Description

Poly(L-Aspartyl-L-Phenylalanine) is a synthetic dipeptide composed of aspartic acid and phenylalanine. This compound is of significant commercial interest as a key intermediate in the synthesis of the high-intensity sweetener aspartame. It serves a critical role for manufacturers in the food, beverage, and pharmaceutical industries requiring a reliable, high-purity precursor for downstream processing.

Application

• Primary Intermediate for Aspartame Synthesis: The most significant application, serving as the direct precursor in the chemical or enzymatic production of the artificial sweetener aspartame.
• Food & Beverage Ingredient Manufacturing: Supplied to producers of low-calorie and sugar-free products, including soft drinks, tabletop sweeteners, desserts, and dairy products.
• Pharmaceutical Excipient & Intermediate: Used in the formulation of chewable tablets and liquid medications where a sweet taste mask is required, or as a building block for peptide-based active pharmaceutical ingredients (APIs).
• Nutritional Supplement Precursor: Employed in the production of specialized dietary supplements and clinical nutrition products.
• Biochemical & Peptide Research: Utilized as a standard or starting material in academic and industrial research focused on dipeptide chemistry, sweet taste receptor studies, and enzymatic catalysis.
• Flavor Enhancement & Modifier: Acts in synergy with other sweeteners and flavors to improve the taste profile and temporal characteristics of final food formulations.

Basic Information

Product Name	Poly(L-Aspartyl-L-Phenylalanine)
CAS No.	76022-68-9
Molecular Formula	C14H18N2O5
Molecular Weight	294.30 g/mol
Synonyms	Asp-Phe; L-Aspartyl-L-phenylalanine; N-L-α-Aspartyl-L-phenylalanine; 3-Amino-N-(1-carboxy-2-phenylethyl)-4-oxosuccinamic acid; Aspartame precursor; APM intermediate; Dipeptide sweetener intermediate; α-L-Aspartyl-L-phenylalanine
EINECS	Contact for details

Quality Control

Our Poly(L-Aspartyl-L-Phenylalanine) is produced under a strict quality management system. Each batch is tested to ensure it meets stringent specifications for purity, identity, and composition, suitable for food and pharmaceutical applications. A comprehensive Certificate of Analysis (COA) documenting results for assay, chiral purity, and specific impurities is provided with every shipment. We can support compliance requirements for FCC (Food Chemicals Codex) and other relevant food-grade standards.

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 material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent clumping and degradation. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% L,L-isomer
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.2%
Heavy Metals (as Pb)	≤ 10 ppm
Specific Rotation	Contact for details

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