1 COMPATIBILITY OF SILDENAFIL CITRATE AND PHARMACEUTICAL EXCIPIENTS 1 BY THERMAL ANALYSIS AND LC-UV 2 3 4 Tamíris A. Júlio 1 , Igor F. Zâmara 1 , Jerusa S. Garcia 1 , Marcello G. Trevisan 1,2* 5 6 1 LACFar, Institute of Chemistry, Federal University of Alfenas – Unifal-MG, 37130-000, Alfenas, 7 Minas Gerais, Brazil. 8 2 National Institute of Science and Technology of Bioanalytical - INCTBio, State University of 9 Campinas, 13084-653, Campinas, São Paulo, Brazil. 10 11 12 13 14 15 16 17 18 19 20 21 22 *Corresponding author: Trevisan, Marcello G., LACFar, Institute of Chemistry, UNIFAL-MG, 23 37130-000, Alfenas, Minas Gerais, Brazil; Tel/Fax: +55 35 3299 1384. 24 E-mailing address: trevisan@unifal-mg.edu.br (M.G. Trevisan) 25 26 27