Alkyne NHS ester (hexynoic acid NHS ester) - ≥95% , CAS No.906564-59-8

CAS: 906564-59-8 Cat. No.: A171448 Molecular Weight: 209.2
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25mg
A171448-25mg
1
$179.90
50mg
A171448-50mg
3
$277.90
100mg
A171448-100mg
4
$494.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at -20°C Ships Ice chest + Ice pads 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.

📚

Literature proof

Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Specifications & Purity
≥95%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Pubchem Sid504771773
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504771773
Canonical SmilesC#CCCCC(=O)ON1C(=O)CCC1=O
IUPAC Name(2,5-dioxopyrrolidin-1-yl) hex-5-ynoate
InChIKeyCXSSWEBEHUYETJ-UHFFFAOYSA-N
INCHI1S/C10H11NO4/c1-2-3-4-5-10(14)15-11-8(12)6-7-9(11)13/h1H,3-7H2
Isomeric SMILES C#CCCCC(=O)ON1C(=O)CCC1=O
Molecular Weight 209.2
Reaxy-Rn 10347800
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=10347800&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
SuperclassOrganoheterocyclic compounds
ClassPyrrolidines
SubclassPyrrolidones
Intermediate Tree Nodes Not available
Direct ParentPyrrolidine-2-ones
Alternative Parents Dicarboximides  Lactams  Monocarboxylic acids and derivatives  Azacyclic compounds  Acetylides  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents 2-pyrrolidone - Dicarboximide - Lactam - Acetylide - Azacycle - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Organic nitrogen compound - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Carbonyl group - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyrrolidine-2-ones. These are pyrrolidines which bear a C=O group at position 2 of the pyrrolidine ring.
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.

4 results found

Lot NumberCertificate TypeDateItem
H2218036Certificate of AnalysisJun 09, 2025 A171448
H2218037Certificate of AnalysisJun 09, 2025 A171448
J1817047Certificate of AnalysisMay 10, 2024 A171448
J1817046Certificate of AnalysisMay 10, 2024 A171448
Chemical and Physical Properties
Solubilitygood in organic solvents (DMF, DMSO, DCM)
Molecular Weight209.200 g/mol
XLogP30.100
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count5
Exact Mass209.069 Da
Monoisotopic Mass209.069 Da
Topological Polar Surface Area63.700 Ų
Heavy Atom Count15
Formal Charge0
Complexity323.000
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
Citations of This Product
References
1. He Ji-Xiang, Fei Zheng-Cong, Fu Ling, Tian Cai-Ping, He Fu-Chu, Chi Hao, Yang Jing.  (2022)  A modification-centric assessment tool for the performance of chemoproteomic probes.  Nature Chemical Biology,  18  (8): (904-912).  [PMID:35864333] [10.1038/s41589-022-01074-8]
2. Ma Ke, Chen Sixian, Zhang Jun, Jia Xinglong, Fan Rufeng, Li Mingjun, Dong Li, Tan Minjia, Zhao Wensi, Xie Dong.  (2025)  Characterization of endogenous SUMOylation sites by click chemistry-based proteomics.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,      [PMID:40522366] [10.1007/s00216-025-05957-2]
Solution Calculators
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