MES - ≥99.5%(T) , CAS No.4432-31-9

CAS: 4432-31-9 Cat. No.: M163013 Formula: C6H13NO4S Molecular Weight: 195.24 Beilstein Registry Number: 141319 EC Number: 224-632-3
AVAILABLE TO ORDER
GRADE & PURITY ≥99.5%(T)
Synonyms
Morpholineethanesulfonic acid | Phenol, o-phenoxy- | SCHEMBL6200 | W-106203 | MES, low moisture content, >=99% (titration) | 2-Propenoic acid, 2-methyl-, 2-aminoethyl ester, hydrochloride | 3,3,4,4-Biphenyltetracarboxylic Dianhydride | Q209294 | 2-(n-morp
Storage
Room temperature
Shipped In
Normal
★
Size
USA
Germany (EU)*
Price
Qty
5g
M163013-5g
9 In stock
—
$9.90
25g
M163013-25g
In stock ≥10
—
$21.90
100g
M163013-100g
In stock ≥10
8 In stock
$59.90
500g
M163013-500g
2 In stock
4 In stock
$199.90
Enter a quantity for the sizes you want to add.
🧪
Why this grade

≥99.5%(T) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal 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 799 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

useful pH range 5.5 - 6.7 pKa 6.1


product description:

MES is one of the Good′s buffers, the most extensively used biological buffers. MES is a zwitterionic N-substituted aminosulfonic acid with a morpholinic ring. It does not form complexes with majority of the metals used in environmental and biological studies. It is easily soluble in water and has minimum lipid solubility, making it impermeable to membranes.


application:

MES has been used as a component of the elution buffer used to elute plasma from α2-macroglobulin affinity column. It has been used as an activation buffer during antibody conjugation to microparticles. MES has been used in the functionalization of microchannels during the creation of microfluidic-integrated surface plasmon resonance (SPR) platform for pathogen detection.

Specifications

Synonyms
Morpholineethanesulfonic acid | Phenol, o-phenoxy- | SCHEMBL6200 | W-106203 | MES, low moisture content, >=99% (titration) | 2-Propenoic acid, 2-methyl-, 2-aminoethyl ester, hydrochloride | 3,3,4,4-Biphenyltetracarboxylic Dianhydride | Q209294 | 2-(n-morp
Specifications & Purity
≥99.5%(T)
Storage
Room temperature
Shipped In
Normal
Purity
≥99.5%(T)
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/508812896
Canonical Smiles
C1COCCN1CCS(=O)(=O)O
IUPAC Name
2-morpholin-4-ylethanesulfonic acid
InChIKey
SXGZJKUKBWWHRA-UHFFFAOYSA-N
INCHI
1S/C6H13NO4S/c8-12(9,10)6-3-7-1-4-11-5-2-7/h1-6H2,(H,8,9,10)
Isomeric SMILES
C1COCCN1CCS(=O)(=O)O
WGK Germany
1
RTECS
QE3479500
Molecular Weight
195.24
Beilstein
141319
Reaxy-Rn
141319
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=141319&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ 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
SuperclassOrganoheterocyclic compounds
ClassOxazinanes
SubclassMorpholines
Intermediate Tree Nodes Not available
Direct ParentMorpholines
Alternative Parents Sulfonyls  Organosulfonic acids  Alkanesulfonic acids  Trialkylamines  Oxacyclic compounds  Dialkyl ethers  Azacyclic compounds  Organopnictogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Morpholine - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Alkanesulfonic acid - Tertiary amine - Tertiary aliphatic amine - Dialkyl ether - Ether - Oxacycle - Azacycle - Organopnictogen compound - Organic oxygen compound - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic nitrogen compound - Organic oxide - Hydrocarbon derivative - Amine - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as morpholines. These are organic compounds containing a morpholine moiety, which consists of a six-member aliphatic saturated ring with the formula C4H9NO, where the oxygen and nitrogen atoms lie at positions 1 and 4, respectively.
External Descriptors organosulfonic acid - MES
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
POLH Tchem DNA polymerase eta (21678 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CBX1 Tbio Chromobox protein homolog 1 (92434 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
ampC Beta-lactamase AmpC (62480 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Plasmodium falciparum (966862 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.

