Abstract:
:A new method for determining a quaternary mixture of vitamins B6, B1, and B12 and uridine 5'-triphosphate (UPT) using second-derivative spectrophotometry is described. Calibration graphs were linear up to 30 micrograms/mL of vitamin B6 at 307 nm (r = 0.9999) and vitamin B1 at 282.7 nm (r = 0.9997) and up to 35 micrograms/mL of vitamin B12 at 360.5-374 nm, peak-to-peak (r = 0.9999), and UTP at 261 nm (r = 1.0000). Detection limits at the p = 0.05 level of significance were calculated to be 0.20, 0.46, 0.22, and 0.20 microgram/mL for vitamins B6, B1, and B12 and UTP, respectively. An exhaustive statistical analysis of the experimental data was performed to confirm the validity of the method. The procedure does not require any separation step or solving of equations. The method was successfully applied for determining synthetic mixtures and commercial injections for these drugs.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Morelli Bdoi
10.1002/jps.2600840109subject
Has Abstractpub_date
1995-01-01 00:00:00pages
34-7issue
1eissn
0022-3549issn
1520-6017pii
S0022-3549(15)49683-2journal_volume
84pub_type
杂志文章abstract::Responses from the second Product Quality Research Institute (PQRI) Blend Uniformity Working Group (BUWG) survey of industry have been reanalyzed to identify potential links between formulation and processing variables and the measured uniformity of blends and unit dosage forms. As expected, the variability of the ble...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23426
更新日期:2013-03-01 00:00:00
abstract::Nanocrystals have emerged as a potential formulation strategy to eliminate the bioavailability-related problems by enhancing the initial dissolution rate and moderately super-saturating the thermodynamic solubility. This review contains an in-depth knowledge of, the processing method for formulation, an accurate quant...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章,评审
doi:10.1002/jps.24694
更新日期:2016-01-01 00:00:00
abstract::Male fertility has reportedly been regulated by the long-term, continuous administration of testosterone. To deliver the testosterone at a controlled rate for a month or longer, a bandage-type, testosterone-releasing, disk-shaped device was developed. In vitro drug elution studies demonstrated that a constant release ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600730811
更新日期:1984-08-01 00:00:00
abstract::The quantitative determinations of phenol in phenolated calamine lotion USP and of phenol and resorcinol in phenol-resorcinol-boric acid solution by high-pressure liquid chromatography are reported. The procedures are simple, rapid (no special preliminary treatment is required), and accurate. There is no interference ...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.2600651139
更新日期:1976-11-01 00:00:00
abstract::Taxanes such as paclitaxel (Taxol) and docetaxel (Taxotere) are promising agents for use against ovarian cancer and other malignancies. Recently, SB-T-1011, a semisynthetic taxane, has been prepared from 14-hydroxy-10-deacetylbaccatin III. SB-T-1011 shows similar or greater in vitro cytostatic activity than paclitaxel...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600841204
更新日期:1995-12-01 00:00:00
abstract::Dogs were used to examine the effect of elevated gastric pH on the absorption of controlled-released theophylline dosage forms with pH-dependent dissolution. In vitro studies showed that a controlled-release theophylline tablet dissolved more rapidly if it was initially exposed to an acidic media. In contrast, a contr...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.2600770908
更新日期:1988-09-01 00:00:00
abstract::Approximately 30% of active pharmaceutical ingredients (APIs) experience agglomeration, granulation, and breakage during agitated drying. Currently, there is no small-scale bench tool to help assess and observe granulation behavior of APIs in the laboratory and subsequently lead to the development of a robust drying m...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23762
更新日期:2014-01-01 00:00:00
abstract::A series of substituted 3-(benzylideneamino) coumarins was synthesized and evaluated for anti-inflammatory activity against carrageenan-induced edema in rats. Halogenated derivatives 4g and 4c, at oral doses of 100 mg/kg, showed 75 and 60% antiedmatous activity, respectively (phenylbutazone antiedematous activity, 58%...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.2600810926
更新日期:1992-09-01 00:00:00
abstract::The release kinetics of a polymeric-controlled release device are determined by its geometry and dimensions. A method to calculate the required size and shape of diffusion-controlled dosage forms to achieve a particular release profile is presented. The diffusion parameters are determined for various drugs (theophylli...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js980006a
更新日期:1998-07-01 00:00:00
abstract::Sugars and polyols have been used routinely with lyophilized proteins and peptides as bulking agents, cryoprotectants, and lyoprotectants. However, reducing sugars may present a problem as excipients since they are potentially reactive with proteins. In this stability study of recombinant human relaxin (Rix) with vari...
