Skip to Content
Merck
All Photos(4)

Documents

471259

Sigma-Aldrich

Methanesulfonyl chloride

≥99.7%

Synonym(s):

Methyl sulfonyl chloride, Mesyl chloride

Sign Into View Organizational & Contract Pricing
All Photos(4)

About This Item

Linear Formula:
CH3SO2Cl
CAS Number:
124-63-0
Molecular Weight:
114.55
Beilstein:
506297
EC Number:
204-706-1
MDL number:
MFCD00007454
UNSPSC Code:
12352101
PubChem Substance ID:
24870710
NACRES:
NA.22

Quality Level

200

Assay

≥99.7%

refractive index

n20/D 1.452 (lit.)

bp

60 °C/21 mmHg (lit.)

density

1.48 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CS(Cl)(=O)=O

InChI

1S/CH3ClO2S/c1-5(2,3)4/h1H3

InChI key

QARBMVPHQWIHKH-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

Methanesulfonyl chloride can be used for the mesylation of primary alcohols to synthesize the corresponding methanesulfonates. It may also be used for the conversion of amines to the corresponding sulfonamides.

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

Flash Point(F)

215.6 °F - closed cup

Flash Point(C)

102 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Methanesulfonyl Chloride.
Vaillancourt V
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2007)
Base-free monosulfonylation of amines using tosyl or mesyl chloride in water
Kamal A
Tetrahedron Letters, 49(2), 348-353 (2008)
Water-solvent method for tosylation and mesylation of primary alcohols promoted by KOH and catalytic amines.
Morita J I
Green Chemistry, 7(10), 711-715 (2005)
Shengzhuang Tang et al.
The Journal of organic chemistry, 85(5), 2945-2955 (2020-02-06)
Despite its importance in the design of photocaged molecules, less attention is focused on linker chemistry than the cage itself. Here, we describe unique uncaging properties displayed by two coumarin-caged thymidine compounds, each conjugated with (2) or without (1) an
E A Connor et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 3(11), 2164-2171 (1983-11-01)
Excitatory postsynaptic currents (EPSCs), miniature excitatory postsynaptic currents (MEPSCs), and acetylcholine-induced current fluctuations (noise) have been studied in voltage-clamped bullfrog parasympathetic ganglion cells of the atrial septum. EPSCs were also recorded from voltage-clamped sympathetic B cells and, in general, it
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service