(S)-(+)-2-Amino-4-phenylbutyrate ethyl ester
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**English Name:** L-Homophenylalanine Ethyl Ester Hydrochloride; (+)-Ethyl (S)-2-Amino-4-phenylbutyrate Hydrochloride; (S)-(+)-2-Amino-4-phenylbutyric Acid Ethyl Ester Hydrochloride
**Other Names:** (S)-(+)-2-Amino-4-phenylbutyric Acid Ethyl Ester
**CAS Number:** 90891-21-7
**Molecular Formula:** Câ‚â‚‚Hâ‚₇NO₂·HCl
**Molecular Weight:** 243.73 g/mol
**Grade:** Biochemical Research Grade
**Purity:** ≥98.0%
**Specific Optical Rotation:** +25 to +27° (c = 1, CHCl₃)
**Appearance:** White Powder
**Melting Point:** 159–163°C
**Usage:** Used in biochemical research and as a chiral building block in organic synthesis
**Storage:** Store at room temperature (RT), away from moisture and light
This compound is a chiral amino acid ester derivative, commonly used in the synthesis of peptides and pharmaceutical intermediates. Its high optical purity makes it ideal for stereocontrolled reactions. The hydrochloride form enhances solubility and stability, making it suitable for various laboratory applications. Always handle with care and follow standard safety protocols when working with chemical substances.