RO-3

Cat. No.: HY-19978 Purity: 97.32%: FAQs
Data Sheet SDS COA Handling Instructions

Molarity Calculator

RO-3 is a potent, CNS-penetrant, and orally active P2X₃ and P2X_2/3 antagonist with pIC₅₀s of 5.9 and 7.0 for human homomultimeric P2X₃ and heteromultimeric P2X_2/3 receptors, respectively. RO-3 shows selectivity for P2X₃ and P2X_2/3 over all other functional homomultimeric P2X receptors (IC₅₀ >10 μM at P2X_1,2,4,5,7).

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

RO-3 Chemical Structure

CAS No. : 1026582-88-6

Size	Price	Stock	Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO ready for reconstitution	USD 330	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in DMSO	USD 330	In-stock	Estimated Time of Arrival: December 31
Solid
1 mg	USD 142	In-stock	Estimated Time of Arrival: December 31
5 mg	USD 300	In-stock	Estimated Time of Arrival: December 31
10 mg	USD 450	In-stock	Estimated Time of Arrival: December 31
25 mg	USD 810	In-stock	Estimated Time of Arrival: December 31
50 mg	USD 1150	In-stock	Estimated Time of Arrival: December 31
100 mg		Get quote
200 mg		Get quote

or Bulk Inquiry

* Please select Quantity before adding items.

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

Featured Recommendations

•Related Screening Libraries:

•Related Small Molecules:

•Related Proteins:

Biological Activity
Purity & Documentation
Customer Review

Description

IC₅₀ & Target

pIC50: 5.9 (human homomultimeric P2X₃ receptor); 7.0 (human heteromultimeric P2X_2/3 receptor)^[1]

In Vivo

In a guinea pig ureter-afferent nerve preparation, and mouse bladder-pelvic nerve preparation, RO-3 dose-dependently reduces afferent nerve activity induced by distension or α,β-meATP^[1].
RO-3 has activity in several rodent models of pain, as well as in cystometry models optimized to measure various parameters associated with sensory regulation of the micturition reflex^[1].
RO-3 has moderate to high metabolic stability in rat and human hepatocytes and liver microsomes, and is highly permeable, orally bioavailable (14%), and has a reasonable in vivo plasma half-life (t_1/2=0.41 h) in rats^[1].

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

Molecular Weight

302.37

Formula

C₁₆H₂₂N₄O₂

CAS No.

1026582-88-6

Appearance

Solid

Color

Yellow to orange

SMILES

NC1=NC=C(CC2=CC(OC)=C(OC)C=C2C(C)C)C(N)=N1

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 : 125 mg/mL (413.40 mM; ultrasonic and warming and heat to 60°C; 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	3.3072 mL	16.5360 mL	33.0721 mL
5 mM	0.6614 mL	3.3072 mL	6.6144 mL
10 mM	0.3307 mL	1.6536 mL	3.3072 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)

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

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

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: ≥ 2.08 mg/mL (6.88 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (6.88 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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).

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: 97.32%

Select Batch:

Data Sheet (276 KB) SDS (251 KB)

COA (252 KB) HNMR (254 KB) LCMS (262 KB)

Handling Instructions (2659 KB)

Complete Stock Solution Preparation Table

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

DMSO	1 mM	3.3072 mL	16.5360 mL	33.0721 mL	82.6802 mL
	5 mM	0.6614 mL	3.3072 mL	6.6144 mL	16.5360 mL
	10 mM	0.3307 mL	1.6536 mL	3.3072 mL	8.2680 mL
	15 mM	0.2205 mL	1.1024 mL	2.2048 mL	5.5120 mL
	20 mM	0.1654 mL	0.8268 mL	1.6536 mL	4.1340 mL
	25 mM	0.1323 mL	0.6614 mL	1.3229 mL	3.3072 mL
	30 mM	0.1102 mL	0.5512 mL	1.1024 mL	2.7560 mL
	40 mM	0.0827 mL	0.4134 mL	0.8268 mL	2.0670 mL
	50 mM	0.0661 mL	0.3307 mL	0.6614 mL	1.6536 mL
	60 mM	0.0551 mL	0.2756 mL	0.5512 mL	1.3780 mL
	80 mM	0.0413 mL	0.2067 mL	0.4134 mL	1.0335 mL
	100 mM	0.0331 mL	0.1654 mL	0.3307 mL	0.8268 mL

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:

RO-31026582-88-6RO3RO 3Inhibitorinhibitorinhibit

Your Recently Viewed Products:

Product Name

Salutation

Applicant Name *

Email Address *

Phone Number *

Organization Name *

Department *

Requested quantity *

Country or Region *

Remarks