Pyridine-2-aldoxime methochloride

2-PAM chloride, Pralidoxime chloride
Empirical Formula (Hill Notation):
C7H9N2O · Cl
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

biological source

synthetic (organic)

Quality Level




230 °C (lit.)


water: 50 mg/mL, clear, colorless to faintly yellow

SMILES string




InChI key


Gene Information

human ... ACHE(43)

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5, 25, 100 g in poly bottle

Biochem/physiol Actions

The prototypical reactivator of acetylcholinesterase that has been inactivated by organophosphorus insecticides or nerve agents. It is now known that no reactivator is effective against a broad spectrum of organophosphorus agents.


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Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Certificate of Analysis

Certificate of Origin

Kamil Musilek et al.
Bioorganic & medicinal chemistry, 16(17), 8218-8223 (2008-08-05)
Acetylcholinesterase reactivators are crucial antidotes for the treatment of organophosphate intoxication. Eighteen monoquaternary reactivators of acetylcholinesterase with modified side chain were developed in an effort to extend the properties of pralidoxime. The known reactivators (pralidoxime, HI-6, obidoxime, trimedoxime, methoxime) and...
Hee Chun Jeong et al.
Bioorganic & medicinal chemistry letters, 19(4), 1214-1217 (2009-01-07)
For the purpose of developing new oxime reactivators of acetylcholinesterases (AChE) that have been inhibited by organophosphorus agents, emphasis was given to the finding that the lipophilic nature of fluorinated compounds is responsible for their enhanced transport across the blood...
Jyotiranjan Acharya et al.
European journal of medicinal chemistry, 46(9), 3926-3933 (2011-06-28)
A series of carbamoyl bis-pyridinium monooximes linked with xylene linker were synthesized and their in-vitro reactivation potential was evaluated against acetylcholinesterase (AChE) inhibited by organophosphorus inhibitors (OP) such as sarin, DFP and VX and the data were compared with reactivation...
Chennamaneni Srinivas Rao et al.
Bioorganic & medicinal chemistry letters, 16(8), 2134-2138 (2006-02-17)
In continuation of our investigations of unsymmetrical bisquaternary monooximes, we synthesized four new series of compounds bridged by hexyl, heptyl, octyl and nonyl groups. All eight monooximes viz., dibromides of 1-(4-hydroxyiminomethylpyridinium)6-(3/4-carbamoylpyridinium)hexane, 1-(4-hydroxyiminomethylpyridinium)-7-(3/4-carbamoylpyridinium)heptane, 1-(4-hydroxyiminomethylpyridinium)-8-(3/4-carbamoylpyridinium)octane, 1-(4-hydroxyiminomethylpyridinium)-9-(3/4-carbamoylpyridinium)nonane as well as the corresponding bis-oximes...
Kamil Musilek et al.
Bioorganic & medicinal chemistry letters, 16(21), 5673-5676 (2006-08-29)
Three asymmetrical AChE reactivators with cyano-moiety and propane linker were synthesized using modification of currently known synthetic pathways. Their potency to reactivate AChE inhibited by nerve agent tabun and insecticide paraoxon was tested in vitro and compared to pralidoxime, HI-6...

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