L-Ethionine - ≥99% , CAS No.13073-35-3

CAS: 13073-35-3 Cat. No.: E117218 Formula: C6H13NO2S Molecular Weight: 163.24 EC Number: 235-966-4
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
EINECS 235-966-4 | AKOS016844009 | NCIStruc2_000170 | Q5403506 | HOMOCYSTEINE S-ETHYL ETHER | HSDB 5080 | L-Ethionine, 98% | BDBM50179693 | NSC-97927 | NCGC00014018-02 | NSC 82393 | ETHIONINE [HSDB] | NCIStruc1_000100 | (2S)-2-amino-4-(ethylsulfanyl)butan
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
★
Size
Germany (EU)
USA*
Price
Qty
100mg
E117218-100mg
—
3 In stock
€75.41
250mg
E117218-250mg
—
1 In stock
€150.03
1g
E117218-1g
—
3 In stock
€479.77
Enter a quantity for the sizes you want to add.
🧪
Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

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

📚

Literature proof

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

Specifications

Synonyms
EINECS 235-966-4 | AKOS016844009 | NCIStruc2_000170 | Q5403506 | HOMOCYSTEINE S-ETHYL ETHER | HSDB 5080 | L-Ethionine, 98% | BDBM50179693 | NSC-97927 | NCGC00014018-02 | NSC 82393 | ETHIONINE [HSDB] | NCIStruc1_000100 | (2S)-2-amino-4-(ethylsulfanyl)butan
Specifications & Purity
≥99%
Biochemical and Physiological Mechanisms
Methionine analogs that interfere with standard DNA methylation and other methylation pathways, leading to pancreatic toxicity and liver cancer. But in animal studies, it has also been shown to synchronize activity with methionine depletion to prevent met
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/504753312
Canonical Smiles
CCSCCC(C(=O)O)N
IUPAC Name
(2S)-2-amino-4-ethylsulfanylbutanoic acid
InChIKey
GGLZPLKKBSSKCX-YFKPBYRVSA-N
INCHI
1S/C6H13NO2S/c1-2-10-4-3-5(7)6(8)9/h5H,2-4,7H2,1H3,(H,8,9)/t5-/m0/s1
Isomeric SMILES
CCSCC[C@@H](C(=O)O)N
WGK Germany
3
RTECS
ES6825300
Molecular Weight
163.24
Reaxy-Rn
1722529
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1722529&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
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassAmino acids, peptides, and analogues
Intermediate Tree Nodes Amino acids and derivatives - Alpha amino acids and derivatives - Alpha amino acids
Direct ParentL-alpha-amino acids
Alternative Parents Thia fatty acids  Amino acids  Sulfenyl compounds  Monocarboxylic acids and derivatives  Dialkylthioethers  Carboxylic acids  Organopnictogen compounds  Organic oxides  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents L-alpha-amino acid - Thia fatty acid - Fatty acid - Fatty acyl - Amino acid - Carboxylic acid - Monocarboxylic acid or derivatives - Thioether - Sulfenyl compound - Dialkylthioether - Carbonyl group - Organic nitrogen compound - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Amine - Primary aliphatic amine - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom.
External Descriptors S-ethylhomocysteine
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
CACNA2D1 Tclin Voltage-gated calcium channel alpha2/delta subunit 1 (266 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2D6 Tclin Cytochrome P450 2D6 (33882 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP1A2 Tchem Cytochrome P450 1A2 (26471 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2C9 Tchem Cytochrome P450 2C9 (32119 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP2C19 Tchem Cytochrome P450 2C19 (29246 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CYP3A4 Tclin Cytochrome P450 3A4 (53859 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Rattus norvegicus (775804 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.

7 results found

Lot NumberCertificate TypeDateItem
F2616032Certificate of AnalysisJun 25, 2026 E117218
E1916107Certificate of AnalysisMar 08, 2023 E117218
G2213281Certificate of AnalysisMay 31, 2022 E117218
G2213282Certificate of AnalysisMay 31, 2022 E117218
G2213283Certificate of AnalysisMay 31, 2022 E117218
G2516023Certificate of AnalysisMay 31, 2022 E117218
I2511152Certificate of AnalysisMay 31, 2022 E117218
Chemical and Physical Properties
SolubilityAqueous Acid (Slightly), Water (Slightly)
x_specific_rotation22 ° (C=1, 1mol/L HCl)
x_melt_point_char280°C
Molecular Weight163.240 g/mol
XLogP3-1.500
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count4
Rotatable Bond Count5
Exact Mass163.067 Da
Monoisotopic Mass163.067 Da
Topological Polar Surface Area88.600 Ų
Heavy Atom Count10
Formal Charge0
Complexity108.000
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
FAQs and Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What is the purity of this product?
This product is supplied at ≥99% purity (chemical assay). Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at ?20 °C. Freezer storage is required to maintain the specified shelf life.
How is this product shipped?
This product ships in an insulated container with ice pads. Unpack on arrival and transfer it to the storage condition stated above.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 13073-35-3, the molecular formula is C6H13NO2S, and the molecular weight is 163.24 g/mol. InChIKey GGLZPLKKBSSKCX-YFKPBYRVSA-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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