L-Homocystine - ≥98% , CAS No.626-72-2

CAS: 626-72-2 Cat. No.: H115883 Molecular Weight: 268.35 Beilstein Registry Number: 1728583 EC Number: 210-962-5
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
EN300-36962 | UNII-804AS222UE | (S)-2-amino-4-((S)-3-amino-3-carboxy-propyldisulfanyl)-butyric acid | (4-Chlorophenyl)(piperidin-4-yl)methanone--hydrogen chloride (1/1) | A825921 | AKOS015924140 | L-4,4'-dithio-bis(2-aminobutanoic acid) | 451C7394-EBB7-4F
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
H115883-1g
3
$22.90
5g
H115883-5g
7
$77.90
25g
H115883-25g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$126.90
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Why this grade

≥98% 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
EN300-36962 | UNII-804AS222UE | (S)-2-amino-4-((S)-3-amino-3-carboxy-propyldisulfanyl)-butyric acid | (4-Chlorophenyl)(piperidin-4-yl)methanone--hydrogen chloride (1/1) | A825921 | AKOS015924140 | L-4, 4'-dithio-bis(2-aminobutanoic acid) | 451C7394-EBB7-4F
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
L-Homocystine is the oxidized member of the L-homocysteine:L-homocystine pair. Homocysteine/homocystine is derived from methionine. Homocysteine is a pro-thrombotic factor, vasodilation impairing agent, pro-inflammatory factor and endoplasmatic reticulum-
Storage
Room temperature
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Pubchem Sid504758712
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504758712
Canonical SmilesC(CSSCCC(C(=O)O)N)C(C(=O)O)N
IUPAC Name(2S)-2-amino-4-[[(3S)-3-amino-3-carboxypropyl]disulfanyl]butanoic acid
InChIKeyZTVZLYBCZNMWCF-WDSKDSINSA-N
INCHI1S/C8H16N2O4S2/c9-5(7(11)12)1-3-15-16-4-2-6(10)8(13)14/h5-6H,1-4,9-10H2,(H,11,12)(H,13,14)/t5-,6-/m0/s1
Isomeric SMILES C(CSSCC[C@@H](C(=O)O)N)[C@@H](C(=O)O)N
WGK Germany 3
Molecular Weight 268.35
Beilstein 1728583
Reaxy-Rn 1728581
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1728581&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.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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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  Dicarboxylic acids and derivatives  Dialkyldisulfides  Amino acids  Sulfenyl compounds  Carboxylic acids  Organopnictogen compounds  Organic oxides  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents L-alpha-amino acid - Thia fatty acid - Dicarboxylic acid or derivatives - Fatty acyl - Fatty acid - Amino acid - Organic disulfide - Dialkyldisulfide - Carboxylic acid - Sulfenyl compound - Organic oxygen compound - Organic nitrogen compound - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Hydrocarbon derivative - Primary aliphatic amine - Organic oxide - Organopnictogen compound - Carbonyl group - Amine - 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 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.

6 results found

Lot NumberCertificate TypeDateItem
K2102135Certificate of AnalysisAug 11, 2025 H115883
K2102136Certificate of AnalysisAug 11, 2025 H115883
K2102166Certificate of AnalysisAug 11, 2025 H115883
I2025256Certificate of AnalysisJul 04, 2024 H115883
I2025257Certificate of AnalysisJul 04, 2024 H115883
G2320130Certificate of AnalysisNov 08, 2021 H115883
Chemical and Physical Properties
Melt Point(°C)281-284°C
Molecular Weight268.400 g/mol
XLogP3-5.600
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count8
Rotatable Bond Count9
Exact Mass268.055 Da
Monoisotopic Mass268.055 Da
Topological Polar Surface Area177.000 Ų
Heavy Atom Count16
Formal Charge0
Complexity216.000
Isotope Atom Count0
Defined Atom Stereocenter Count2
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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