All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.
Abstract
Isolation and Characterization of Impurities Present in 8-Chlorotheophylline
Author(s): Sonal Desai, Archita Patel, SY Gabhe
A simple isocratic reversed phase high performance liquid chromatography was used to separate three impurities present in the sample of 8-chlorotheophylline. LC-MS was used for the characterization of impurities. Based on mass spectral data, the structures of these impurities were characterized as 3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione (impurity I), 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione (impurity II) and isomer of 8-chloro- 1,3-dimethyl-2,6(3H,1H)-purinedione (impurity III).
beautiful indian bhabhi fukad hard by devar, indonesia skandal seks boyolali, xxx indian porn role play sex video, mom sex, kerala sex videos com, live blue film
Full-Text | PDF
