N-Ethynyl-N,4-dimethylbenzenesulfonamide

Name: N-Ethynyl-N,4-dimethylbenzenesulfonamide
Brand: ChemScene
Availability: InStock
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CAS No. 1005500-75-3
Cat. No. CS-0131107
Purity≥96%
MDL No.None

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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N-Ethynyl-N,4-dimethylbenzenesulfonamide|CS-0131107

Structure of 1005500-75-3

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General Information

CAS No. 1005500-75-3
Cat. No. CS-0131107
Purity ≥96%
MDL No. None
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₀H₁₁NO₂S
Molecular Weight 209.26
Synonym(s) N-Methylynetoluenesulfonamide
SMILES C#CN(C)S(C1=CC=C(C=C1)C)(=O)=O

Description

N-Ethynyl-N,4-dimethylbenzenesulfonamide features a terminal alkyne group appended to a sulfonamide scaffold bearing para-methyl substituents. This configuration enables efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC) for bioconjugation and click chemistry applications. The electron-rich aryl moiety enhances solubility in organic solvents, while the bench-stable alkyne facilitates handling under standard conditions.

Application

N-Ethynyl-N,4-dimethylbenzenesulfonamide serves as a versatile building block in synthetic organic chemistry, enabling efficient access to functionalized alkynes via coupling reactions. The sulfonamide group enhances stability and solubility, while the terminal alkyne facilitates palladium- and copper-catalyzed transformations such as Sonogashira and click chemistry. Its bench-stable nature and compatibility with diverse reaction conditions make it well-suited for constructing complex molecular architectures in medicinal chemistry and materials science applications.

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P330-P362+P364-P405-P501

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Computational Chemistry Data

TPSA 37.38
LogP 1.20622
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 2

Other Classifications

Building Blocks Functional Group Sulfonamide

Building Blocks Skeleton Aromatic ring compounds Benzene compounds

Chemical Biology Pharmaceutical Development and Drug Discovery Research Reagents Peptide Chemistry Peptide Coupling Agents

Chemical Biology Pharmaceutical Development and Drug Discovery Research Peptide Chemistry Peptide Coupling Agents

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N-Ethynyl-N,4-dimethylbenzenesulfonamide

CAS No. 1005500-75-3

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