Identification, method development, validation, and characterization of Aza sugars by an ion-chromatography, high-resolution mass spectrometer, and LC-MS/MS

被引:5
|
作者
Rajana, Nagaraju [1 ]
Madhavan, P. [1 ]
Babu, J. Moses [1 ]
Deore, Balasaheb B. [1 ]
Basavaiah, K. [2 ]
Devi, Dharamasoth Rama [3 ]
机构
[1] Dr Reddys Labs, Analyt Res & Dev, Hyderabad 500049, Telangana, India
[2] Andhra Univ, Dept Inorgan & Analyt Chem, Visakhapatnam 530003, Andhra Pradesh, India
[3] Andhra Univ, Coll Pharmaceut Sci, Visakhapatnam 530003, Andhra Pradesh, India
关键词
RP-HPLC; MIGLITOL; CASTANOSPERMINE; INHIBITOR;
D O I
10.1186/s40543-018-0138-0
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Background: Aza sugars are organi c sugars having nitrogen containing polyhydroxyl sugar molecules. These molecules are active pharmaceutical ingredients; these are not well separated and eluted early in the HPLC and UPLC columns due to high polar nature. Aza sugars are having high conductivity hence the ion chromatography validated method has been established for the castanospermin and celgosivir along with its degradation studies (impurities). Methods: An ion chromatography with conductivity detector-cation column was used to determine the assay of castanospermin and celgosivir as in the form of bulk active pharmaceutical ingredients. The degradation impurities were identified and characterized by using the UPLC-TOF and the LCMS/MS techniques. Results: An ion chromatography method was developed and determined the assay for castanospermin and celgosivir as in the form of bulk active pharmaceutical ingredients with the specificity of the miglitol and 1-deoxynojirimycin. Validation was performed for assay of the castanospermin and celgosivir. The method precision %RSD results at 0.25 mg/mL concentration of castanospermin and celgosivir were 1.1 and 0.7 respectively. The linearity was performed from 25 to 200% (w.r.t 0.25 mg/mL); the results were 1.000 and 0.999 coefficient for the castanospermin and celgosivir respectively. The recovery studies, robustness, ruggedness, and solution stability results were within the acceptance limits of the ICHQ2 (R1) guidelines. The stress study for the castanospermin and celgosivir active pharmaceutical ingredients was performed by using 0.5N HCl solution, 0.5N NaOH solution, 3.0% H202 solution, UV-visible and the thermal conditions. The castanospermin was degraded as 20.8% of n-oxide impurity, and celgosivir was degraded as 10.0% n-oxide impurity under 3.0% H202 solution. In base degradation, the celgosivir was back converted completely to castanospermin. These n-oxide impurities were identified and characterized by using UPLC-TOF and LCMS/MS techniques after collection from the ion chromatography. Castanospermin and celgosivir are stable in remaining stress conditions. Conclusions: From the present study, it was found that robust analytical ion chromatography technique is used for the determination of assay in Aza sugar, especially assay for the castanospermin and celgosivir with minimum usage of test sample 0.25 mg/mL and used green chemistry solvents. The study also explains that the unique degradation of castanospermin and celgosivir under oxidative and base hydrolysis, Oxidative degradation impurities were identified and characterized as n-oxides of its respective castanospermin and celgosivir active pharmaceutical ingredients by using HRMS and LC-MS/MS.
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页数:16
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