EXTRACTION AND IDENTIFICATION THE ASPIRIN FROM SOME PHARMACEUTICAL PRODUCTS BY USING I.R SPECTRA AND MELTING POINT METHODS . EPH-International Journal of Applied Science, [S. l.], v. 2, n. 3, p. 22–27, 2016. DOI: 10.53555/eijas.v2i3.138. Disponível em: http://eijas.com/index.php/as/article/view/138. Acesso em: 30 oct. 2025.