Description

L-Tyrosinebutylesterhydrochloride is a protected derivative of the essential amino acid L-Tyrosine, where the carboxylic acid group is esterified with butanol and the amine is presented as a hydrochloride salt. This chemical modification enhances its lipophilicity and stability, making it a crucial building block in advanced organic synthesis. It is primarily utilized by research institutions and pharmaceutical manufacturers for the development of peptide-based therapeutics, enzyme inhibitors, and other bioactive molecules.

Application

• Pharmaceutical Intermediate: Serves as a key chiral synthon in the synthesis of complex peptide drugs and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used in proteomics and enzymology studies as a substrate or precursor for labeled tyrosine analogs.
• Peptide Synthesis: An essential protected amino acid derivative in solid-phase and solution-phase peptide synthesis (SPPS).
• Neuroscience Research: Employed in the study of neurotransmitter pathways and the synthesis of tyrosine-derived neuromodulators.
• Cosmetic Peptide Development: Acts as a precursor for signal peptides used in anti-aging and skin-repair cosmetic formulations.

Basic Information

Product Name	L-Tyrosinebutylesterhydrochloride
CAS No.	33494-11-0
Molecular Formula	C₁₃H₂₀ClNO₃
Molecular Weight	273.76 g/mol
Synonyms	L-Tyrosine butyl ester hydrochloride; (S)-2-Amino-3-(4-hydroxyphenyl)propanoic acid butyl ester hydrochloride; Butyl L-tyrosinate hydrochloride; H-Tyr-OBu.HCl; Tyrosine butyl ester HCl; L-Tyrosine O-butyl ester hydrochloride; 4-Hydroxy-L-phenylalanine butyl ester hydrochloride; Boc-Tyr-OBu (Note: This is a related protected form)
EINECS	Contact for details

Quality Control

Our L-Tyrosinebutylesterhydrochloride is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for pharmaceutical research and development. A Certificate of Analysis (COA) detailing purity, specific rotation, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent decomposition. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Specific Rotation	[α]²⁰/D: +X° to +Y° (c=1 in 1N HCl)
Chiral Purity (HPLC)	≥99.0%
Loss on Drying	≤1.0%
Residue on Ignition	≤0.1%
Heavy Metals	≤20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.