2. Neuronal Signaling
  3. Cholinesterase (ChE)
  4. Physostigmine

Physostigmine  (Synonyms: Eserine)

Cat. No.: HY-N6608 Purity: ≥98.0%
SDS COA Handling Instructions

Molarity Calculator

Physostigmine (Eserine) is a reversible acetylcholinesterase (AChE) inhibitor. Physostigmine can crosses the blood-brain barrier and stimulates central cholinergic neurotransmission. Physostigmine can reverse memory deficits in transgenic mice with Alzheimer's disease. Physostigmine is also an antidote for anticholinergic poisoning.

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

Physostigmine Chemical Structure

Physostigmine Chemical Structure

CAS No. : 57-47-6

Size Price Stock Quantity
1 mg USD 180 In-stock
5 mg   Get quote  
10 mg   Get quote  

* Please select Quantity before adding items.

This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of Physostigmine:

Physostigmine Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE Physostigmine

View All Cholinesterase (ChE) Isoform Specific Products:

View All Isoforms
AChE BChE

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

Physostigmine (Eserine) is a reversible acetylcholinesterase (AChE) inhibitor. Physostigmine can crosses the blood-brain barrier and stimulates central cholinergic neurotransmission. Physostigmine can reverse memory deficits in transgenic mice with Alzheimer's disease. Physostigmine is also an antidote for anticholinergic poisoning[1][2][3][4].

Cellular Effect
Cell Line Type Value Description References
HEK293 IC50
0.16 μM
Compound: Eserine
Inhibition of recombinant human AChE expressed in HEK293 cells using acetylthiocholine iodide as substrate preincubated for 5 mins before substrate addition measured after 10 mins by Ellman's method
Inhibition of recombinant human AChE expressed in HEK293 cells using acetylthiocholine iodide as substrate preincubated for 5 mins before substrate addition measured after 10 mins by Ellman's method
10.1039/C1MD00221J
In Vivo

Physostigmine (Eserine; 0.03-0.3 mg/kg; s.c.; daily for 6 weeks) improves deficits in contextual and cued memory in Tg(+) mice[2].
Physostigmine (IV; 0.1, 0.2 mg/kg) delays time to emergence from isoflurane anesthesia at doses ≥0.2 mg/kg in male Sprague-Dawley rats[4].

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

Animal Model: Heterozygous transgenic mice (Tg(+) mice)[2]
Dosage: 0.03, 0.1, and 0.3 mg/kg
Administration: SC; daily for 6 weeks
Result: Tended to normalize the contextual memory deficit in Tg(+) animals so that they became more similar to Tg(-) animals.
Clinical Trial
Molecular Weight

275.35

Formula

C15H21N3O2
CAS No.
Appearance

Solid

Color

Brown to black

SMILES

CN1[C@](N(C)CC2)([H])[C@]2(C)C3=C1C=CC(OC(NC)=O)=C3
Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (181.59 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.6317 mL 18.1587 mL 36.3174 mL
5 mM 0.7263 mL 3.6317 mL 7.2635 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • 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 (9.08 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.
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.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
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).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.92%

SDS (252 KB)

COA (251 KB) HNMR (485 KB) LCMS (94 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. 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 1 mM 3.6317 mL 18.1587 mL 36.3174 mL 90.7935 mL
5 mM 0.7263 mL 3.6317 mL 7.2635 mL 18.1587 mL
10 mM 0.3632 mL 1.8159 mL 3.6317 mL 9.0794 mL
15 mM 0.2421 mL 1.2106 mL 2.4212 mL 6.0529 mL
20 mM 0.1816 mL 0.9079 mL 1.8159 mL 4.5397 mL
25 mM 0.1453 mL 0.7263 mL 1.4527 mL 3.6317 mL
30 mM 0.1211 mL 0.6053 mL 1.2106 mL 3.0265 mL
40 mM 0.0908 mL 0.4540 mL 0.9079 mL 2.2698 mL
50 mM 0.0726 mL 0.3632 mL 0.7263 mL 1.8159 mL
60 mM 0.0605 mL 0.3026 mL 0.6053 mL 1.5132 mL
80 mM 0.0454 mL 0.2270 mL 0.4540 mL 1.1349 mL
100 mM 0.0363 mL 0.1816 mL 0.3632 mL 0.9079 mL
  • No file chosen (Maximum size is: 1024 Kb)
  • If you have published this work, please enter the PubMed ID.
  • Your name will appear on the site.

Physostigmine 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:

Physostigmine57-47-6EserineCholinesterase (ChE)blood-brainbarrierAlzheimer'santidoteInhibitorinhibitorinhibit

Your Recently Viewed Products:

Inquiry Online

Your information is safe with us. * Required Fields.

Product Name

  

Salutation

Applicant Name *

 

Email Address *

Phone Number *

 

Organization Name *

Department *

 

Requested quantity *

Country or Region *

      

Remarks

Bulk Inquiry

Inquiry Information

Product Name:
Physostigmine
Cat. No.:
HY-N6608
Quantity:
MCE Japan Authorized Agent:

Customer Review

Thank You for Your Feedback!

Request for HNMR Report

Please fill out this form to request the QC report. We will send it to your Email address shortly.

Your information is safe with us. * Required Fields.

Product Name

  

Lot #

Applicant Name *

 

Email Address *

Phone Number

 

Department *

Organization Name *

 

Country or Region *

Remarks

SAFETY DATA SHEET (SDS)

English - EN (252 KB) Français - FR (252 KB) Deutsch - DE (252 KB) Norwegian - NO (252 KB) Español - ES (252 KB) Swedish - SV (252 KB)

Request for HNMR Report

We have received your request and will respond to you as soon as possible.