BES - ≥99%(T) , CAS No.10191-18-1

CAS: 10191-18-1 Cat. No.: B105115 Molecular Weight: 213.25 Beilstein Registry Number: 1781572 EC Number: 233-465-5
AVAILABLE TO ORDER
GRADE & PURITY ≥99%(T)
Synonyms
N,N-di[(2-hydroxy)ethyl]taurine | 2-(Bis(2-hydroxyethyl)amino)ethanesulfonic acid | N,N-bis-(2-Hydroxyethyl)-2-aminoethanesulfonic acid | N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid | MFCD00007533 | Taurine, N,N-bis(2-hydroxyethyl)- | BES (bufferin
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
B105115-5g
10
$9.90
25g
B105115-25g
8
$13.90
100g
B105115-100g
≥10
$41.90
500g
B105115-500g
2
$193.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥99%(T) 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 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Product Describtion:

BES, Free Acid is a zwitterionic buffer that is used in biochemistry and molecular biology research in the pH range of 6.15 - 8.35 for wide applicability to biochemical studies. A protocol has been reported for the use of BES buffered saline in the calcium phosphate mediated transfection of eukaryotic cells with plasmid DNA. A zwitterionic buffer that is used in research in the pH range of 6.15 - 8.35;BES may be employed as binding buffer in modified Eagle′s medium during the binding assay of human melanoma cells. It may be used as biobuffer to investigate the aqueous medium self-assembly of heterometallic CuII/Li 3D coordination polymers.

useful pH range 6.4 - 7.8 pKa (25 °C) 7.1


Product Application:

A zwitterionic buffer that is used in research in the pH range of 6.15 - 8.35;BES may be employed as binding buffer in modified Eagle′s medium during the binding assay of human melanoma cells. It may be used as biobuffer to investigate the aqueous medium self-assembly of heterometallic CuII/Li 3D coordination polymers.

Specifications

Synonyms
N, N-di[(2-hydroxy)ethyl]taurine | 2-(Bis(2-hydroxyethyl)amino)ethanesulfonic acid | N, N-bis-(2-Hydroxyethyl)-2-aminoethanesulfonic acid | N, N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid | MFCD00007533 | Taurine, N, N-bis(2-hydroxyethyl)- | BES (bufferin
Specifications & Purity
≥99%(T)
Storage
Room temperature
Shipped In
Normal
Purity
≥99%(T)
Names and Identifiers
Pubchem Sid488184769
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488184769
Canonical SmilesC(CO)N(CCO)CCS(=O)(=O)O
IUPAC Name2-[bis(2-hydroxyethyl)amino]ethanesulfonic acid
InChIKeyAJTVSSFTXWNIRG-UHFFFAOYSA-N
INCHI1S/C6H15NO5S/c8-4-1-7(2-5-9)3-6-13(10,11)12/h8-9H,1-6H2,(H,10,11,12)
Isomeric SMILES C(CO)N(CCO)CCS(=O)(=O)O
WGK Germany 3
RTECS KI7363500
Molecular Weight 213.25
Beilstein 1781572
Reaxy-Rn 1781572
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1781572&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
ClassOrganic sulfonic acids and derivatives
SubclassOrganosulfonic acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentOrganosulfonic acids
Alternative Parents Sulfonyls  Alkanesulfonic acids  Trialkylamines  1,2-aminoalcohols  Primary alcohols  Organopnictogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Organosulfonic acid - Sulfonyl - Alkanesulfonic acid - Tertiary aliphatic amine - Tertiary amine - 1,2-aminoalcohol - Alkanolamine - Organic oxide - Hydrocarbon derivative - Alcohol - Primary alcohol - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Amine - Organopnictogen compound - Organic oxygen compound - Organic nitrogen compound - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as organosulfonic acids. These are compounds containing the sulfonic acid group, which has the general structure RS(=O)2OH (R is not a hydrogen atom).
External Descriptors 1,1-diunsubstituted alkanesulfonate - BES
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.

