Description

4-Sulfonic Acid-L-Phenylalanine is a functionalized amino acid derivative where a sulfonic acid group is introduced to the aromatic ring of L-phenylalanine. This modification imparts strong water solubility and acidic character, making it a valuable intermediate for synthesizing more complex bioactive molecules and specialty chemicals. It is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical and fine chemical sectors for applications in peptide synthesis and as a building block for novel compounds.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel peptide-based drugs and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used in proteomics and enzymology studies as a modified amino acid to investigate protein structure and function.
• Fine Chemical Synthesis: Serves as a precursor for creating surfactants, chelating agents, and other specialty chemicals with sulfonate groups.
• Chiral Pool Synthesis: Utilized as a source of chirality for the asymmetric synthesis of complex organic molecules.
• Reference Standard: Employed as an analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	4-Sulfonic Acid-L-Phenylalanine
CAS No.	34023-49-9
Molecular Formula	C9H11NO6S
Molecular Weight	261.25 g/mol
Synonyms	L-Phenylalanine-4-sulfonic acid; (2S)-2-Amino-3-(4-sulfophenyl)propanoic acid; 4-Sulfo-L-phenylalanine; 4-Sulfophenylalanine; Phenylalanine sulfonic acid; 4-SP; 4-Sulfophenylalanine, L-; 2-Amino-3-(4-sulfophenyl)propanoic acid
EINECS	Contact for details

Quality Control

Our 4-Sulfonic Acid-L-Phenylalanine is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and synthesis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	Specific range upon request
Water Content (KF)	≤ 2.0%
Heavy Metals	< 20 ppm
Residue on Ignition	< 0.5%

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