Phenylephrine Hydrochloride Ophthalmic Solution
» Phenylephrine Hydrochloride Ophthalmic Solution is a sterile, aqueous solution of Phenylephrine Hydrochloride. It contains not less than 90.0 percent and not more than 115.0 percent of the labeled amount of C9H13NO2·HCl. It may contain a suitable antimicrobial agent and buffer and may contain suitable antioxidants.
Packaging and storage—
Preserve in tight, light-resistant containers of not more than 15-mL size.
USP Reference standards 
11
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11—
USP Phenylephrine Hydrochloride RS 
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Identification—
It responds to the Identification test under Phenylephrine Hydrochloride Injection.
Sterility 71:
meets the requirements.
71:
meets the requirements.
pH 791:
between 4.0 and 7.5 for buffered Ophthalmic Solution; between 3.0 and 4.5 for unbuffered Ophthalmic Solution.
791:
between 4.0 and 7.5 for buffered Ophthalmic Solution; between 3.0 and 4.5 for unbuffered Ophthalmic Solution.
Assay—
Mobile phase, Dilution solvent, Standard preparation, Resolution solution, and Chromatographic system—
Prepare as directed in the Assay under Phenylephrine Hydrochloride Nasal Jelly.
Assay preparation—
Transfer an accurately measured volume of Ophthalmic Solution, equivalent to about 10 mg of phenylephrine hydrochloride, to a 100-mL volumetric flask. Dilute with Dilution solvent to volume, and mix.
Procedure—
Separately inject equal volumes (about 20 µL) of the Standard preparation and the Assay preparation into the chromatograph, record the chromatograms, and measure the responses for the major peaks. Calculate the quantity, in mg, of C9H13NO2·HCl in each mL of Ophthalmic Solution taken by the formula:
100(C / V)(rU / rS)
in which C is the concentration, in mg per mL, of USP Phenylephrine Hydrochloride RS in the Standard preparation, V is the volume, in mL, of Ophthalmic Solution taken, and rU and rS are the peak responses obtained from the Assay preparation and the Standard preparation, respectively.
Auxiliary Information—
Please check for your question in the FAQs before contacting USP.
| Topic/Question | Contact | Expert Committee |
|---|---|---|
| Monograph | Clydewyn M. Anthony, Ph.D.
Senior Scientific Liaison 1-301-816-8139 |
(SM22010) Monographs - Small Molecules 2 |
| Reference Standards | RS Technical Services 1-301-816-8129 rstech@usp.org |
|
| 71 |
Radhakrishna S Tirumalai, Ph.D.
Principal Scientific Liaison 1-301-816-8339 |
(GCM2010) General Chapters - Microbiology |
USP35–NF30 Page 4302