2. Neuronal Signaling
  3. Cholinesterase (ChE)
  4. Neostigmine Bromide

Neostigmine Bromide  (Synonyms: Eustigmin bromide; Neoserine bromide)

Cat. No.: HY-B0423 Purity: 99.91%
COA Handling Instructions

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Neostigmine (Eustigmin) Bromide is an orally active and reversible cholinesterase inhibitor that acts on myasthenia gravis to prolong and intensify the muscarinic and nicotinic effects of acetylcholine. Neostigmine Bromide can be used in anesthesia to reverse the neuromuscular blockade produced by competitive neuromuscular blockers.

For research use only. We do not sell to patients.

Neostigmine Bromide Chemical Structure

Neostigmine Bromide Chemical Structure

CAS No. : 114-80-7

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10 mM * 1 mL in DMSO
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Based on 1 publication(s) in Google Scholar

Other Forms of Neostigmine Bromide:

Neostigmine Bromide Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE Neostigmine Bromide

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Description

Neostigmine (Eustigmin) Bromide is an orally active and reversible cholinesterase inhibitor that acts on myasthenia gravis to prolong and intensify the muscarinic and nicotinic effects of acetylcholine. Neostigmine Bromide can be used in anesthesia to reverse the neuromuscular blockade produced by competitive neuromuscular blockers[1][2][3][4].

In Vivo


Pharmacokinetic parameters of oral tablet and nasal microspheres of Neostigmine Bromide in rabbits[1]

Formulation Tmax (h) Cmax (ng/mL) AUC (ng·h/mL) Kel (h-1) T1/2 (h)
Oral 1.5 60.07 94.17 0.582 1.19
IN1 3 95.51 446.25 0.164 4.22
IN2 3 90.32 406.85 0.196 3.53

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
Molecular Weight

303.20

Formula

C12H19BrN2O2
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

C[N+](C)(C)C1=CC=CC(OC(N(C)C)=O)=C1.[Br-]
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (329.82 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 100 mg/mL (329.82 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.2982 mL 16.4908 mL 32.9815 mL
5 mM 0.6596 mL 3.2982 mL 6.5963 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (8.25 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (8.25 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 100 mg/mL (329.82 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.91%

COA (247 KB) HNMR (243 KB) LCMS (98 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 3.2982 mL 16.4908 mL 32.9815 mL 82.4538 mL
5 mM 0.6596 mL 3.2982 mL 6.5963 mL 16.4908 mL
10 mM 0.3298 mL 1.6491 mL 3.2982 mL 8.2454 mL
15 mM 0.2199 mL 1.0994 mL 2.1988 mL 5.4969 mL
20 mM 0.1649 mL 0.8245 mL 1.6491 mL 4.1227 mL
25 mM 0.1319 mL 0.6596 mL 1.3193 mL 3.2982 mL
30 mM 0.1099 mL 0.5497 mL 1.0994 mL 2.7485 mL
40 mM 0.0825 mL 0.4123 mL 0.8245 mL 2.0613 mL
50 mM 0.0660 mL 0.3298 mL 0.6596 mL 1.6491 mL
60 mM 0.0550 mL 0.2748 mL 0.5497 mL 1.3742 mL
80 mM 0.0412 mL 0.2061 mL 0.4123 mL 1.0307 mL
100 mM 0.0330 mL 0.1649 mL 0.3298 mL 0.8245 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Neostigmine Bromide Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Neostigmine114-80-7EustigminNeoserineCholinesterase (ChE)orally activecholinesterasemyasthenia gravismuscarinic and nicotinic effectsanesthesiaInhibitorinhibitorinhibit

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