1. Aim or purpose Crystals of betulinic acid (BA) obtained in a recrystallization method from ethanol, isopropyl alcohol and 2-butanol from 1:1 solutions were characterised theoretically and experimentally by using FT-IR and FT-Raman spectroscopy, in conjunction with scanning electron microscopy (SEM) and X-ray powder diffraction (XRPD). 2. Materials and methods Analytical purity of BA and
Original Study Abstracts 1. Aim or purpose A new type of crystals of betulinic acid + vitamin C in isopropyl alcohol/ methanol / ethanol monosolvate (BA_VitC IPA/MeOH /EtOH) was obtained in a hydrothermal experiment, with superior antitumoral activity on various cell lines. 2. Materials and methods Materials All reagents used in the assay procedures were