RSV 604

Alias: RSV-604 A-60444 RSV604 A60444 RSV 604 A 60444

Cat No.:V6399 Purity: ≥98%

COA Product Data Instructions for use SDS

RSV604 (A-60444) is an inhibitor (blocker/antagonist) of respiratory syncytial virus (RSV) replication.

RSV 604 Chemical Structure CAS No.: 676128-63-5
Product category: RSV

This product is for research use only, not for human use. We do not sell to patients.

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Top Publications Citing lnvivochem Products

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J Am Chem Soc 2022,144:21831-21836.

Cell 2020,183:1202-1218.e25.

Science Adv 2022:8,eabm9427.

Nature 2021,597(7874):119-125.

Cell 2020,183:1202-1218.e25.

PNAS Nexus 2022,1(3):pgac063.

ACS Nano 2023,17(10):9110-9125.

Biomaterial 2023 Sep16:302:122333.

Purity & Quality Control Documentation

Current batch：

Purity: ≥98%

COA

MSDS

Instructions

Product Description
Bioactivity & Protocols
Physicochemical Properties
Solubility Data
Calculators
Clinical Trial Information
Biological Data

Product Description

RSV604 (A-60444) is an inhibitor (blocker/antagonist) of respiratory syncytial virus (RSV) replication. RSV604 targets the nucleocapsid protein with Kd of 1.6 μM. RSV604 displays submicromolar activity (average EC50=0.8 μM) against numerous clinical isolates of RSV subtypes A and B.

Biological Activity I Assay Protocols (From Reference)

ln Vitro	Four laboratory strains of RSV (RSS, Long, A2, and B) with EC50 ranging from 0.5 to 0.9 μM in plaque reduction experiments are inhibited in growth by RSV604 (5 days) [1]. RSV604 (6 days) has an EC50 of 0.86 μM and prevents HEp-2 cell death caused by RSV[1]. In RSV-infected HEp-2 cells, RSV604 (3 days) decreases viral antigen synthesis with an EC50 of 1.7 μM [1]. Human airway epithelial (HAE) cells are dose-dependently inhibited from RSV infection by RSV604 (1–20 μM; 7 days) without exhibiting any cytotoxicity, basolateral fluid leaking to the apical surface, or ciliary beating frequency alterations [1].
References	[1]. RSV604, a novel inhibitor of respiratory syncytial virus replication. Antimicrob Agents Chemother. 2007 Sep;51(9):3346-53. [2]. Mechanism of action for respiratory syncytial virus inhibitor RSV604. Antimicrob Agents Chemother. 2015 Feb;59(2):1080-7.
Additional Infomation	RSV-604 is under investigation in clinical trial NCT00416442 (Safety, Tolerability and Pharmacokinetic Study of Single and Multiple Intravenous Doses of RSV604 in Healthy Subjects.).

These protocols are for reference only. InvivoChem does not independently validate these methods.

Physicochemical Properties

Exact Mass	388.134
CAS #	676128-63-5
Related CAS #	RSV604 racemate;676128-62-4;RSV604 (R enantiomer);932108-20-8
PubChem CID	5279172
Appearance	White to off-white solid powder
LogP	3.8
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	3
Heavy Atom Count	29
Complexity	634
Defined Atom Stereocenter Count	1
SMILES	FC1=C([H])C([H])=C([H])C([H])=C1N([H])C(N([H])[C@]1([H])C(N([H])C2=C([H])C([H])=C([H])C([H])=C2C(C2C([H])=C([H])C([H])=C([H])C=2[H])=N1)=O)=O
InChi Key	MTPVBMVUENFFLL-HXUWFJFHSA-N
InChi Code	InChI=1S/C22H17FN4O2/c23-16-11-5-7-13-18(16)25-22(29)27-20-21(28)24-17-12-6-4-10-15(17)19(26-20)14-8-2-1-3-9-14/h1-13,20H,(H,24,28)(H2,25,27,29)/t20-/m1/s1
Chemical Name	(S)-1-(2-fluorophenyl)-3-(2-oxo-5-phenyl-2,3-dihydro-1H-benzo[e][1,4]diazepin-3-yl)urea
Synonyms	RSV-604 A-60444 RSV604 A60444 RSV 604 A 60444
HS Tariff Code	2934.99.9001
Storage	Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Solubility Data

Solubility (In Vitro)	DMSO : ~100 mg/mL (~257.47 mM)
Solubility (In Vivo)	Solubility in Formulation 1: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. View More Solubility in Formulation 3: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly. (Please use freshly prepared in vivo formulations for optimal results.)