journal_title:Journal of pharmaceutical sciences
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doi:10.1021/js950456s
更新日期:1996-08-01 00:00:00
abstract::Synthetic peptides corresponding to the variable tandem repeat domain of the cancer-associated antigen MUC1 mucin are candidates for cancer vaccines. In our investigation mice were immunized via subcutaneous injection with poly(d,l-lactic-co-glycolic acid) (PLGA) microspheres containing a MUC1 mucin peptide. It was hy...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js980070s
更新日期:1998-11-01 00:00:00
abstract::A high-performance liquid chromatographic method using a linear elution gradient has been developed for the analysis of sulindac, sulindac sulfone, and sulindac sulfide in plasma, urine, bile, and gastric fluid. The methodology uses reverse-phase, radial compression chromatography with gradient elution, and UV detecti...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600730921
更新日期:1984-09-01 00:00:00
abstract::The entropy of fusion of 84 disubstituted benzenes was essentially constant and independent of the participation of the compounds in intramolecular or intermolecular hydrogen bonding. It was also independent of the shapes, sizes, and dipole moments of the rigid molecules studied. While the entropy of fusion was indepe...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600680512
更新日期:1979-05-01 00:00:00
abstract::The influence of hepatic uptake and efflux, which includes passive diffusion and transporter-mediated component, on drug distribution volumes [steady-state volume of distribution (V(ss)) and terminal volume of distribution (V(β))], mean residence time (MRT), clearance, and terminal half-life is considered using a simp...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.22696
更新日期:2011-11-01 00:00:00
abstract::Two polymorphs of celastrol were discovered and fully characterized by X-ray powder diffraction, thermogravimetry analysis, and differential scanning calorimetry. The single-crystal structures of form I and the isostructural solvate of form II were disclosed by single-crystal X-ray diffraction. The apparent solubility...
journal_title:Journal of pharmaceutical sciences
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doi:10.1016/j.xphs.2018.07.008
更新日期:2018-11-01 00:00:00
abstract::The synthesis, local anesthetic and antiarrhythmic properties, and CNS toxicity of 14 2-(3-alkylaminoalkylamido)-pyrroles are described. Most of the compounds exhibited local anesthetic activity by the guinea pig wheal test, with seven showing comparable or greater activity than lidocaine. Most compounds also exhibite...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600700519
更新日期:1981-05-01 00:00:00
abstract::The major route of degradation of tetrazepam (1) is oxidation to 7-chloro-5-(3-keto-cyclohexen-1-yl)-1,3-dihydro-1-methyl-2H-1, 4-benzodiazepin-2-one (3) via the stable 7-chloro-5-(3-hydroperoxy-cyclohexen-1-yl)-1,3-dihydro-1-methyl-2H -1, 4 benzodiazepin-2-one (2). Minor degradation products are 7-chloro-5-(1,2-epoxy...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600810216
更新日期:1992-02-01 00:00:00
abstract::The biological activity of a series of 10 silver sulfanilamides is studied in relation to the physical parameters pK alpha, log K, and the aqueous solubility. None of the parameters demonstrate a simple relationship with the activity. A discussion of the significance of log K and the solubility in relation to the acti...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600730138
更新日期:1984-01-01 00:00:00
abstract::The application of drug ion-selective electrodes as sensors for the direct determination of the released drug in a continuous-flow analyzer for automated dissolution studies is described. Flow-through electrodes, selective to chlorpromazine, amitriptyline, propantheline, cimetidine, and ranitidine, have been construct...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.2600760911
更新日期:1987-09-01 00:00:00
abstract::Flexible manufacturing technologies for solid oral dosage forms with a continuous adjustability of the manufactured dose strength are of interest for applications in personalized medicine. This study explored the feasibility of using microvalve technology for the manufacturing of different solid oral dosage form conce...
