Skip to Content
Merck
All Photos(2)

Key Documents

198005

Sigma-Aldrich

2-Chloro-1-methylpyridinium iodide

97%

Synonym(s):

Mukaiyama reagent

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C6H7ClIN
CAS Number:
Molecular Weight:
255.48
Beilstein:
3572320
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

97%

mp

200 °C (dec.) (lit.)

functional group

chloro

SMILES string

[I-].C[n+]1ccccc1Cl

InChI

1S/C6H7ClN.HI/c1-8-5-3-2-4-6(8)7;/h2-5H,1H3;1H/q+1;/p-1

InChI key

ABFPKTQEQNICFT-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

General description

2-Chloro-1-methylpyridinium iodide (Mukaiyama reagent), is a commonly used reagent in organic synthesis for the activation of the hydroxy group of alcohols and carboxylic acids. It is used to synthesize derivatives of esters, lactones, amides, lactams, and ketenes from the corresponding carboxylic acids. It is also used as an efficient coupling reagent in the synthesis of peptides because of its low toxicity, simple reaction conditions, and also less expensive than EDC.

Application

2-Chloro-1-methylpyridinium iodide (CMPI) can be used as:
  • A dehydrating agent for the conversion of various aldoximes to nitriles, and alcohols into alkyl thiocyanates.
  • A cross-linking agent to fabricate biodegradable cross-linked hyaluronic acid film and gelatin membranes for biomedical applications.
  • A condensing agent to synthesize various β-lactams from β-amino acids.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

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

Visit the Document Library

Customers Also Viewed

W Keese et al.
Biological chemistry Hoppe-Seyler, 366(12), 1093-1095 (1985-12-01)
2-Chloro-1-methylpyridinium iodide is a coupling reagent for peptide synthesis. By its use different peptides were synthesized with protected di- and trifunctional amino acids. While urethan-protected amino acids react free of racemization, the fragment condensation needs N-Hydroxysuccinimide, as shown by the
Efficient Transformation of Aldoximes to Nitriles Using 2-Chloro-1-methylpyridinium Iodide Under Mild Conditions
Lee Kieseung, et al.
Synthetic Communications, 34(10), 1775-1782 (2004)
Chul-Hwan Lee et al.
Molecular cell, 70(3), 422-434 (2018-04-24)
PRC2 is a therapeutic target for several types of cancers currently undergoing clinical trials. Its activity is regulated by a positive feedback loop whereby its terminal enzymatic product, H3K27me3, is specifically recognized and bound by an aromatic cage present in
Tetrahedron Asymmetry, 3, 1455-1455 (1992)
A novel cell support membrane for skin tissue engineering: Gelatin film cross-linked with 2-chloro-1-methylpyridinium iodide
Yeh Ming-kung, et al.
Polymer, 52(4), 996-1003 (2011)

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