Solubility (In Vitro)

DMSO : ~100 mg/mL (~257.47 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

View More

Solubility in Formulation 3: ≥ 2.5 mg/mL (6.44 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

(Please use freshly prepared in vivo formulations for optimal results.)

Calculator

Mass

Concentration

Volume

Molecular Weight*

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

Calculate the Mass of a compound required to prepare a solution of known volume and concentration
Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume

See Example

An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?

Enter 350.26 in the Molecular Weight (MW) box
Enter 10 in the Concentration box and choose the correct unit (mM)
Enter 5 in the Volume box and choose the correct unit (mL)
Click the “Calculate” button
The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Concentration (Start)

Volume (Start)

Concentration (End)

Volume (End)

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:

Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
Enter 25 into the Concentration (End) box and select the correct unit (mM)
Enter 25 into the Volume (End) box and choose the correct unit (mL)
Click the “Calculate” button
The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box

Molecular formula

Total molecular weight

g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4 c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:

To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.

Definitions of molecular mass, molecular weight, molar mass and molar weight:

Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration

Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
Click the “Calculate” button
The answer appears in the Volume (to add to vial) box

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)

Dosage mg/kg

Average weight of animals g

Dosing volume per animal μL

Number of animals

Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)

% DMSO

% Tween 80

% ddH₂O

Calculation results

Working concentration： mg/mL；

Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O，mix and clarify.

Note： (1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.

Clinical Trial Information

NCT Number	Recruitment	interventions	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT00416442	COMPLETED	Drug: RSV604	Healthy	Novartis Pharmaceuticals	2006-10	Phase 1
NCT05913700	RECRUITING		Respiratory Syncytial Virus (RSV) Acute Disease Respiratory Viral Infection	Institute for Clinical Effectiveness, Japan	2023-07-01

Biological Data

Antiviral effect of delayed addition of inhibitor. Dose-dependent anti-RSV activities of RSV604 (A) and the fusion inhibitor BMS-433771 (B) were determined in vitro by plaque reduction assay; compounds were added either 2 h prior to infection (−2 h) or at 6 h postinfection (+6 h). The mean of duplicate wells per compound dilution was used to calculate the percent plaque reduction compared to compound-free, virus-infected control wells. Results shown are the means and SD for four independent experiments.[1].Chapman J, et al. RSV604, a novel inhibitor of respiratory syncytial virus replication. Antimicrob Agents Chemother. 2007 Sep;51(9):3346-53.

Sensitivities of WT and RSV mutant viruses to RSV604. Dose-dependent anti-RSV activities of RSV604 were determined by plaque reduction assay. Results are representative of three independent experiments. Mean EC50 values (± SD) for RSV604 against WT and mutant viruses can be found in Table Table33.[1].Chapman J, et al. RSV604, a novel inhibitor of respiratory syncytial virus replication. Antimicrob Agents Chemother. 2007 Sep;51(9):3346-53.

Dose-dependent inhibition of RSV replication in an in vitro model of human ciliated epithelium. RSV replication was measured visually by the expression of GFP from the virus genome (21). The top two panels show control cultures in the absence of drug. Compound (RSV604 or ribavirin) was added to the basolateral medium concomitantly with the virus at the concentrations indicated.[1].Chapman J, et al. RSV604, a novel inhibitor of respiratory syncytial virus replication. Antimicrob Agents Chemother. 2007 Sep;51(9):3346-53.