S-(2-Aminoethyl)-L-cysteine hydrochloride - ≥98% , CAS No.4099-35-8

CAS: 4099-35-8 Cat. No.: S170219 Molecular Weight: 200.69 PubChem CID: 16218879
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
NSC-186915 | LJ 226 | Thialysine hydrochloride | H-Cys(aminoethyl)-OH HCl | NSC 186915 | S-(2-Aminoethyl)-l-cysteine, HCl | Thialysine HCl | WPH5RH5BID | Thialysine (hydrochloride)
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
S170219-250mg
2

$47.90

$71.90
Save $24.00 (33.38%)
1g
S170219-1g
2

$120.90

$181.90
Save $61.00 (33.53%)
5g
S170219-5g
1

$542.90

$814.90
Save $272.00 (33.38%)
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
NSC-186915 | LJ 226 | Thialysine hydrochloride | H-Cys(aminoethyl)-OH HCl | NSC 186915 | S-(2-Aminoethyl)-l-cysteine, HCl | Thialysine HCl | WPH5RH5BID | Thialysine (hydrochloride)
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
S-(2-Aminoethyl)-L-cysteine (AEC) hydrochloride is used as a lysine analogue for comparative analysis with other lysine analogues. S-(2-Aminoethyl)-L-cysteine is an alternative substrate useful for characterizing lysine cyclodeaminase from Streptomyces pr
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Pubchem Sid488199329
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488199329
Canonical SmilesC(CSCC(C(=O)O)N)N.Cl
IUPAC Name(2R)-2-amino-3-(2-aminoethylsulfanyl)propanoic acid;hydrochloride
InChIKeyCVHKULVNPGAEQM-WCCKRBBISA-N
INCHI1S/C5H12N2O2S.ClH/c6-1-2-10-3-4(7)5(8)9;/h4H,1-3,6-7H2,(H,8,9);1H/t4-;/m0./s1
Isomeric SMILES C(CSC[C@@H](C(=O)O)N)N.Cl
PubChem CID 16218879
Molecular Weight 200.69

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 - Cysteine and derivatives
Direct ParentL-cysteine-S-conjugates
Alternative Parents L-alpha-amino acids  Amino acids  Sulfenyl compounds  Monocarboxylic acids and derivatives  Dialkylthioethers  Carboxylic acids  Organopnictogen compounds  Organic zwitterions  Organic oxides  Organic chloride salts  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents L-cysteine-s-conjugate - Alpha-amino acid - L-alpha-amino acid - Amino acid - Carboxylic acid - Monocarboxylic acid or derivatives - Thioether - Sulfenyl compound - Dialkylthioether - Organic salt - Organic zwitterion - Carbonyl group - Amine - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic nitrogen compound - Primary aliphatic amine - Organic chloride salt - Organic oxygen compound - Hydrocarbon derivative - Organopnictogen compound - Organic oxide - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as l-cysteine-s-conjugates. These are compounds containing L-cysteine where the thio-group is conjugated.
External Descriptors Not available
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.

8 results found

Lot NumberCertificate TypeDateItem
E2315481Certificate of AnalysisFeb 05, 2026 S170219
E2315482Certificate of AnalysisFeb 05, 2026 S170219
E2315490Certificate of AnalysisFeb 05, 2026 S170219
E2315495Certificate of AnalysisFeb 05, 2026 S170219
E2315526Certificate of AnalysisFeb 05, 2026 S170219
E2430487Certificate of AnalysisApr 13, 2024 S170219
E2430518Certificate of AnalysisApr 13, 2024 S170219
E2315483Certificate of AnalysisApr 27, 2023 S170219
Chemical and Physical Properties
Molecular Weight200.690 g/mol
XLogP3
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count5
Rotatable Bond Count5
Exact Mass200.039 Da
Monoisotopic Mass200.039 Da
Topological Polar Surface Area115.000 Ų
Heavy Atom Count11
Formal Charge0
Complexity110.000
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 Count2
Solution Calculators
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