Description

L-Tyrosine Butyl Ester is a protected derivative of the essential amino acid L-Tyrosine, where the carboxylic acid group is esterified with a butyl group. This modification enhances its lipophilicity and stability, making it a crucial building block in advanced organic synthesis and pharmaceutical research. It is primarily utilized by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for developing peptide-based therapeutics, enzyme inhibitors, and other bioactive compounds.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of peptide drugs, hormone analogs, and complex bioactive molecules.
• Biochemical Research: Used in proteomics and enzymology studies as a substrate or a modified amino acid building block.
• Agrochemical Synthesis: Serves as an intermediate in the development of novel pesticides and plant growth regulators.
• Peptide Synthesis (SPPS): Employed in solid-phase peptide synthesis to incorporate tyrosine residues with a protected carboxyl group.
• Cosmetic Actives: Potential intermediate for synthesizing peptide-based anti-aging or skin-conditioning agents.
• Chemical Biology Probes: Useful for creating labeled or tagged tyrosine derivatives for tracking biological pathways.

Basic Information

Product Name	L-Tyrosine Butyl Ester
CAS No.	6292-90-6
Molecular Formula	C₁₃H₁₉NO₃
Molecular Weight	237.29 g/mol
Synonyms	L-Tyrosine Butyl Ester; Butyl L-tyrosinate; (S)-2-Amino-3-(4-hydroxyphenyl)propanoic acid butyl ester; Tyrosine butyl ester; H-Tyr-OBu; Boc-Tyr-OBut; Fmoc-Tyr(tBu)-OH (related protected form); 4-Hydroxy-L-phenylalanine butyl ester
EINECS	Contact for details

Quality Control

Our L-Tyrosine Butyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification and impurity profiling, to ensure it meets the high standards required for research and synthesis applications. A Certificate of Analysis (COA) detailing purity, identity, and specific test results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Optical Rotation [α]²⁰D	-8.0° to -12.0° (c=1 in 1N HCl)
Chiral Purity (HPLC)	≥99.0% (L-isomer)
Loss on Drying	≤1.0%
Heavy Metals	≤20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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