Oxycodone Hydrochloride Extended-Release Tablets
DEFINITION
Oxycodone Hydrochloride Extended-Release Tablets contain NLT 90.0% and NMT 110.0% of the labeled amount of oxycodone hydrochloride (C18H21NO4·HCl).
IDENTIFICATION
• A.
The retention time of the major peak of the Sample solution corresponds to that of the Standard solution, as obtained in the Assay.
ASSAY
• Procedure
Buffer solution:
2 g/L of sodium heptanesulfonate in water. Add 13.3 mL/L of glacial acetic acid, and adjust with 5 N sodium hydroxide solution to a pH of 3.50 ± 0.05.
Mobile phase:
Acetonitrile and Buffer solution (1:3)
Standard solution:
0.036 mg/mL of USP Oxycodone RS in Mobile phase
Sample stock solution:
Transfer 10 Tablets into an appropriate volumetric flask, add a volume of a mixture of methanol and acetonitrile (1:1), equivalent to 50% of the volumetric flask volume, sonicate for 10 min, and stir for 20 min. Dilute with Buffer solution to volume.
Sample solution:
0.04 mg/mL of oxycodone hydrochloride, from the Sample stock solution, diluted with Mobile phase to volume. Pass through a suitable filter.
Chromatographic system
Mode:
LC
Detector:
UV 280 nm
Column:
4.6-mm × 15-cm; packing L1
Flow rate:
1.0 mL/min
Injection size:
20 µL
System suitability
Sample:
Standard solution
Suitability requirements
Column efficiency:
NLT 4000 theoretical plates
Tailing factor:
NMT 2.0
Relative standard deviation:
NMT 2.0%
Analysis
Samples:
Standard solution and Sample solution
Calculate the percentage of C18H21NO4·HCl in the portion of Tablets taken:
Result = (rU/rS) × (CS/CU) × (Mr1/Mr2) × 100
Acceptance criteria:
90.0%110.0%
PERFORMANCE TESTS
• Dissolution 711
Test 1
Medium:
Simulated gastric fluid (without enzymes); 900 mL
Apparatus 1:
100 rpm
Time:
1, 2, 4, 6, and 8 h for Tablets labeled to contain 10, 20, or 40 mg; 1, 2, 4, and 6 h for Tablets labeled to contain 80 mg
Standard stock solution
Tablets labeled to contain 10 mg:
398 µg/mL of USP Oxycodone RS in Medium
Tablets labeled to contain 20, 40, or 80 mg:
796 µg/mL of USP Oxycodone RS in Medium
Standard solution:
Dilute the appropriate Standard stock solution with Medium to obtain solutions containing L/900 mg/mL, with L being the oxycodone Tablet label claim, in mg.
Sample solution:
Pass a portion of the solution under test through a suitable filter. Dilute with Medium, if necessary.
Spectrometric conditions
Mode:
UV
Analytical wavelength:
About 226 nm (shoulder)
Cell
For Tablets labeled to contain 10, 20, or 40 mg:
1.0 cm
For Tablets labeled to contain 80 mg:
0.5 cm
Blank:
Medium
Analysis
Samples:
Standard solution and Sample solution
For Tablets labeled to contain 10, 20, or 40 mg, calculate the amount of C18H21NO4 dissolved:
Result = [C × (AU/AS) × (V VS) + (C1 × VS) + (C2 × VS) + (C4 × VS) + (C6 × VS) + (C8 × VS)] × (100/L)
For Tablets labeled to contain 80 mg, calculate the amount of C18H21NO4 dissolved:
Result = [C × (AU/AS) × (V VS) + (C1 × VS) + (C2 × VS) + (C4 × VS) + (C6 × VS)] × (100/L)
Tolerances:
The percentages of the labeled amount of C18H21NO4 dissolved at the times specified conform to Acceptance Table 2.
For Tablets Labeled to Contain 10, 20, or 40 mg
For Tablets Labeled to Contain 80 mg
Test 2:
If the product complies with this test, the labeling indicates that the product meets USP Dissolution Test 2.
