Hydromorphone Hydrochloride Injection
» Hydromorphone Hydrochloride Injection is a sterile solution of Hydromorphone Hydrochloride in Water for Injection. It contains not less than 95.0 percent and not more than 105.0 percent of the labeled amount of hydromorphone hydrochloride (C17H19NO3·HCl).
Packaging and storage Preserve in single-dose or in multiple-dose containers, preferably of Type I glass, protected from light.
USP Reference standards 11
USP Endotoxin RS
Identification Place a volume of Injection, equivalent to about 10 mg of hydromorphone hydrochloride, in a separator. Extract with four 10-mL portions of chloroform, and discard the extracts. Add 1 mL of sodium carbonate TS, and extract with three 10-mL portions of chloroform. Filter the chloroform extracts into a glass-stoppered, 50-mL flask, and evaporate on a steam bath with the aid of a current of air to dryness. Dissolve the residue in 1 mL of chloroform: the IR absorption spectrum of the solution so obtained exhibits maxima only at the same wavelengths as that of a similar preparation of USP Hydromorphone Hydrochloride RS.
Bacterial endotoxins 85 It contains not more than 88.0 USP Endotoxin Units per mg of hydromorphone hydrochloride.
pH 791: between 3.5 and 5.5.
Other requirements It meets the requirements under Injections 1.
Standard preparation Using an accurately weighed quantity of USP Hydromorphone Hydrochloride RS, prepare a solution in water having a known concentration of about 0.2 mg per mL.
Assay preparation Quantitatively dilute an accurately measured volume of Injection, if necessary, with water to obtain a solution containing about 0.2 mg per mL.
Procedure Transfer 20.0 mL each of the Standard preparation and the Assay preparation to separate 50-mL volumetric flasks. To each flask add, with mixing, 1.0 mL of hydrochloric acid and 1.0 mL of sodium nitrite solution (1 in 20). Insert the stoppers, allow to stand for 40 to 45 minutes, with occasional swirling, then add 2 mL of ammonium hydroxide, and mix. Allow to stand for 2 minutes, then dilute with water to volume, and mix. Concomitantly determine the absorbances of the solutions in 1-cm cells at the wavelength of maximum absorbance at about 440 nm, with a suitable spectrophotometer, using water as the blank. Calculate the quantity, in mg, of hydromorphone hydrochloride (C17H19NO3·HCl) in each mL of the Injection taken by the formula:
(VA / VI)(C)(AU / AS)in which VA is the volume, in mL, of the Assay preparation; VI is the volume, in mL, of Injection taken to prepare the Assay preparation; C is the concentration, in mg per mL, of USP Hydromorphone Hydrochloride RS in the Standard preparation; and AU and AS are the absorbances of the solutions from the Assay preparation and the Standard preparation, respectively.
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USP35NF30 Page 3448