Ophthalmic Ointment Monographs: Chloramphenicol and Sulfate Ophthalmic Ointment

Type of Posting Revision Bulletin Posting Date 29–Jul–2016 Official Date 01–Aug–2016 Expert Committee Chemical Medicines Monographs 1 to 6 Reason for Revision Compliance

In accordance with the Rules and Procedures of the 2015-2020 Council of Experts, the Chemical Medicines Expert Committees 1 to 6 has revised the monographs listed below. The purpose of the revision is to replace the requirement to comply with the entire content of the USP general chapter Ophthalmic Products—Quality Tests <771> with a requirement to comply only with the subsection for Particulate and Foreign Matter in Ophthalmic Products—Quality Tests <771>, and with the section for Container Content for those monographs where the requirement for Minimum Fill was deleted.

• Atropine Sulfate Ophthalmic Ointment • Ophthalmic Ointment • Bacitracin Zinc and Polymyxin B Sulfate Ophthalmic Ointment • Bland Lubricating Ophthalmic Ointment • Chloramphenicol and Polymyxin B Sulfate Ophthalmic Ointment • Chloramphenicol Ophthalmic Ointment • Hydrochloride Ophthalmic Ointment • Ophthalmic Ointment • Sodium Phosphate Ophthalmic Ointment • Ophthalmic Ointment • and Acetate Ophthalmic Ointment • Gentamicin Sulfate Ophthalmic Ointment • Acetate Ophthalmic Ointment • Ophthalmic Ointment • and Polymyxin B Sulfates, Bacitracin Zinc, and Hydrocortisone Acetate Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates and Bacitracin Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates and Bacitracin Zinc Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates and Dexamethasone Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates, Bacitracin Zinc, and Hydrocortisone Ophthalmic Ointment • Neomycin and Polymyxin B Sulfates, Bacitracin, and Hydrocortisone Acetate Ophthalmic Ointment • Neomycin Sulfate and Dexamethasone Sodium Phosphate Ophthalmic Ointment • Neomycin Sulfate Ophthalmic Ointment • Hydrochloride and Polymyxin B Sulfate Ophthalmic Ointment • Sodium Chloride Ophthalmic Ointment • Sulfacetamide Sodium and Prednisolone Acetate Ophthalmic Ointment • Sulfacetamide Sodium Ophthalmic Ointment • Hydrochloride Ophthalmic Ointment • and Dexamethasone Ophthalmic Ointment • Tobramycin Ophthalmic Ointment

The Revision Bulletins for the monographs listed above supersede the currently official version of these monographs. The Revision Bulletin will be incorporated in the First Supplement to USP 40–NF 35.

Should you have any questions, please contact Margareth R. C. Marques, M.Sc., Ph.D. (301-816-8106 or [email protected]).

C177134_160510-M15240-CHM12015, Rev. 0 20160729 Revision Bulletin Official August 1, 2016 Chloramphenicol 1

. rU = peak height from the Sample solution Chloramphenicol and Polymyxin B rS = peak height from the Standard solution CS = concentration of USP Chloramphenicol RS in Sulfate Ophthalmic Ointment the Standard solution (mg/mL) CU = nominal concentration of chloramphenicol in DEFINITION the Sample solution (mg/mL) Chloramphenicol and Polymyxin B Sulfate Ophthalmic P = potency of chloramphenicol in USP Ointment contains NLT 90.0% and NMT 120.0% of the Chloramphenicol RS (µg/mg) labeled amount of chloramphenicol (C11H12Cl2N2O5) and F = conversion factor, 0.001 mg/µg NLT 90.0% and NMT 125.0% of the labeled amount of Acceptance criteria: 90.0%–120.0% polymyxin B. • POLYMYXIN B (See —Microbial Assays 〈81〉.) IDENTIFICATION Sample solution: Shake a portion of Ophthalmic Oint- • A. The retention time of the major peak of the Sample ment containing nominally 5000 Polymyxin B Units solution corresponds to that of the Standard solution, as with 50 mL of ether in a separator. Extract with four obtained in the Assay. 20-mL portions of Buffer B.6. Combine the aqueous ex- ASSAY tracts in a 100-mL volumetric flask, and dilute with Buffer B.6 to volume. Change to read: Analysis: Proceed as directed in the chapter. Dilute the Sample solution with Buffer B.6 to obtain a Test Dilution • CHLORAMPHENICOL having a concentration that is nominally equivalent to Mobile phase: Methanol, glacial , and water the median level of the standard. (450:1:550) Acceptance criteria: 90.0%–125.0% Standard stock solution: 0.25 mg/mL of USP Chlor- RS in methanol SPECIFIC TESTS Standard solution: 0.1 mg/mL of USP Chlorampheni- • STERILITY TESTS 〈71〉: Meets the requirements col RS from the Standard stock solution in Mobile phase. ▲ Pass through a .suitable▲USP39 filter, and use the clear Delete the following: filtrate. Sample stock solution: Nominally 0.25 mg/mL of ▲ .• METAL PARTICLES IN OPHTHALMIC OINTMENTS 〈751〉: chloramphenicol prepared as follows. Transfer a portion Meets the requirements of Ophthalmic Ointment containing nominally 25 mg of chloramphenicol to a suitable conical flask. Add ▲USP39 20 mL of cyclohexane, mix, and sonicate for 2 min. Add 60 mL of methanol. Filter this mixture, collecting Change to read: the filtrate in a 100-mL volumetric flask. Wash the filter ▲ with methanol, collecting the washings in the volumet- .• OTHER REQUIREMENTS: It meets the requirements •.for ric flask. Dilute with methanol to volume. Transfer Particulate and Foreign Matter• (RB 1-Aug-2016) in Ophthalmic

50.0 mL of the resulting solution to a suitable round- Products—Quality Tests 〈771〉, •.Drug Product Quality, Univer- bottom flask, and evaporate to dryness by rotating the sal Tests, Particulate and Foreign Matter.• (RB 1-Aug-2016) flask under vacuum in a water bath at 35°. Dissolve ▲USP39 the residue in 50.0 mL of methanol. Sample solution: Nominally 0.1 mg/mL of chloram- ADDITIONAL REQUIREMENTS phenicol from the Sample stock solution in Mobile • PACKAGING AND STORAGE: Preserve in collapsible ▲ phase. Pass through a .suitable▲USP39 filter, and use the ophthalmic ointment tubes. clear filtrate. • USP REFERENCE STANDARDS 〈11〉 Chromatographic system USP Chloramphenicol RS (See Chromatography 〈621〉, System Suitability.) USP Polymyxin B Sulfate RS Mode: LC Detector: UV 280 nm Column: 4.6-mm × 10-cm; 5-µm packing L1 Flow rate: 1 mL/min Injection volume: 10 µL System suitability Sample: Standard solution ▲ Suitability requirements .▲USP39 Tailing factor: NMT 2.0 Relative standard deviation: NMT 1.0% Analysis Samples: Standard solution and Sample solution Calculate the percentage of the labeled amount of chloramphenicol (C11H12Cl2N2O5) in the portion of Ophthalmic Ointment taken:

Result = (rU/rS) × (CS/CU) × P × F × 100

2016 The United States Pharmacopeial Convention All Rights Reserved. C177134_160510-M15240-CHM12015, Rev. 0 20160729