Oil Red O

Catalog No.S4498 Synonyms: ORO

For research use only.

Oil red O (ORO) is a commonly used dye for the tissue staining, which recognizes nitroglycerin and cholesterol esters. Oil red O can be fluorescently lighted up upon meeting dsDNA with emission peak localized at 600 nm, although it almost does not fluoresce by itself.

Oil Red O Chemical Structure

CAS No. 1320-06-5

Purity & Quality Control

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Biological Activity

Description Oil red O (ORO) is a commonly used dye for the tissue staining, which recognizes nitroglycerin and cholesterol esters. Oil red O can be fluorescently lighted up upon meeting dsDNA with emission peak localized at 600 nm, although it almost does not fluoresce by itself.

Protocol (from reference)

Solubility (25°C)

In vitro

DMSO 82 mg/mL
(200.73 mM)
Water Insoluble
Ethanol Insoluble

Chemical Information

Molecular Weight 408.49
Formula

C26H24N4O

CAS No. 1320-06-5
Storage 3 years -20°C powder
2 years -80°C in solvent

In vivo Formulation Calculator (Clear solution)

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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
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Molarity Calculator

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Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT04757701 Not yet recruiting Other: Social Behavioral surveys interviews and focus groups HPV East Carolina University February 2022 --
NCT05106478 Recruiting Device: AuraGain Airway Complication of Anesthesia Assiut University November 1 2021 --
NCT05148312 Recruiting Drug: Budesonide Inhalant Product Pharmacokinetics Aquilon Pharmaceuticals S.A. November 12 2021 Phase 1
NCT05017298 Not yet recruiting Biological: Autologous adipose-derived stem cells Corona Virus Infection|Covid19 Celltex Therapeutics Corporation November 1 2021 Phase 2

(data from https://clinicaltrials.gov, updated on 2022-01-17)

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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