Description

D-Tryptophan is a high-purity, non-proteinogenic amino acid enantiomer essential for advanced biochemical research and specialized manufacturing processes. Its distinct stereochemistry makes it a critical chiral building block and a valuable standard for analytical method development. This product is primarily utilized by the pharmaceutical, nutraceutical, and life science research industries for applications requiring precise molecular configuration. We supply D-Tryptophan CAS NO 153-94-6 to meet the stringent quality demands of global B2B customers.

Application

• Pharmaceutical Intermediates: Serves as a key chiral precursor in the synthesis of specialized peptides, peptidomimetics, and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used as a standard and reagent in enzymatic studies, metabolic pathway analysis, and receptor-ligand binding assays.
• Nutraceutical Development: Employed in research for developing specialized dietary supplements and studying enantiomer-specific biological effects.
• Microbiology & Fermentation: Acts as a selective growth factor or metabolic probe in microbial culture media and bioprocess optimization.
• Analytical Chemistry: Functions as a high-purity reference standard for HPLC, LC-MS, and chiral chromatography method development and validation.
• Cosmetic Science: Investigated for potential use in advanced skincare formulations targeting specific biochemical pathways.

Basic Information

Product Name	D-Tryptophan
CAS No.	153-94-6
Molecular Formula	C11H12N2O2
Molecular Weight	204.23 g/mol
Synonyms	(R)-Tryptophan; D-(-)-Tryptophan; (R)-2-Amino-3-(1H-indol-3-yl)propanoic acid; (R)-1H-Indole-3-alanine; D-TRP; Right-handed tryptophan; (R)-α-Amino-1H-indole-3-propanoic acid; (R)-β-3-Indolylalanine
EINECS	205-819-9

Quality Control

Our D-Tryptophan is manufactured under a strict quality management system. Each batch is tested to ensure it meets high-purity standards suitable for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, chiral purity, and impurity profiles is provided with every shipment. We can support compliance requirements for various pharmacopeial standards (USP, EP, JP) upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). The product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to avoid moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Chiral Purity (HPLC)	≥ 99.0% (D-Isomer)
Specific Rotation	-30.0° to -33.0° (c=1 in H2O)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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