Quality Control of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochlorideOn November 30, 2019 ,《Characterization of crosslinked hard gelatin capsules for a structural assembly of elementary osmotic pump delivery system》 appeared in Journal of Pharmaceutical Investigation. The author of the article were Monton, Chaowalit; Kulvanich, Poj. The article conveys some information:
The objective of this study was to characterize the crosslinked hard gelatin capsules (HGCs) for use as a structural assembly of elementary osmotic pumps (EOP). HGCs were crosslinked in formaldehyde vapor for 6, 12, and 24 h. Weight loss after immersing in various mediums, water soluble protein fraction, loss on drying, and formaldehyde residue were investigated. Fourier transform IR (FTIR) spectra were used to detect the crosslinking formation. The EOP capsules were prepared for delivery of diltiazem hydrochloride (DIL HCl) and ambroxol hydrochloride (AMB HCl), which are freely and sparingly water soluble drugs, resp. Physicochem. stability of storage crosslinked HGC shells was investigated. All crosslinked HGC shells were water insoluble FTIR spectra exhibited intermediate lysine methylol and arginine methylol peaks. Storage time increased, moisture content increased and formaldehyde residue decreased. The developing EOP capsules were more appropriate for delivery of high water soluble rather than low water soluble drug. EOP capsule contained 100 mg DIL HCl using HGCs crosslinked for 12 h provided release profiles for 12 h with a lag time of 2.6-3.1 h. It was also found that DIL HCl EOP capsules prepared using crosslinked HGC shells stored for 90 days maintained the similar drug release profiles. AMB HCl EOP capsules exhibited low drug release. In summary, the crosslinked HGCs were applicable as a structural assembly of the osmotic controlled drug delivery system. In the experiment, the researchers used trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride(cas: 23828-92-4Quality Control of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride)
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