L-Tryptophan - PharmPure™,USP,JP,BP,Ph.Eur. , CAS No.73-22-3

CAS: 73-22-3 Cat. No.: L774650 Formula: C11H12N2O2 Molecular Weight: 204.23 Beilstein Registry Number: 86197 EC Number: 200-795-6
AVAILABLE TO ORDER
GRADE & PURITY PharmPure™ ? PharmPure™ — Aladdin's line of biopharmaceutical raw and starting materials. Use for pharma manufacturing inputs needing high purity and documentation. USP ? United States Pharmacopeia grade — meets USP monograph specs for pharmaceutical use. Use for drug manufacturing, QC, and applications requiring US compendial compliance. JP ? Japanese Pharmacopoeia grade — conforms to JP monograph standards. Use for pharmaceutical products subject to Japanese regulatory requirements. BP ? British Pharmacopoeia grade — conforms to BP monograph requirements. Use for pharmaceutical products marketed under UK/BP regulatory standards. Ph.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance.
Synonyms
(S)-2-Amino-3-(3-indolyl)propionic acid | h-Trp-oh | L-Trytophan
Storage
Protected from light,Room temperature
Shipped In
Normal
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Size
USA
Germany (EU)*
Price
Qty
25g
L774650-GMP-25g
Made to order · 8–12 wks
$33.90
100g
L774650-GMP-100g
Made to order · 8–12 wks
$69.90
500g
L774650-GMP-500g
Made to order · 8–12 wks
$269.90
Enter a quantity for the sizes you want to add.
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Why this grade

PharmPure™,USP,JP,BP,Ph.Eur. BP,JP,Ph.Eur.,PharmPure™,USP for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Protected from light,Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 440 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

EMPROVE®EXPERT Ph Eur,BP,JP,USP

Light sensitive. Quickly heat up to 289 ℃ for decomposition. Dissolved in hot ethanol, hydroxide alkali solution, and dilute hydrochloric acid, slightly soluble in water, insoluble in chloroform and ether. The aqueous solution exhibits a weak acidic reaction.

Specifications

Synonyms
(S)-2-Amino-3-(3-indolyl)propionic acid | h-Trp-oh | L-Trytophan
Specifications & Purity
PharmPure™,USP,JP,BP,Ph.Eur.
Biochemical and Physiological Mechanisms
Tryptophan (Trp) is a heterocyclic compound that is an essential amino acid associated with growth, reproduction, and immunity. Increasing the availability of tryptophan is necessary for regulating emotions, cognition, and behavior. The brain's uptake of
Storage
Protected from light,Room temperature
Shipped In
Normal
Grade
BP, JP, Ph.Eur., PharmPure™, USP
Names and Identifiers
Canonical Smiles
C1=CC=C2C(=C1)C(=CN2)CC(C(=O)O)N
IUPAC Name
(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
InChIKey
QIVBCDIJIAJPQS-VIFPVBQESA-N
INCHI
1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1
Isomeric SMILES
C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)N
Molecular Weight
204.23
Beilstein
86197
Reaxy-Rn
86196
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=86196&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassIndoles and derivatives
SubclassIndolyl carboxylic acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentIndolyl carboxylic acids and derivatives
Alternative Parents L-alpha-amino acids  3-alkylindoles  Aralkylamines  Substituted pyrroles  Benzenoids  Heteroaromatic compounds  Amino acids  Monocarboxylic acids and derivatives  Carboxylic acids  Azacyclic compounds  Organopnictogen compounds  Organic oxides  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Indolyl carboxylic acid derivative - Alpha-amino acid - Alpha-amino acid or derivatives - L-alpha-amino acid - 3-alkylindole - Indole - Aralkylamine - Benzenoid - Substituted pyrrole - Heteroaromatic compound - Pyrrole - Amino acid or derivatives - Amino acid - Carboxylic acid derivative - Carboxylic acid - Monocarboxylic acid or derivatives - Azacycle - Amine - Primary aliphatic amine - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organic nitrogen compound - Carbonyl group - Organonitrogen compound - Organooxygen compound - Primary amine - Organopnictogen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as indolyl carboxylic acids and derivatives. These are compounds containing a carboxylic acid chain (of at least 2 carbon atoms) linked to an indole ring.
External Descriptors Common amino acids
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

1 results found

Lot NumberCertificate TypeDateItem
GMC2613137Certificate of AnalysisMar 17, 2026 L774650
Chemical and Physical Properties
Solubility10g/L
Sensitivitylight sensitive
Specific Rotation[α]-30.5 to -32.5 deg(C=1, H2O)
Melt Point(°C)277°C
Molecular Weight204.220 g/mol
XLogP3-1.100
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass204.09 Da
Monoisotopic Mass204.09 Da
Topological Polar Surface Area79.100 Ų
Heavy Atom Count15
Formal Charge0
Complexity245.000
Isotope Atom Count0
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
GMP
From Spec to Bench: Understanding and Using USP Grade Reagents
JP Grade Reagents Explained
BP grade: The British Pharmacopoeia Standard, Demystified
11 Common Methods for Protein Concentration Determination
Niacin (Vitamin B3): Structural Features, Metabolic Roles, and Application Landscape
NAD (Nicotinamide Adenine Dinucleotide): From a Metabolic Coenzyme to Homeostatic Regulation and Application Targets
Indole Product Navigation: How N-Position State, the C3 Connection Handle, and Core Scaffold Variants Map to Synthetic Interfaces and Research Uses (Tables A–E)
β-Acyloxy Alkenyl Amides (AAAs): A New Approach to Amide Bond and Peptide Bond Construction Worth Attention
Silicon Reagent-Assisted Peptide Synthesis: Research Progress and Methodological Value of Peptide Bond Formation from Unprotected Substrates
From Analytical Instrument to Synthetic Platform: A New Strategy for Reconstructing Automated Flow Solid-Phase Peptide Synthesis with Standard Analytical HPLC
Low-Racemization Control in Peptide Synthesis: An Inverse N→C Peptide Synthesis Strategy via Activated α-Aminoesters
Methods and Applications for the Determination of Amino Acid Content and Composition
Analysis of Hydrolyzed Pearl as a Cosmetic Raw Material: Preparation Process, Active Components, and Skincare Formulation Applications
Sources, Host-Regulatory Mechanisms, and Tumor-Immune Effects of Gut Microbiota-Derived Metabolites
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What does PharmPure? mean?
PharmPure? refers to material produced and controlled to meet the requirements of pharmaceutical manufacturing and regulated workflows. Depending on the specific designation (GMP, RUO, Bio-medical, Injection grade, etc.), this may include controlled manufacturing environments, validated processes, audit-ready documentation and traceability.
What does USP mean?
USP indicates that the material complies with the published monographs of the relevant pharmacopoeia (USP). Specifications include identity, assay, impurity limits, residual solvents and other tests defined in the monograph. USP-compliant material is suitable for pharmacopoeia-compliant pharmaceutical use, including pharmaceutical manufacturing, QC and regulatory submission.
How should this product be stored?
Store at room temperature, protected from light. The material is light-sensitive — keep it in its original opaque or amber container.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 73-22-3, the molecular formula is C11H12N2O2, and the molecular weight is 204.23 g/mol. InChIKey QIVBCDIJIAJPQS-VIFPVBQESA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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