61 results found

Lot NumberCertificate TypeDateItem
G2213532Certificate of AnalysisApr 07, 2026 B105115
D2615250Certificate of AnalysisMar 26, 2026 B105115
D2615249Certificate of AnalysisMar 26, 2026 B105115
D2615248Certificate of AnalysisMar 26, 2026 B105115
D2615245Certificate of AnalysisMar 26, 2026 B105115
D2615233Certificate of AnalysisMar 26, 2026 B105115
A2613298Certificate of AnalysisJan 15, 2026 B105115
A2613299Certificate of AnalysisJan 15, 2026 B105115
A2613300Certificate of AnalysisJan 15, 2026 B105115
A2613301Certificate of AnalysisJan 15, 2026 B105115
A2613297Certificate of AnalysisJan 15, 2026 B105115
K2524256Certificate of AnalysisDec 05, 2025 B105115
K2524255Certificate of AnalysisDec 05, 2025 B105115
G2524004Certificate of AnalysisJul 25, 2025 B105115
G2524005Certificate of AnalysisJul 25, 2025 B105115
K2422288Certificate of AnalysisNov 30, 2024 B105115
K2422287Certificate of AnalysisNov 30, 2024 B105115
I2423085Certificate of AnalysisSep 25, 2024 B105115
I2423083Certificate of AnalysisSep 25, 2024 B105115
I2423084Certificate of AnalysisSep 25, 2024 B105115
I2423086Certificate of AnalysisSep 25, 2024 B105115
F2503105Certificate of AnalysisJul 19, 2024 B105115
F2503104Certificate of AnalysisJul 19, 2024 B105115
F2503103Certificate of AnalysisJul 19, 2024 B105115
F2503102Certificate of AnalysisJul 19, 2024 B105115
E2420527Certificate of AnalysisMay 22, 2024 B105115
E2420538Certificate of AnalysisMay 22, 2024 B105115
E2420529Certificate of AnalysisMay 22, 2024 B105115
E2420528Certificate of AnalysisMay 22, 2024 B105115
E2420539Certificate of AnalysisMay 21, 2024 B105115
B2518136Certificate of AnalysisMay 07, 2024 B105115
B2518130Certificate of AnalysisMay 07, 2024 B105115
B2518129Certificate of AnalysisMay 07, 2024 B105115
B2518127Certificate of AnalysisApr 28, 2024 B105115
B2518128Certificate of AnalysisApr 28, 2024 B105115
F23251219Certificate of AnalysisJun 28, 2023 B105115
F23251211Certificate of AnalysisJun 28, 2023 B105115
F23251193Certificate of AnalysisJun 28, 2023 B105115
F23251186Certificate of AnalysisJun 27, 2023 B105115
F2308942Certificate of AnalysisJun 10, 2023 B105115
D2304467Certificate of AnalysisApr 07, 2023 B105115
D2304462Certificate of AnalysisApr 07, 2023 B105115
D2304451Certificate of AnalysisApr 07, 2023 B105115
D2304431Certificate of AnalysisApr 07, 2023 B105115
B2302306Certificate of AnalysisFeb 11, 2023 B105115
B2302308Certificate of AnalysisFeb 10, 2023 B105115
B2302307Certificate of AnalysisFeb 07, 2023 B105115
K2218176Certificate of AnalysisNov 23, 2022 B105115
I2217093Certificate of AnalysisSep 27, 2022 B105115
I2217102Certificate of AnalysisSep 27, 2022 B105115
I2220002Certificate of AnalysisSep 27, 2022 B105115
G2213534Certificate of AnalysisJul 16, 2022 B105115
G2213512Certificate of AnalysisJul 15, 2022 B105115
G2213422Certificate of AnalysisJul 15, 2022 B105115
G2213421Certificate of AnalysisJul 15, 2022 B105115
G2213394Certificate of AnalysisJul 15, 2022 B105115
C2215213Certificate of AnalysisMar 23, 2022 B105115
C2215212Certificate of AnalysisMar 23, 2022 B105115
C2215211Certificate of AnalysisMar 23, 2022 B105115
C2215210Certificate of AnalysisMar 23, 2022 B105115
C2215209Certificate of AnalysisMar 21, 2022 B105115

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Chemical and Physical Properties
SolubilitySoluble in water.
Melt Point(°C)152-154°C
Molecular Weight213.250 g/mol
XLogP3-4.500
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count6
Rotatable Bond Count7
Exact Mass213.067 Da
Monoisotopic Mass213.067 Da
Topological Polar Surface Area106.000 Ų
Heavy Atom Count13
Formal Charge0
Complexity204.000
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
Citations of This Product
References
1. Zhiwen Lin, Jinan Tan, Zhihan Xiong, Zisen Fu, Jing Chen, Tonghui Xie, Jia Zheng, Yongkui Zhang, Panyu Li.  (2023)  Regulation of the autochthonous microbial community in excess sludge for the bioconversion of carbon dioxide to acetate without exogenic hydrogen.  BIORESOURCE TECHNOLOGY,      [PMID:37011841] [10.1016/j.biortech.2023.129011]
2. Weiye Wang, Kun Wang, Qingliang Zhao, Lin Yang.  (2022)  Maximizing electron flux, microbial diversity and gene abundance in MFC powered electro-Fenton system by optimizing co-addition of lysozyme and 2-bromoethanesulfonate.  JOURNAL OF ENVIRONMENTAL MANAGEMENT,      [PMID:36049306] [10.1016/j.jenvman.2022.116067]
3. Weiye Wang, Kun Wang, Qingliang Zhao, Ye Liu.  (2022)  Simultaneous degradation of anodic sludge and cathodic refractory pollutant in a MFC powered EF system enhanced by co-addition of lysozyme and 2-bromoethane sulfonate.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2022.108074]
4. Min Zhu, Xi Feng, Gaoyang Qiu, Jiayin Feng, Lujun Zhang, Phillip C. Brookes, Jianming Xu, Yan He.  (2019)  Synchronous response in methanogenesis and anaerobic degradation of pentachlorophenol in flooded soil.  JOURNAL OF HAZARDOUS MATERIALS,      [PMID:31005708] [10.1016/j.jhazmat.2019.04.040]
5. Jialian Ding, Bin Su.  (2024)  Dual-Coreactants Enhanced Electrochemiluminescence.  CHEMISTRY-A EUROPEAN JOURNAL,      [PMID:39560166] [10.1002/chem.202403804]
6. Jingwen Guan, Bingyu Tian, Yingying Yao, Mengyao Liu, Jingyu Shan, Ping Wen, Rui Dong, Mingjin Fan.  (2025)  The multi-hydroxyl hydrogen bond network structure of cation-responsive protonic ionic liquid water-based lubrication and their system interaction.  TRIBOLOGY INTERNATIONAL,      [PMID:] [10.1016/j.triboint.2025.111474]
Solution Calculators
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