Skip to main content
. Author manuscript; available in PMC: 2014 Nov 21.
Published in final edited form as: J Pharm Sci. 2010 Jun;99(6):2672–2680. doi: 10.1002/jps.22017

Table 3.

Determination of the Concentration of Hydromorphone in Ammonium Sulfate at pH 5.5

Sample Peak Area
Sample 1 Sample 2 Sample 3 Average
0.05 mg/mL 6.37 6.3534 ND 6.3617
0.1 mg/mL 12.43 11.91 ND 12.17
0.5 mg/mL 57.6 57.9 ND 57.75
Unknown 7.733 7.734 7.334 7.600

Thirty milligrams of hydromorphone hydrochloride was suspended in 0.5mL 120mM ammonium sulfate, pH 5.5, sedimented, diluted 1000-fold, and measured using HPLC.

The concentration was found to be 60.43 mg/mL.