Assay
Diluting solvent,Mobile phase,Standard preparation,Resolution solution,and Chromatographic system
Prepare as directed in the
Assay under
Tetracycline Hydrochloride.
Assay preparation
Transfer an accurately measured volume of Oral Suspension,equivalent to about 125mg of tetracycline hydrochloride,to a 250-mLvolumetric flask,add 200mLofDiluting solvent,and shake.AddDiluting solvent to volume,mix,and filter.
Procedure
Proceed as directed in the
Assay under
Tetracycline Hydrochloride.Calculate the quantity,in mg per mL,of tetracycline hydrochloride (C
22H
24N
2O
8·HCl)in the Oral Suspension taken by the formula:
(CP/4V)(rU/rS),
in which
Vis the volume,in mL,of Oral Suspension taken;and the other terms are as defined therein.