Identification and characterization of forced degradation products of paliperidone using LC–APCI–Ion Trap–MS

2013 ◽  
Vol 6 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Sanjay D. Sawant ◽  
Vijaya U. Barge
2020 ◽  
Vol 26 (6) ◽  
pp. 425-431
Author(s):  
Naga Veera Yerra ◽  
S Babu Dadinaboyina ◽  
LSSN Vigjna Abbaraju ◽  
MVN Kumar Talluri ◽  
Jagadeshwar Reddy Thota

Indacaterol (IND), 5-[2-[(5,6-Diethyl-2,3-dihydro-1H-inden-2-yl)amino]-1-hydroxyethyl]-8-hydroxyquinolin-2(1H)-one, is an active pharmaceutical ingredient (API) which is used to treat chronic obstructive pulmonary disease (COPD). We followed the International Council for Harmonization (ICH) guide lines to study the degradation behavior of IND under various stress conditions. Stressed degradation of the drug was performed under hydrolytic (alkaline, acidic and neutral), photolytic, oxidative and thermal conditions. Identification and characterization of IND and its forced degradation products (DPs) were demonstrated by using LC-HRMS and MS/MS method. A total of three DPs (DP1-DP3) were identified and characterized. The IND was found to be stable under photolytic, oxidative and thermal conditions, whereas it produced three DPs in acidic, basic and neutral hydrolytic stress conditions.


2018 ◽  
Vol 07 (03) ◽  
Author(s):  
Rajesh Babu KB ◽  
Nagaraju P ◽  
Rajendra ◽  
Gowri Sankar D ◽  
Seshagiri Rao JVLN ◽  
...  

2020 ◽  
Vol 188 ◽  
pp. 113442
Author(s):  
Nagarjuna Chary Ragi ◽  
Ganga Reddy Velma ◽  
Pavan Kumar Pallerla ◽  
Sana Siddiqua ◽  
Veeresham Alugonda ◽  
...  

2020 ◽  
Vol 16 (8) ◽  
pp. 1130-1139
Author(s):  
Singaram Sathiyanarayanan ◽  
Chidambaram Subramanian Venkatesan ◽  
Senthamaraikannan Kabilan

Background: Regadenoson is an A2A adenosine receptor agonist that is a coronary vasodilator and commonly used as a pharmacologic cardiac stressing agents. Methods: HPLC method was used for the analysis of related substances. The degraded impurities during the process were isolated and characterized by IR, Mass and NMR spectral analysis. Results: Forced degradation study of regadenoson under conditions of hydrolysis (neutral, acidic and alkaline) and oxidations suggested in the ICH Q1A(R2) was accomplished. The drug showed significant degradation under all the above conditions. On the whole, five novel degradation products were found under diverse conditions along with process related impurities which were not reported earlier. Conclusion: All the degradation products were well characterized by using advanced spectroscopic techniques like IR, 1H NMR, 13C NMR and Mass spectra. The identification of these impurities will be productive for the quality control during the production and stability behavior of the regadenoson drug substance.


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