journal_title:Journal of pharmaceutical sciences
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abstract::Ketoconazole and posaconazole are both Biopharmaceutics Classification System class 2 drugs (highly permeable, poorly soluble), are structurally similar, and are administered at the same doses. Nevertheless, the duodenal concentration profile and the magnitude of the positive food effect observed for these 2 drugs are...
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abstract::This work investigates the use of spray freeze-drying (SFD) to produce protein loaded particles suitable for epidermal delivery. In the first part of the study, the effects of formulation and process conditions on particle properties are examined. Aqueous solutions of trehalose produce SFD particles in the size range ...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.10204
更新日期:2002-10-01 00:00:00
abstract::Cosalane is a potent inhibitor of HIV replication with multiple sites of action. The purposes of this study were to (a) determine the extent and nature of cosalane binding to mucin, alpha(1)-acid glycoprotein (AAG), plasma, and human (HSA) and bovine serum (BSA) albumin, and (b) determine the primary site(s) of cosala...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/1520-6017(200105)90:5<659::aid-jps1022>3.0
更新日期:2001-05-01 00:00:00
abstract::Solid dispersion (SD) of indomethacin with crospovidone (CrosPVP) shows useful characteristics for preparation of dosage forms. This study aimed to determine the types of drugs that could adopt a stable amorphous form in SD. Twenty compounds with various melting points (70-218 degrees C), molecular weights (135-504) a...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
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更新日期:2007-06-01 00:00:00
abstract::Recent oxidation events on monoclonal antibody candidates prompted us to investigate the mechanism of oxidation of Met, Trp, and His residues and to search for suitable stabilizers. By using parathyroid hormone (1-34), PTH, as a model protein and various oxidants, aided by liquid chromatography, peptide mapping, and m...
journal_title:Journal of pharmaceutical sciences
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doi:10.1002/jps.21746
更新日期:2009-12-01 00:00:00
abstract::A model based on heat transport control was developed to describe the uptake of water on a deliquescent solid in an atmosphere of pure water vapor. The model assumes the presence of a saturated liquid film on the surface of the solid. The decrease in the vapor pressure of water over the surface, brought about by the c...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600721204
更新日期:1983-12-01 00:00:00
abstract::Understanding the coating unit operation is imperative to improve product quality and reduce output risks for coated solid dosage forms. Three batches of sustained-release tablets coated with the same process parameters (pan speed, spray rate, etc.) were subjected to terahertz pulsed imaging (TPI) analysis followed by...
journal_title:Journal of pharmaceutical sciences
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更新日期:2009-12-01 00:00:00
abstract::Respirable crystals of cromoglycic acid (CA) were prepared by precipitation of CA with hydrochloric acid from aqueous solutions of cromolyn sodium and subsequent recrystallization from hot water or mixtures of dimethyl sulphoxide and water. The properties of the materials were established by melting point measurements...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600780221
更新日期:1989-02-01 00:00:00
abstract::A tetrazole ring is often used in drug discovery as a replacement for the carboxylic acid group. Previous work indicates that compounds containing a tetrazole moiety show asymmetric permeability in Caco-2 cells characteristic of an efflux transporter substrate. The aim of this study is to determine which transporters ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.20526
更新日期:2006-04-01 00:00:00
abstract::The pharmaceutical industry has large investments in compound library enrichment, high throughput biological screening, and biopharmaceutical (ADME) screening. As the number of compounds submitted for in vitro ADME screens increases, data analysis, interpretation, and reporting will become rate limiting in providing A...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.20020
更新日期:2004-05-01 00:00:00