1-Methyl-L-tryptophan - Moligand™, ≥95% , Inhibitor of indoleamine 2;3-dioxygenase 1, CAS No.21339-55-9, Inhibitor of indoleamine 2;3-dioxygenase 1

CAS: 21339-55-9 Cat. No.: M138479 Molecular Weight: 218.25
AVAILABLE TO ORDER
GRADE & PURITY Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%
Synonyms
EN300-7398929 | (S)-2-amino-3-(1-methyl-1H-indol-3-yl)propanoic acid | BDBM50241727 | 1-LMT | 1-L-MT | A51061 | H-Trp(1-Me)-OH | TRYPTOPHAN, 1-METHYL-, L | XD0FY1J13B | Q-100266 | A815282 | EXL | (2S)-2-amino-3-(1-methyl-3-indolyl)propanoic acid | 1-Methy
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
M138479-250mg
3
$11.90
1g
M138479-1g
2
$44.90
5g
M138479-5g
3
$211.90
25g
M138479-25g
1
$671.90
Enter a quantity for the sizes you want to add.
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Why this grade

Moligand™, ≥95% Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
EN300-7398929 | (S)-2-amino-3-(1-methyl-1H-indol-3-yl)propanoic acid | BDBM50241727 | 1-LMT | 1-L-MT | A51061 | H-Trp(1-Me)-OH | TRYPTOPHAN, 1-METHYL-, L | XD0FY1J13B | Q-100266 | A815282 | EXL | (2S)-2-amino-3-(1-methyl-3-indolyl)propanoic acid | 1-Methy
Specifications & Purity
Moligand™, ≥95%
Storage
Room temperature
Shipped In
Normal
Grade
Moligand™
Action Type
INHIBITOR
Mechanism of action
Inhibitor of indoleamine 2;3-dioxygenase 1
Purity
≥95%
Names and Identifiers
Pubchem Sid504759828
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504759828
Canonical SmilesCN1C=C(C2=CC=CC=C21)CC(C(=O)O)N
IUPAC Name(2S)-2-amino-3-(1-methylindol-3-yl)propanoic acid
InChIKeyZADWXFSZEAPBJS-JTQLQIEISA-N
INCHI1S/C12H14N2O2/c1-14-7-8(6-10(13)12(15)16)9-4-2-3-5-11(9)14/h2-5,7,10H,6,13H2,1H3,(H,15,16)/t10-/m0/s1
Isomeric SMILES CN1C=C(C2=CC=CC=C21)C[C@@H](C(=O)O)N
WGK Germany 3
Molecular Weight 218.25
Reaxy-Rn 20071
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=20071&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 3-alkylindoles  L-alpha-amino acids  N-alkylindoles  Aralkylamines  Benzenoids  N-methylpyrroles  Heteroaromatic compounds  Amino acids  Carboxylic acids  Azacyclic compounds  Monocarboxylic acids and derivatives  Hydrocarbon derivatives  Carbonyl compounds  Organopnictogen compounds  Organic oxides  Monoalkylamines  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Indolyl carboxylic acid derivative - Alpha-amino acid - Alpha-amino acid or derivatives - N-alkylindole - L-alpha-amino acid - 3-alkylindole - Indole - Aralkylamine - N-methylpyrrole - 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 - Organopnictogen compound - Organonitrogen compound - Organooxygen compound - Primary amine - 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 Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
IDO1 Tchem Indoleamine 2,3-dioxygenase 1 (2 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
DHFR Tclin Dihydrofolate reductase (3072 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
A-375 (9258 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
HEK293 (82097 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
MDA-MB-231 (73002 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
IDO1 Tchem Indoleamine 2,3-dioxygenase (6650 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Tdo2 Tryptophan 2,3-dioxygenase (8 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mus musculus (284745 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Lewis lung carcinoma cell line (1243 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
H22 (575 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
B16-F10 (4610 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Ido1 Indoleamine 2,3-dioxygenase 1 (313 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
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.

8 results found

Lot NumberCertificate TypeDateItem
F2609710Certificate of AnalysisJun 11, 2026 M138479
A2619036Certificate of AnalysisJan 27, 2026 M138479
D2218036Certificate of AnalysisOct 29, 2025 M138479
D2218040Certificate of AnalysisOct 29, 2025 M138479
D2218041Certificate of AnalysisOct 29, 2025 M138479
D2218046Certificate of AnalysisOct 29, 2025 M138479
H2311023Certificate of AnalysisMay 12, 2025 M138479
J1526086Certificate of AnalysisFeb 16, 2022 M138479
Chemical and Physical Properties
Specific Rotation[α][α]24/D −8.0°, c = 2 in acetic acid
Melt Point(°C)242-245 °C (lit.)
Molecular Weight218.250 g/mol
XLogP3-1.300
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass218.106 Da
Monoisotopic Mass218.106 Da
Topological Polar Surface Area68.300 Ų
Heavy Atom Count16
Formal Charge0
Complexity270.000
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
Citations of This Product
References
1. Ning Wang, Jie Zhang, Qiao Li, Hui Xu, Geng Chen, Zhiyong Li, Difa Liu, Xin Yang.  (2019)  Discovery of potent indoleamine 2,3-dioxygenase (IDO) inhibitor from alkaloids in Picrasma quassioides by virtual screening and in vitro evaluation.  FITOTERAPIA,      [PMID:30654128] [10.1016/j.fitote.2019.01.005]
Solution Calculators
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