Dissolution 711
TEST 1
Medium:
0.07 N hydrochloric acid; 900 mL.
Apparatus 2:
55 rpm.
Times:
15 and 45 minutes.
Procedure
Determine the amount of cefuroxime (C
16H
16N
4O
8S) dissolved by employing UV absorption at the wavelength of maximum absorbance at about 278 nm on filtered portions of the solution under test, suitably diluted with
Dissolution Medium, if necessary, in comparison with a Standard solution having a known concentration of
USP Cefuroxime Axetil RS, equivalent to about 0.01 to 0.02 mg of cefuroxime (C
16H
16N
4O
8S) per mL, in the same
Medium.
Tolerances
Not less than 60% (Q) of the labeled amount of C16H16N4O8S is dissolved in 15 minutes, and not less than 75% (Q) is dissolved in 45 minutes; except that where Tablets are labeled to contain the equivalent of 500 mg of cefuroxime, not less than 50% (Q) of the labeled amount of C16H16N4O8S is dissolved in 15 minutes, and not less than 70% (Q) is dissolved in 45 minutes.
TEST 2
If the product complies with this test, the labeling indicates that it meets USP
Dissolution Test 2.
Apparatus 2:
100 rpm.
Medium, Times, and Procedure
Proceed as directed under Test 1.
Tolerances
Not less than 60% (Q) of the labeled amount of C16H16N4O8S is dissolved in 15 minutes, and not less than 75% (Q) of the labeled amount of C16H16N4O8S is dissolved in 45 minutes.
Assay
0.2 M Monobasic ammonium phosphate, Mobile phase, Internal standard solution, Resolution solution, Standard preparation, and Chromatographic system
Proceed as directed in the
Assay under
Cefuroxime Axetil.
Assay preparation
Finely powder not fewer than 10 Tablets, accurately counted. Transfer the powder, with the aid of methanol, to a volumetric flask of such capacity that when filled to volume, the solution will contain the equivalent of about 2 mg of cefuroxime (C16H16N4O8S) per mL. Add methanol to fill the volumetric flask to about half of its capacity, and shake by mechanical means for about 10 minutes. Dilute with methanol to volume, and mix. Filter a portion of this stock mixture, and transfer 5.0 mL of the filtrate to a 50-mL volumetric flask. Add 5.0 mL of Internal standard solution and 8.8 mL of methanol, dilute with 0.2 M Monobasic ammonium phosphate to volume, and mix. [NOTEUse this Assay preparation promptly, or refrigerate and use on the day prepared.]
Procedure
Proceed as directed in the
Assay under
Cefuroxime Axetil. Calculate the quantity, in mg, of cefuroxime (C
16H
16N
4O
8S) in each Tablet taken by the formula:
(V/12,500N)(PSWS /100)(100 K)(RU / RS),
in which
V is the volume, in mL, of the volumetric flask used to prepare the stock mixture;
N is the number of Tablets taken; and the other terms are as defined therein.