Chemical Identity and Structure

(R)-1-(2,6-Difluorophenyl)ethanamine hydrochloride (SKU: E692626) is the hydrochloride salt of a primary chiral amine bearing an R-configured stereocenter at the benzylic carbon. The parent free base contains a phenyl ring substituted with fluorine atoms at both the 2- and 6-positions (ortho, ortho'), which imparts distinctive steric and electronic properties compared to non-fluorinated or mono-fluorinated analogs.

The ortho-difluoro substitution pattern forces the aryl ring into a near-perpendicular orientation relative to the amine-bearing carbon due to steric interactions, influencing conformational preferences and binding geometry in biological or catalytic contexts. Fluorine substituents also significantly increase the metabolic stability of the aromatic ring and modulate the basicity and lipophilicity of the molecule — properties highly valued in medicinal chemistry lead optimization.

As a hydrochloride salt, the compound offers improved hygroscopic stability, crystallinity, and ease of weighing relative to the free amine, making it practical for routine laboratory use.

Handling, Safety, and Storage Guidelines

Personal Protective Equipment (PPE): When handling (R)-1-(2,6-Difluorophenyl)ethanamine hydrochloride, researchers should wear appropriate PPE including nitrile gloves, safety goggles, and a laboratory coat. Because the compound is a primary amine salt, inhalation of dust should be avoided; work in a well-ventilated area or fume hood is strongly recommended.

Handling Precautions: Avoid contact with skin, eyes, and mucous membranes. In case of skin or eye contact, flush immediately with copious amounts of water and seek medical advice. Do not eat, drink, or smoke in areas where the compound is in use. Consult the Safety Data Sheet (SDS) provided by Aladdin Scientific before use for complete hazard information.

Storage Conditions: Store the compound in a tightly sealed container in a cool, dry location away from direct light and sources of moisture. Elevated humidity may cause the hydrochloride salt to clump or degrade. Segregate from strong oxidizers, bases, and reactive halogenating agents. Recommended storage temperature should be confirmed from the product SDS or label; typical guidance for such salts is 2–8 °C or room temperature under desiccation.

Disposal: Dispose of waste material in accordance with local, regional, and national regulations governing chemical waste. Do not pour down the drain without prior treatment and regulatory approval.

Applications in Chiral Synthesis and Medicinal Chemistry

(R)-1-(2,6-Difluorophenyl)ethanamine hydrochloride serves as a versatile chiral building block and resolving agent in synthetic chemistry. Its well-defined R-stereocenter makes it suitable for applications where enantiopure starting materials are required to access stereochemically defined target molecules.

Pharmaceutical Intermediate Synthesis: Chiral benzylic amines bearing fluorinated aryl groups are frequently encountered as core scaffolds or key intermediates in the synthesis of CNS-active compounds, kinase inhibitors, and other drug candidates. The 2,6-difluoro substitution is particularly useful in medicinal chemistry programs targeting protein binding pockets, where the steric bulk and metabolic stability of the fluorinated ring are advantageous.

Asymmetric Synthesis: As an enantiopure amine, this compound can be employed in the formation of chiral imines, amides, and sulfonamides that serve as intermediates or directing groups in asymmetric transformations. It can also participate in chiral resolution strategies when paired with racemic acid partners.

Agrochemical Research: Fluorinated chiral amines are increasingly important in the discovery of novel agrochemical active ingredients, where enantioselectivity profoundly affects biological activity and environmental fate.

Quality, Purity, and Procurement Considerations

For research applications, the purity and enantiomeric excess (ee) of chiral amine reagents are critical parameters. Researchers should verify the certificate of analysis (CoA) supplied with each lot of (R)-1-(2,6-Difluorophenyl)ethanamine hydrochloride (E692626) to confirm identity, purity, and ee before use in sensitive asymmetric reactions.

Analytical Methods: Identity can be confirmed by NMR spectroscopy (¹H and ¹³C) and mass spectrometry. Chiral purity is typically assessed by chiral HPLC or by optical rotation measurement against a reference value. Chemical purity is evaluated by HPLC or GC with appropriate standards.

Procurement Tips: When ordering through Aladdin Scientific, reference SKU E692626 to ensure the correct enantiomer and salt form is supplied. For large-scale or GMP-adjacent applications, inquire about available lot sizes and additional analytical documentation. Store procurement records and CoAs with your laboratory's chemical inventory system for traceability and compliance purposes.