Medium:
Simulated gastric fluid (without enzymes); 900 mL
Apparatus 1:
100 rpm
Time:
1, 4, and 12 h
0.85% phosphoric acid:
10 mL/L of phosphoric acid in water
Standard stock solution:
0.9 mg/mL of USP Oxycodone RS in 0.85% phosphoric acid
Standard solution:
Dilute the Standard stock solution, quantitatively and stepwise, with Medium to obtain a solution having a concentration of 40% of the Tablet label claim. [NoteThis solution is stable for 2 weeks at room temperature. ]
Sample solution:
Pass the solution under test through a suitable filter of 0.45-µm pore size.
Mobile phase:
Weigh 23.1 g of monobasic potassium phosphate into a 4-L flask, and dissolve with 3400 mL of water. Add 4 mL of triethylamine, and adjust with 0.85% phosphoric acid to a pH of 3.0 ± 0.1. Add 600 mL of methanol and 20 mL of tert-butyl methyl ether, and mix well.
Chromatographic system
Mode:
LC
Detector:
UV 230 nm
Column:
3.9-mm × 30-cm; 10-µm packing L1
Column temperature:
60
Flow rate:
1 mL/min
Injection size:
50 µL
System suitability
Sample:
Standard solution
Suitability requirements
Capacity factor:
NLT 0.5
Tailing factor:
0.751.5
Relative standard deviation:
NMT 2%
Analysis
Samples:
Standard solution and Sample solution
Calculate the amount of C18H21NO4 dissolved:
Result = [C × (rU/rS) × (V VS) + (C1 × VS) + (C4 × VS) + (C12 × VS)] × (100/L)
Tolerances:
The percentages of the labeled amount of C18H21NO4 dissolved at the times specified conform to Acceptance Table 2.
For Tablets Labeled to Contain 10 mg
For Tablets Labeled to Contain 20 mg
For Tablets Labeled to Contain 40 mg
For Tablets Labeled to Contain 80 mg
• Uniformity of Dosage Units 905:
Meet the requirements
IMPURITIES
Organic Impurities
• Procedure: Limit of Oxycodone Related Compound B (Oxycodone N-Oxide)
Diluent:
10 mL/L of phosphoric acid in water
Buffer:
6.8 g/L of monobasic potassium phosphate. Add 1.2 mL of triethylamine, and adjust with Diluent to a pH of 3.0 ± 0.1.
Mobile phase:
Methanol, tert-butyl methyl ether, and Buffer (30:1:170)
Standard solution:
0.18 mg/mL of USP Oxycodone RS and 0.002 mg/mL of USP Oxycodone Related Compound B RS in Diluent. [NotePrepare fresh daily ] .
Sample stock solution:
Transfer 10 Tablets into a 500-mL volumetric flask, add 50 mL of Diluent and 50 mL of alcohol, and sonicate for 90 min to extract the active ingredient. Dilute with Diluent to volume.
Sample solution:
0.2 mg/mL of oxycodone hydrochloride from the Sample stock solution in Diluent. Pass a portion of the solution through a suitable filter, and use the filtrate.
Chromatographic system
Mode:
LC
Detector:
UV 230 nm
Column:
3.9-mm × 30-cm; 10-µm packing L1
Column temperature:
60
Flow rate:
1.0 mL/min
Injection size:
50 µL
System suitability
Sample:
Standard solution
Suitability requirements
Resolution:
NLT 4.5 between the oxycodone and oxycodone related compound B peaks
Relative standard deviation:
NMT 3.0% for oxycodone related compound B
Analysis
Samples:
Standard solution and Sample solution
Calculate the percentage of oxycodone related compound B in the portion of the Tablets taken:
Result = (rU/rS) × (CS/CU) × 100
Acceptance criteria:
NMT 1%
ADDITIONAL REQUIREMENTS
• Packaging and Storage:
Preserve in tight, light-resistant containers, and store at controlled room temperature.
• Labeling:
When more than one Dissolution Test is given, the labeling states the Dissolution Test used only if Test 1 is not used.
• USP Reference Standards 11
USP Oxycodone Related Compound B RS
4,5a-Epoxy-14-hydroxy-3-methoxy-17-methylmorphinan-6-one N-oxide. C18H21NO5 331.36
Auxiliary Information
Please check for your question in the FAQs before contacting USP.
USP35NF30 Page 4173
Pharmacopeial Forum: Volume No. 36(5) Page 1199
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