N-Isobutyryl-L-cysteine - ≥97% , CAS No.124529-02-8

CAS: 124529-02-8 Cat. No.: N337613 Molecular Weight: 191.25 EC Number: 691-989-3
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
(2R)-2-(2-methylpropanamido)-3-sulfanylpropanoic acid | N-(2-Methylpropionyl)-L-cysteine | (2R)-2-(2-methylpropanoylamino)-3-sulfanylpropanoic acid | N-Isobutyryl-L-cysteine | (R)-2-Isobutyramido-3-mercaptopropanoic acid | L-Cysteine, N-(2-methyl-1-oxopro
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
N337613-250mg
3
$147.90
1g
N337613-1g
1
$453.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥97% 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

N-Isobutyryl-L-cysteine is a thiol compound, which distinguishes chirality in assays involving amino acids with OPA. N-Isobutyryl-L-cysteine is employed along with gold particles on a monolayer surface to separate single stranded DNA, via the interaction between the dipole moment of N-Isobutyryl-L-cysteine and the negative charge of single stranded DNA. These studies determined that N-Isobutyryl-L-cysteine is an essential tool along with gold nanoparticles in vibrational circular dichroism (VCD) and circular dichroism (CD) spectroscopy. Furthermore, the L isomer is more effective in adsorption of relaxed DNA compared to the D form which causes DNA to supercoil and results in a weaker binding strength.

Specifications

Synonyms
(2R)-2-(2-methylpropanamido)-3-sulfanylpropanoic acid | N-(2-Methylpropionyl)-L-cysteine | (2R)-2-(2-methylpropanoylamino)-3-sulfanylpropanoic acid | N-Isobutyryl-L-cysteine | (R)-2-Isobutyramido-3-mercaptopropanoic acid | L-Cysteine, N-(2-methyl-1-oxopro
Specifications & Purity
≥97%
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
≥97%
Names and Identifiers
Pubchem Sid488187806
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488187806
Canonical SmilesCC(C)C(=O)NC(CS)C(=O)O
IUPAC Name(2R)-2-(2-methylpropanoylamino)-3-sulfanylpropanoic acid
InChIKeyBWBQXMAXLAHHTK-YFKPBYRVSA-N
INCHI1S/C7H13NO3S/c1-4(2)6(9)8-5(3-12)7(10)11/h4-5,12H,3H2,1-2H3,(H,8,9)(H,10,11)/t5-/m0/s1
Isomeric SMILES CC(C)C(=O)N[C@@H](CS)C(=O)O
Molecular Weight 191.25
Reaxy-Rn 25475057
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=25475057&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 - N-acyl-alpha amino acids and derivatives - N-acyl-alpha amino acids
Direct ParentN-acyl-L-alpha-amino acids
Alternative Parents Cysteine and derivatives  Secondary carboxylic acid amides  Monocarboxylic acids and derivatives  Carboxylic acids  Alkylthiols  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents N-acyl-l-alpha-amino acid - Cysteine or derivatives - Carboxamide group - Secondary carboxylic acid amide - Alkylthiol - Carboxylic acid - Monocarboxylic acid or derivatives - Organic oxygen compound - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Carbonyl group - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organic oxide - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as n-acyl-l-alpha-amino acids. These are n-acylated alpha amino acids which have the L-configuration of the alpha-carbon atom.
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.

12 results found

Lot NumberCertificate TypeDateItem
E2305616Certificate of AnalysisFeb 05, 2026 N337613
E2305638Certificate of AnalysisFeb 05, 2026 N337613
A2614592Certificate of AnalysisDec 31, 2025 N337613
A2614604Certificate of AnalysisDec 31, 2025 N337613
A2305137Certificate of AnalysisOct 14, 2025 N337613
L2213484Certificate of AnalysisSep 16, 2025 N337613
F2513120Certificate of AnalysisJun 17, 2024 N337613
H2408386Certificate of AnalysisJun 17, 2024 N337613
H2408387Certificate of AnalysisJun 17, 2024 N337613
E2305637Certificate of AnalysisApr 15, 2023 N337613
E2305671Certificate of AnalysisApr 15, 2023 N337613
L2213405Certificate of AnalysisSep 23, 2022 N337613

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Chemical and Physical Properties
SensitivityMoisture sensitive;Air sensitive
Melt Point(°C)97-101° C
Molecular Weight191.250 g/mol
XLogP30.500
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count4
Rotatable Bond Count4
Exact Mass191.062 Da
Monoisotopic Mass191.062 Da
Topological Polar Surface Area67.400 Ų
Heavy Atom Count12
Formal Charge0
Complexity181.000
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
Solution Calculators
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