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Heterocyclic building blocks

Pralidoxime mesylate

Also known as Pralidoxime mesilate, Pralidoxime methane sulphonate, Pralidoxime methanesulfonate

CAS 154-97-2Formula C8H12N2O4SMolar mass 232.26 g/molEC 205-839-8
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Pralidoxime mesylate chemical structure, C8H12N2O4S, CAS 154-97-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
154-97-2
Formula
C8H12N2O4S
Molar mass
232.26 g/mol
EC number
205-839-8
HS code
293339
Category
Heterocyclic building blocks

What is Pralidoxime mesylate?

Plain description, key identifiers and synonyms

Pralidoxime mesylate is a methanesulfonate salt and a pyridinium salt. It has a role as a cholinergic drug and a cholinesterase reactivator. It contains a pralidoxime.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methanesulfonate, (NE)-N-[(1-methylpyridin-1-ium-2-yl)methylidene]hydroxylamine
CAS number
154-97-2 CAS number cross-checkedOther or deprecated CAS: 105404-71-5
EC number
205-839-8
Molecular formula
C8H12N2O4S
UNII
45CO7XIN2K
InChIKey
WWZYJJGFUIAWNW-UHFFFAOYSA-N
InChI
InChI=1S/C7H8N2O.CH4O3S/c1-9-5-3-2-4-7(9)6-8-10;1-5(2,3)4/h2-6H,1H3;1H3,(H,2,3,4)
Canonical SMILES
CS(=O)(=O)[O-].C[n+]1ccccc1C=NO
Isomeric SMILES
C[N+]1=CC=CC=C1/C=N/O.CS(=O)(=O)[O-]

Synonyms

  • Pralidoxime mesilate
  • Pralidoxime methane sulphonate
  • Pralidoxime methanesulfonate
  • methanesulfonate, (NE)-N-[(1-methylpyridin-1-ium-2-yl)methylidene]hydroxylamine
  • Pralidoxime mesylate (USAN)
  • 2-Pam methanesulfonate
  • Pralidoxime methosulfate
  • Protopam methanesulfonate
  • 2-Hydroxyiminomethyl-N-methylpyridinium methanesulphonate
  • Pyridine-2-aldoxime methyl methane sulfonate
  • 1-Methylpyridinium-2-aldoxime methanesulfonate
  • N-Methylpyridinium methane sulfonate 2-aldoxime
  • N-Methylpyridinium-2-aldoxime methanesulphonate
  • 2-Formyl-1-methylpyridinium methanesulfonate oxime
  • 2-Formyl-N-methylpyridinium oxime methanesulfonate
  • Pyridinium, 2-aldoxime, N-methyl methanesulphonate
  • 2-Hydroxyiminomethyl-N-methylpyridinium methanesulfonate
  • Pyridinium, 2-formyl-1-methyl-, methanesulfonate oxime
  • Pyridinium, 2-((hydroxyimino)methyl)-1-methyl-, methanesulfonate
  • Pyridinium, 2-((hydroxyimino)methyl)-1-methyl-, methanesulfonate (salt)
  • 2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
232.26 g/molcalc.
Exact mass
232.0518 Dacalc.
LogP (octanol/water)
-0.52calc.
Topological polar surface area
93.67 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
1calc.
Heavy atoms
15calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.25calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccncc1

c1ccncc1

1 ring, 6 atoms, the Pyridine ring system.

118,162 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Pralidoxime mesylate suppliers

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Where suppliers are based

1 supplier in 1 country

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Pralidoxime mesylate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • cholinergic drug
  • cholinesterase reactivator
  • enzyme reactivator
  • neurotransmitter agent
  • pharmaceutical

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Pralidoxime mesylate is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Pralidoxime mesylate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pralidoxime mesylate, based on the data on this page

What is Pralidoxime mesylate?

Pralidoxime mesylate is a methanesulfonate salt and a pyridinium salt. It has a role as a cholinergic drug and a cholinesterase reactivator. It contains a pralidoxime.

What is the CAS number of Pralidoxime mesylate?

The CAS registry number of Pralidoxime mesylate is 154-97-2. Other or deprecated CAS numbers: 105404-71-5.

What is the molecular formula and weight of Pralidoxime mesylate?

The molecular formula of Pralidoxime mesylate is C8H12N2O4S and its molar mass is 232.26 g/mol.

What is Pralidoxime mesylate used for?

Known uses and roles of Pralidoxime mesylate include building blocks in research and laboratory, screening compounds in research and laboratory, cholinergic drug, cholinesterase reactivator, enzyme reactivator and 2 more.

Is Pralidoxime mesylate hazardous?

No GHS hazard classification for Pralidoxime mesylate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pralidoxime mesylate?

Pralidoxime mesylate is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pralidoxime mesylate?

CompoundList lists 1 supplier of Pralidoxime mesylate in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Pralidoxime mesylate?

Suppliers quote Pralidoxime mesylate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Pralidoxime mesylate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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