N-Ethynyl-N-methylmethanesulfonamide

Name: N-Ethynyl-N-methylmethanesulfonamide
Brand: ChemScene
Availability: InStock
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CAS No. 1675790-91-6
Cat. No. CS-0499202
Purity≥97%
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-methylmethanesulfonamide|CS-0499202

Structure of 1675790-91-6

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Description

N-Ethynyl-N-methylmethanesulfonamide features a reactive terminal alkyne paired with a stable sulfonamide group, enabling efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC) for bioconjugation and click chemistry applications. This bench-stable reagent integrates readily into diverse molecular architectures under mild conditions.

Application

N-Ethynyl-N-methylmethanesulfonamide serves as a versatile building block in synthetic organic chemistry, enabling efficient access to diverse heterocyclic scaffolds via copper-catalyzed azide-alkyne cycloaddition (CuAAC). Its terminal alkyne functionality exhibits excellent stability under standard bench conditions and tolerates a broad range of functional groups, facilitating straightforward purification and integration into complex molecular architectures. The sulfonamide moiety enhances solubility and provides a handle for further derivatization, making this reagent particularly valuable in medicinal chemistry and combinatorial library synthesis.

General Information

CAS No. 1675790-91-6
Cat. No. CS-0499202
Purity ≥97%
MDL No. None
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₇NO₂S
Molecular Weight 133.17
Synonym(s) None
SMILES CS(=O)(N(C#C)C)=O

Computational Chemistry Data

TPSA 37.38
LogP -0.5315
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 1

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H315-H319
Precautionary Statements : P264-P280-P302+P352-P362+P364

Quality Control

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Other Classifications

Building Blocks Functional Group Alkyne

Building Blocks Skeleton Fatty chain compounds

Life Science Click Chemistry Reagents Alkyne

Chemical Biology Pharmaceutical Development and Drug Discovery Research Conjugation Chemistry/Click Chemistry Terminal Alkynes

Chemical Biology Conjugation Chemistry/Click Chemistry Terminal Alkynes

Key Words

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N-Ethynyl-N-methylmethanesulfonamide

CAS No. 1675790-91-6

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