Merbromin (Synonyms: Mercury dibromofluorescein disodium salt; ZP1)

Cat. No.: HY-B0961: FAQs
Data Sheet SDS COA Handling Instructions

Molarity Calculator

Merbromin is a mixed inhibitor of the 3-chymotrypsin-like protease (3CLpro) of SARS-CoV-2, with an IC₅₀ of 2.7 μM. Merbromin effectively inhibits the replication of the Zika virus (ZIKV) and shows anti-ZIKV activity by inhibiting ZIKVpro. Merbromin can also be used as a topical disinfectant for cuts and scrapes, and it serves as a biological dye.

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

Merbromin Chemical Structure

CAS No. : 129-16-8

Size	Price	Stock	Quantity
Solution
10 mM * 1 mL in Water	USD 55	In-stock	Estimated Time of Arrival: December 31
Solid
500 mg	USD 50	In-stock	Estimated Time of Arrival: December 31
1 g	USD 60	In-stock	Estimated Time of Arrival: December 31
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10 g		Get quote

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Description

IC₅₀ & Target

3CLpro

2.7 μM (IC₅₀)

In Vitro

Merbromin (0-10 μM) affects both the K_M and K_cat of 3CLpro, where the K_M value increases from 9.02 μM to 14.28 μM, and the K_cat value decreases from 1.45 min to 0.63 min^[1].
Merbromin with the K_D for 3CLpro is 0.23 μM^[1].

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

Molecular Weight

752.67

Formula

C₂₀H₁₀Br₂HgNa₂O₆

CAS No.

129-16-8

Appearance

Solid

Color

Light brown to black

SMILES

O[Hg]C1=C(O[Na])C(Br)=CC(C2C3=C(C=CC=C3)C(O[Na])=O)=C1OC4=C2C=C(Br)C(O)=C4

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 : 6.67 mg/mL (8.86 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	1.3286 mL	6.6430 mL	13.2860 mL
5 mM	0.2657 mL	1.3286 mL	2.6572 mL
10 mM	---	---	---

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.

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Dilution Calculator

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

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

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)

Volume _(start)

Concentration _(final)

Volume _(final)

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: ≥ 0.67 mg/mL (0.89 mM); Clear solution

This protocol yields a clear solution of ≥ 0.67 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (6.7 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: ≥ 0.67 mg/mL (0.89 mM); Clear solution

This protocol yields a clear solution of ≥ 0.67 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (6.7 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.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

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).

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

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

Select Batch:

Data Sheet (280 KB) SDS (728 KB)

COA (258 KB) Others (210 KB)

Handling Instructions (2659 KB)

References

[1]. Xiangling Cui , et al. Identification of Theaflavin-3,3'-Digallate as a Novel Zika Virus Protease Inhibitor. Front Pharmacol. 2020 Oct 21;11:514313. [Content Brief]

[2]. Junjie Chen, et al. Merbromin is a mixed-type inhibitor of 3-chyomotrypsin like protease of SARS-CoV-2. Biochem Biophys Res Commun. 2022 Feb 5:591:118-123. [Content Brief]

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

DMSO	1 mM	1.3286 mL	6.6430 mL	13.2860 mL	33.2151 mL
DMSO	5 mM	0.2657 mL	1.3286 mL	2.6572 mL	6.6430 mL

Merbromin Related Classifications

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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:

Merbromin129-16-8Mercury dibromofluorescein disodium ZP1ZP1ZP 1ZP-1FlavivirusProteasomeZIKV3CLproInhibitorinhibitorinhibit

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