L-Cysteine ethyl ester hydrochloride - ≥98% , CAS No.868-59-7

CAS: 868-59-7 Cat. No.: C100827 Molecular Weight: 185.67 Beilstein Registry Number: 3562600 EC Number: 212-779-6
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
DTXCID2026527 | ETHYL L-CYSTEINE HYDROCHLORIDE [JAN] | L-Cysteine, ethyl ester, hydrochloride (1:1) | L-CYSTEINE ETHYL ESTER HCl | L-Cysteine ethyl ester, HCl | Cysteine, ethyl ester, hydrochloride | Ethyl L-cysteine hydrochloride (JP17) | Daiace (TN) | H
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
C100827-5g
1

$9.90

$14.90
Save $5.00 (33.56%)
25g
C100827-25g
2

$13.90

$20.90
Save $7.00 (33.49%)
100g
C100827-100g
3

$54.90

$82.90
Save $28.00 (33.78%)
500g
C100827-500g
1

$147.90

$221.90
Save $74.00 (33.35%)
Enter a quantity for the sizes you want to add.
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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,Argon charged Ships Wet ice 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
DTXCID2026527 | ETHYL L-CYSTEINE HYDROCHLORIDE [JAN] | L-Cysteine, ethyl ester, hydrochloride (1:1) | L-CYSTEINE ETHYL ESTER HCl | L-Cysteine ethyl ester, HCl | Cysteine, ethyl ester, hydrochloride | Ethyl L-cysteine hydrochloride (JP17) | Daiace (TN) | H
Specifications & Purity
≥98%
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Pubchem Sid488192164
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488192164
Canonical SmilesCCOC(=O)C(CS)N.Cl
IUPAC Nameethyl (2R)-2-amino-3-sulfanylpropanoate;hydrochloride
InChIKeyJFKJWWJOCJHMGV-WCCKRBBISA-N
INCHI1S/C5H11NO2S.ClH/c1-2-8-5(7)4(6)3-9;/h4,9H,2-3,6H2,1H3;1H/t4-;/m0./s1
Isomeric SMILES CCOC(=O)[C@H](CS)N.Cl
WGK Germany 2
RTECS HA1820000
Molecular Weight 185.67
Beilstein 3562600
Reaxy-Rn 4327606
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4327606&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
Direct ParentAlpha amino acid esters
Alternative Parents Cysteine and derivatives  Carboxylic acid esters  Monocarboxylic acids and derivatives  Alkylthiols  Organopnictogen compounds  Organic zwitterions  Organic oxides  Organic chloride salts  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Alpha-amino acid ester - Cysteine or derivatives - Carboxylic acid ester - Alkylthiol - Monocarboxylic acid or derivatives - Organic nitrogen compound - Hydrocarbon derivative - Organic chloride salt - Organic salt - Organic zwitterion - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic oxide - Primary aliphatic amine - Organopnictogen compound - Carbonyl group - Amine - Organic oxygen compound - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as alpha amino acid esters. These are ester derivatives of alpha amino acids.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





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.

11 results found

Lot NumberCertificate TypeDateItem
K2125933Certificate of AnalysisSep 08, 2025 C100827
K2125934Certificate of AnalysisSep 08, 2025 C100827
A2608005Certificate of AnalysisOct 29, 2022 C100827
B2327516Certificate of AnalysisOct 29, 2022 C100827
B2327533Certificate of AnalysisOct 29, 2022 C100827
B2327551Certificate of AnalysisOct 29, 2022 C100827
B2327552Certificate of AnalysisOct 29, 2022 C100827
B2327556Certificate of AnalysisOct 29, 2022 C100827
B2327560Certificate of AnalysisOct 29, 2022 C100827
E1831037Certificate of AnalysisApr 12, 2022 C100827
E2319214Certificate of AnalysisOct 11, 2021 C100827

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Chemical and Physical Properties
SensitivityMoisture sensitive. &heat sensitive
Specific Rotation[α]-11.5 ° (C=8, 1mol/L HCl)
Melt Point(°C)123-125°C
Molecular Weight185.670 g/mol
XLogP3
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count4
Rotatable Bond Count4
Exact Mass185.028 Da
Monoisotopic Mass185.028 Da
Topological Polar Surface Area53.300 Ų
Heavy Atom Count10
Formal Charge0
Complexity97.000
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
Citations of This Product
References
1. Zhe Yu, Ying Zhang, Zi Jian Gao, Xiu Yan Ren, Guang Hui Gao.  (2016)  Enhancing mechanical strength of hydrogels via IPN structure.  JOURNAL OF APPLIED POLYMER SCIENCE,  134  (8):   [PMID:] [10.1002/app.44503]
2. Ruan Qiaohui, Cui Yanyu, Lin Zhuohan, Zhang Xue, Zhang Xin, Li Yan, Ma Xiang.  (2024)  Chiral magic-size clusters via direct aqueous synthesis with chiral ligands.  Science China-Materials,  67  (7): (2302-2310).  [PMID:] [10.1007/s40843-024-2928-y]
Solution Calculators
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