Doxycycline EP Impurity A

Rapid liquid chromatographic method for the control of doxycycline and tiamulin residues and their metabolites in vivo assays with pigs: Treatment and depletion
By Cambeiro-Perez, Noelia; Gonzalez-Gomez, Xiana; Rey-Salgueiro, Ledicia; Simal-Gandara, Jesus; Martinez-Carballo, Elena
From Journal of Pharmaceutical and Biomedical Analysis (2020), 190, 113428
 
New HPLC-​MS method for rapid and simultaneous quantification of doxycycline, diethylcarbamazine and albendazole metabolites in rat plasma and organs after concomitant oral administration
By Permana, Andi Dian; Tekko, Ismaiel A.; McCarthy, Helen O.; Donnelly, Ryan F.
From Journal of Pharmaceutical and Biomedical Analysis (2019), 170, 243-253

Doxycycline EP Impurity A is chemically (4S,4aR,5S,5aR,6S,12aS)-4-(Dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide. It is also known as Doxycycline USP Related Compound A ; 6-Epidoxycycline. Doxycycline EP Impurity A is supplied with detailed characterization data compliant with regulatory guideline. Doxycycline EP Impurity A can be used for the analytical method development, method validation (AMV), Quality Controlled (QC) application for Abbreviated New Drug Application (ANDA) or during commercial production of Doxycycline.

The product can be used as reference standards and further traceability against pharmacopeial standards (USP or EP) can be provided based on feasibility. SynZeal products are for analytical purpose only and not for human use.