2. GPCR/G Protein Neuronal Signaling
  3. Adrenergic Receptor
  4. (S)-Timolol maleate

(S)-Timolol maleate  (Synonyms: (S)-L-714,465 maleate; MK 950)

Cat. No.: HY-17380 Purity: 99.89%
COA Handling Instructions

Molarity Calculator

(S)-Timolol Maleate (L-714,465 Maleate) is a non-cardioselective hydrophilic β-adrenoceptor blocker. (S)-Timolol Maleate is widely used as standard medication for intraocular pressure (glaucoma) by preventing the production of aqueous humor. (S)-Timolol Maleate can be used for hypertension, angina pectoris and myocardial infarction.

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

(S)-Timolol maleate Chemical Structure

(S)-Timolol maleate Chemical Structure

CAS No. : 26921-17-5

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 77 In-stock
Solution
10 mM * 1 mL in DMSO USD 77 In-stock
Solid
100 mg USD 70 In-stock
200 mg USD 112 In-stock
500 mg   Get quote  
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Customer Review

Based on 2 publication(s) in Google Scholar

Other Forms of (S)-Timolol maleate:

(S)-Timolol maleate Related Antibodies

Top Publications Citing Use of Products

2 Publications Citing Use of MCE (S)-Timolol maleate

View All Adrenergic Receptor Isoform Specific Products:

View All Isoforms
α adrenergic receptor β adrenergic receptor

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

(S)-Timolol Maleate (L-714,465 Maleate) is a non-cardioselective hydrophilic β-adrenoceptor blocker. (S)-Timolol Maleate is widely used as standard medication for intraocular pressure (glaucoma) by preventing the production of aqueous humor. (S)-Timolol Maleate can be used for hypertension, angina pectoris and myocardial infarction[1][2][3].

IC50 & Target

β adrenergic receptor

 

In Vitro

Timolol maleate represents a chiral compound with one asymmetric carbon in its structure. Single isomer, (S)-enantiomer, is a non-cardioselective β-adrenergic blocker. Its commonest application is in topical treatment of increasing intraocular pressure in patients with chronic open angle glaucoma and also in aphakic patients[1].

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

(S)-Timolol maleate Related Antibodies
In Vivo

There are reports that indicate lower biological activity of (R)-isomer compared to (S)-isomer. Namely, (R)-timolol is 49 times less potent than (S)-timolol on β-adrenoceptor in animals, 13 times less potent in constricting the airways of normal subjects[1].

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

432.49

Formula

C17H28N4O7S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O[C@H](COC1=NSN=C1N2CCOCC2)CNC(C)(C)C.O=C(O)/C=C\C(O)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture

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

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (231.22 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 50 mg/mL (115.61 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.3122 mL 11.5610 mL 23.1219 mL
5 mM 0.4624 mL 2.3122 mL 4.6244 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). 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 (5.78 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 (5.78 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: 20 mg/mL (46.24 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

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: 99.89%

COA (257 KB) LCMS (266 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). 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
H2O / DMSO 1 mM 2.3122 mL 11.5610 mL 23.1219 mL 57.8048 mL
5 mM 0.4624 mL 2.3122 mL 4.6244 mL 11.5610 mL
10 mM 0.2312 mL 1.1561 mL 2.3122 mL 5.7805 mL
15 mM 0.1541 mL 0.7707 mL 1.5415 mL 3.8537 mL
20 mM 0.1156 mL 0.5780 mL 1.1561 mL 2.8902 mL
25 mM 0.0925 mL 0.4624 mL 0.9249 mL 2.3122 mL
30 mM 0.0771 mL 0.3854 mL 0.7707 mL 1.9268 mL
40 mM 0.0578 mL 0.2890 mL 0.5780 mL 1.4451 mL
50 mM 0.0462 mL 0.2312 mL 0.4624 mL 1.1561 mL
60 mM 0.0385 mL 0.1927 mL 0.3854 mL 0.9634 mL
80 mM 0.0289 mL 0.1445 mL 0.2890 mL 0.7226 mL
100 mM 0.0231 mL 0.1156 mL 0.2312 mL 0.5780 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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(S)-Timolol maleate 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:

(S)-Timolol26921-17-5(S)-L-714,465 MK 950MK950MK 950MK-950Adrenergic ReceptorBeta ReceptorNon-cardioselectivehydrophilicβ-adrenoceptorintraocularpressureglaucomahypertensionanginapectorismyocardialinfarctionInhibitorinhibitorinhibit

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