Is benzocaine hydrochloride the same material as benzocaine base?

No. Benzocaine hydrochloride, CAS 23239-88-5, is the hydrochloride salt, while benzocaine base is CAS 94-09-7. They differ in salt form, molecular-weight basis, solubility and assay expression. Specify the exact form and analytical basis rather than converting results as though they were the same material.

Does CAS 23239-88-5 by itself establish pharmaceutical or compendial grade?

No. The CAS confirms chemical identity, not compliance with a pharmacopoeia or authorization for a particular use. State the intended application and required standard, then review the exact grade specification, assay basis, impurity and residual-solvent controls, manufacturing documents, COA, TDS and SDS before qualification.

Benzocaine Hydrochloride CAS 23239-88-5

Benzocaine Hydrochloride (CAS 23239-88-5), also called Ethyl 4-aminobenzoate hydrochloride, is the hydrochloride salt of ethyl 4-aminobenzoate. It is used as a salt-form intermediate or reference material in pharmaceutical, formulation and analytical work. Confirm identity, assay, water, related substances, residual solvents and physical form against the current COA, TDS and SDS.

CAS: 23239-88-5
Synonyms: Benzocaine Hydrochloride, Benzocaine HCl, Ethyl 4-aminobenzoate hydrochloride, 4-(Ethoxycarbonyl)anilinium chloride
Einecs: Not confirmed; verify supplier SDS
Molecular Formula: C₉H₁₂ClNO₂
Grade: Specified by assay, water, appearance, related substances and physical form; see the current COA.
Package: Confirm container, light or moisture protection, net weight, storage and transport against the current COA and SDS.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Correct identity	Benzocaine hydrochloride; ethyl 4-aminobenzoate hydrochloride
CAS number	23239-88-5
Formula / molecular weight	C₉H₁₂ClNO₂ / 201.65 g/mol
Identity boundary	The hydrochloride salt is distinct from benzocaine free base, CAS 94-09-7
Commercial specification	Assay, water, appearance, related substances and physical form follow the offered grade and analytical methods
Regulatory boundary	A chemical identity or COA alone does not establish pharmacopeial compliance, drug approval or suitability for human use

Applications and grade selection

Benzocaine Hydrochloride may be evaluated as a salt-form intermediate or reference material in controlled pharmaceutical, formulation and analytical work. The selected form should match the buyer’s process, solubility target, analytical method and regulatory file.

Confirm whether the project requires the hydrochloride salt or benzocaine free base before requesting a sample.
Compare identity, assay, water, related substances, residual solvents and dissolution or process performance against the approved specification.
For regulated work, define the required compendial, GMP, change-control, traceability and destination-market documents before quotation.

Storage and handling

Keep the material tightly closed and protected from moisture, excessive heat and light under the conditions stated in the current COA, TDS or SDS.

Safety, documentation and procurement

Use suitable containment, gloves, eye protection and dust control in accordance with the current SDS and site risk assessment. A purchase inquiry should state the exact salt form, specification, analytical methods, end use, quantity, packaging, destination and documentation requirements.

FAQ - Technical & Supply Chain

Q:
Is benzocaine hydrochloride the same material as benzocaine base?

A: No. Benzocaine hydrochloride, CAS 23239-88-5, is the hydrochloride salt, while benzocaine base is CAS 94-09-7. They differ in salt form, molecular-weight basis, solubility and assay expression. Specify the exact form and analytical basis rather than converting results as though they were the same material.
Q:
Does CAS 23239-88-5 by itself establish pharmaceutical or compendial grade?

A: No. The CAS confirms chemical identity, not compliance with a pharmacopoeia or authorization for a particular use. State the intended application and required standard, then review the exact grade specification, assay basis, impurity and residual-solvent controls, manufacturing documents, COA, TDS and SDS before qualification.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

Storage & Shipping

Product-specific conditions are confirmed before order.

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