supplier availability and applicable shipping rules. For scale-up or production, request a separate quotation for the anticipated order quantity and confirm whether the same specification and analytical package can be supplied. Treat these quantities as planning examples, not as standard pack sizes.

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Buyer selection framework

1. Confirm identity and specification

Compare the product name and CAS number across the quotation, specification, and analytical documents. Check that the supplier states the assay basis and test method, and clarify which values are release limits versus informational results. If your internal specification differs from the supplier’s standard offer, ask whether the supplier can review the requirement before you proceed. Resolve differences before purchase rather than during incoming inspection.

2. Evaluate documentation and communication

Ask what documents are available for the specific material and whether they can be reviewed before purchase. Confirm how lot identification will appear on packaging and accompanying documents, and how the supplier handles questions about a reported result. A responsive supplier should be able to clarify what is included in the offer without implying unsupported certifications or test capabilities. Keep document and specification requirements in the purchase record.

3. Compare commercial terms on a like-for-like basis

Price comparisons are meaningful only when the offered grade, quantity, packaging, documentation, and delivery terms are comparable. Request the minimum order quantity, available pack options, quotation validity, shipping terms, and estimated lead time for the quantity you need. Lead time and MOQ can vary with stock position, production planning, and destination, so ask for confirmation against your requested order rather than relying on a general estimate. Include any import, transport, or receiving constraints that could affect the purchase.

Pricing, MOQ, and lead-time considerations

Specialty chemical quotations may be affected by order size, specification requirements, packaging, availability, and delivery destination. A request for a non-standard assay limit or additional documentation may require a separate feasibility review and could affect the commercial offer. Ask suppliers to identify what is included in the quoted price and whether freight, taxes, or other charges are excluded. Confirm the expected dispatch or delivery schedule in writing before finalizing the order.

For budget planning, provide both your immediate requirement and likely follow-on demand where possible, while distinguishing confirmed quantities from estimates. This helps the supplier assess the request without treating a forecast as a firm purchase commitment. If you need a sample before a larger order, ask whether sample supply is available and whether its specification corresponds to the proposed commercial material. Confirm the relationship between sample, quotation, and future lot documentation directly with the supplier.

Supplier evaluation checklist

• Does the quotation identify 2,4-Difluoro-3-methoxybenzoic acid and CAS 178974-97-5?
• Are the offered assay, test method, and relevant limits stated clearly?
• Can the supplier provide lot-specific documentation appropriate to your review?
• Are MOQ, pack size, price basis, quotation validity, and delivery terms transparent?
• Can the supplier confirm availability and lead time for your requested quantity and destination?
• Are any special packaging, handling, or document requirements acknowledged before ordering?

At Maison Chemical, we support B2B inquiries for specialty chemicals and can discuss the requested identity, specification, quantity, documentation, and delivery requirements for this product. Share your target assay, intended order quantity, destination, and any required documents so we can review the request and provide a relevant quotation. If your project has a specific analytical or impurity requirement, include it in the initial inquiry to reduce avoidable clarification during purchasing.

Conclusion: practical next steps for sourcing

To source 2,4-Difluoro-3-methoxybenzoic acid CAS 178974-97-5 effectively, first confirm the identity and define a project-appropriate specification. Then compare suppliers on documented assay and test methods, available lot records, MOQ, packaging, price basis, and confirmed lead time—not on product name or headline price alone. The molecular formula C₈H₆F₂O₃ and molecular weight of approximately 188.13 g/mol provide useful identity checks, but they do not replace lot-specific verification. Send Maison Chemical your quantity, destination, target specification, and document needs to begin a focused B2B sourcing discussion.

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