71 results found

Lot NumberCertificate TypeDateItem
I2628402I2628402Certificate of AnalysisSep 16, 2026 M163013
I2628405I2628405Certificate of AnalysisSep 16, 2026 M163013
I2628383I2628383Certificate of AnalysisSep 16, 2026 M163013
I2628363I2628363Certificate of AnalysisSep 16, 2026 M163013
F2611534F2611534Certificate of AnalysisJun 01, 2026 M163013
F2611670F2611670Certificate of AnalysisJun 01, 2026 M163013
F2611533F2611533Certificate of AnalysisJun 01, 2026 M163013
F2611531F2611531Certificate of AnalysisJun 01, 2026 M163013
E2615141E2615141Certificate of AnalysisJan 12, 2026 M163013
B2627784B2627784Certificate of AnalysisJan 12, 2026 M163013
B2627783B2627783Certificate of AnalysisJan 12, 2026 M163013
B2627790B2627790Certificate of AnalysisJan 12, 2026 M163013
B2627792B2627792Certificate of AnalysisJan 12, 2026 M163013
A2621512A2621512Certificate of AnalysisJan 12, 2026 M163013
A2621494A2621494Certificate of AnalysisJan 12, 2026 M163013
A2621493A2621493Certificate of AnalysisJan 12, 2026 M163013
A2621490A2621490Certificate of AnalysisJan 12, 2026 M163013
A2607078A2607078Certificate of AnalysisJan 10, 2026 M163013
G2518572G2518572Certificate of AnalysisJul 10, 2025 M163013
G2518571G2518571Certificate of AnalysisJul 10, 2025 M163013
G2518570G2518570Certificate of AnalysisJul 10, 2025 M163013
G2518569G2518569Certificate of AnalysisJul 10, 2025 M163013
F2511443F2511443Certificate of AnalysisApr 18, 2025 M163013
F2516536F2516536Certificate of AnalysisApr 18, 2025 M163013
F2511442F2511442Certificate of AnalysisApr 18, 2025 M163013
F2511441F2511441Certificate of AnalysisApr 18, 2025 M163013
F2511362F2511362Certificate of AnalysisApr 18, 2025 M163013
F2516537F2516537Certificate of AnalysisApr 18, 2025 M163013
D2515379D2515379Certificate of AnalysisApr 17, 2025 M163013
D2515383D2515383Certificate of AnalysisApr 17, 2025 M163013
D2515421D2515421Certificate of AnalysisApr 17, 2025 M163013
A2513424A2513424Certificate of AnalysisDec 23, 2024 M163013
A2513423A2513423Certificate of AnalysisDec 23, 2024 M163013
A2513422A2513422Certificate of AnalysisDec 23, 2024 M163013
A2513421A2513421Certificate of AnalysisDec 23, 2024 M163013
A2503923A2503923Certificate of AnalysisDec 23, 2024 M163013
A2503921A2503921Certificate of AnalysisDec 23, 2024 M163013
J2415735J2415735Certificate of AnalysisOct 09, 2024 M163013
J2415757J2415757Certificate of AnalysisOct 09, 2024 M163013
J2415758J2415758Certificate of AnalysisOct 09, 2024 M163013
J2415759J2415759Certificate of AnalysisOct 09, 2024 M163013
I2406300I2406300Certificate of AnalysisAug 26, 2024 M163013
I2406283I2406283Certificate of AnalysisAug 26, 2024 M163013
C2506200C2506200Certificate of AnalysisAug 26, 2024 M163013
E2421467E2421467Certificate of AnalysisMay 11, 2024 M163013
E2421427E2421427Certificate of AnalysisMay 11, 2024 M163013
E2421260E2421260Certificate of AnalysisMay 11, 2024 M163013
B2422260B2422260Certificate of AnalysisJan 26, 2024 M163013
B2422259B2422259Certificate of AnalysisJan 26, 2024 M163013
B2422258B2422258Certificate of AnalysisJan 26, 2024 M163013
B2422257B2422257Certificate of AnalysisJan 26, 2024 M163013
J2311068J2311068Certificate of AnalysisOct 13, 2023 M163013
K2302054K2302054Certificate of AnalysisOct 13, 2023 M163013
K2209727K2209727Certificate of AnalysisOct 28, 2022 M163013
K2209726K2209726Certificate of AnalysisOct 28, 2022 M163013
K2209725K2209725Certificate of AnalysisOct 28, 2022 M163013
K2209724K2209724Certificate of AnalysisOct 28, 2022 M163013
D23031099D23031099Certificate of AnalysisOct 28, 2022 M163013
D23031098D23031098Certificate of AnalysisOct 28, 2022 M163013
B2311221B2311221Certificate of AnalysisOct 28, 2022 M163013
B2310742B2310742Certificate of AnalysisOct 28, 2022 M163013
B2310713B2310713Certificate of AnalysisOct 28, 2022 M163013
B2310702B2310702Certificate of AnalysisOct 28, 2022 M163013
I2212112I2212112Certificate of AnalysisAug 24, 2022 M163013
I2212107I2212107Certificate of AnalysisAug 24, 2022 M163013
I2212108I2212108Certificate of AnalysisAug 24, 2022 M163013
I2212111I2212111Certificate of AnalysisAug 24, 2022 M163013
E2227100E2227100Certificate of AnalysisJun 01, 2022 M163013
A2219013A2219013Certificate of AnalysisDec 30, 2021 M163013
A2219012A2219012Certificate of AnalysisDec 30, 2021 M163013
A2218543A2218543Certificate of AnalysisDec 30, 2021 M163013
Chemical and Physical Properties
Melt Point(°C)316°C
Molecular Weight195.240 g/mol
XLogP3-3.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count5
Rotatable Bond Count3
Exact Mass195.057 Da
Monoisotopic Mass195.057 Da
Topological Polar Surface Area75.200 Ų
Heavy Atom Count12
Formal Charge0
Complexity214.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
General Protocol for Western Blotting
Western Blotting with Fluorescently Labeled Antibodies
Good’s buffers
How to Choose the Best Protein Purification Technique
What is Ion Exchange Chromatography Used For? 4 Important Applications for Protein Purification
Scientific Decision-Making for Chromatography Buffer Selection: Tris-HCl vs Phosphate Systems
How Organic Acids “Stabilize a System”: Selection Logic via the pH Window, Salt Forms, and Metal-Ion Management (with a navigation guide to Tables A–E)
Phytase: Enzymological Properties, Mechanism of Action, and Applications in Feed and Food
Why Do So Many Molecules Incorporate an “Oxadiazole Ring”? A Stability-Oriented Design Guide from Structural Effects to Application Storylines (with Product Navigation Tables 1–3)
Functional Properties, Application Scenarios, and Manufacturing Processes of Maltotetraose (G4): A Review
Research Value of Polyelectrolyte Multilayers: Layer-by-Layer Design of Interfacial Composition, Mass Transport, and Function
Structural Characteristics, Operational Methods, and Separation Applications of Dextran Gels
Protein Structure Analysis: An Experimental Path from Defining the Question to Functional Validation
From Functional Groups to Experimental Decision-Making: Protein Crosslinker Selection and Experimental Essentials
Signal Transduction Mechanism of Graphene Biosensors: From Molecular Recognition to Electrical/Optical Signal Readout and Materials Selection
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.