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GC-ECD Determination of Lindane and Its Impurity alpha-HCH in Pharmaceutical Products
(Springer Heidelberg, Heidelberg, 2010)
A method was developed to determine lindane (gamma-HCH), the widely used organochlorine pesticide, and its impurity alpha-HCH in bulk and pharmaceutical products (shampoo, gel and emulsion). The system was able to successfully ...
Multi-Level Robustness Evaluation Approach: From Robustness Criterion to Adapted Algorithm of Dong
(Springer Heidelberg, Heidelberg, 2013)
This paper proposes an innovative concept for robustness evaluation guided by two crucial aims: indubitable identification of the factors that significantly affect the LC method and avoidance of unnecessary time and money ...
AQbD-Oriented Development of a New LC Method for Simultaneous Determination of Telmisartan and Its Impurities
(Springer Heidelberg, Heidelberg, 2017)
Analytical quality by design (AQbD)-oriented liquid chromatographic method development for determination of telmisartan and its impurities A, C, and 1 is determination is presented. Step-by-step process was conducted in ...
Determination of 8-hydroxyquinoline sulfate in tuberculin solutions by planar and high performance liquid chromatography
(Vieweg, Wiesbaden, 1997)
TLC and HPLC methods for the determination of the preservative, 8-hydroxyquinoline sulfate in PPD-T tuberculin solution were developed. The planar chromatography method involved separation of 8-hydroxyquinoline sulfate on ...
Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations
(Springer Heidelberg, Heidelberg, 2004)
An HPLC method was developed for the determination of S-carboxymethyl-L-cysteine, methylparaben and related compounds in cough syrup preparations. The HPLC operating conditions used were acetonitrile-methanol-water ...
Optimization of Artificial Neural Networks for Modeling of Atorvastatin and Its Impurities Retention in Micellar Liquid Chromatography
(Springer Heidelberg, Heidelberg, 2011)
Artificial Neural Networks (ANNs) present a powerful tool for the modeling of chromatographic retention. In this paper, the main objective was to use ANNs as a tool in modeling of atorvastatin and its impurities' retention ...
UPLC Method for Determination of Moxonidine and Its Degradation Products in Active Pharmaceutical Ingredient and Pharmaceutical Dosage Form
(Springer Heidelberg, Heidelberg, 2014)
A simple, rapid, isocratic, stability-indicating reverse phase ultra-performance liquid chromatographic (RP-UPLC) method was developed and validated for the routine analysis of moxonidine in the presence of its degradation ...
Validation of an HPLC method for the determination of valdecoxib and its degradation product: a mixture of alpha- and beta-n-lactosyl sulfonamide anomers
(Vieweg, Wiesbaden, 2007)
An HPLC method has been developed for the separation of valdecoxib and a degradation product consisting of alpha and beta-N-lactosyl sulfonamide, i.e. alpha and beta anomers (SC-77852). Best results were achieved with a ...
Determination of nisoldipine and its impurities in pharmaceuticals
(Springer Heidelberg, Heidelberg, 2004)
A method has been established for separation of nisoldipine and impurities, for example reactants, products of side-reactions, and photodegradation products, by HPTLC on LiChrospher Si 60 F-254s plates with detection at ...
Monitoring of Simvastatin impurities by HPLC with microemulsion eluents
(Springer Heidelberg, Heidelberg, 2006)
The use of microemulsions as eluents in HPLC has shown excellent potential. We have developed a novel approach for the analysis of Simvastatin and its six impurities, applying microemulsions as mobile phase. The method was ...