electronic reprint ISSN: 2056-9890 journals.iucr.org/e Crystal structure of 2-acetyl-5-(3,4-dimethoxyphenyl)-6-eth- oxycarbonyl-3,7-dimethyl-5H -thiazolo[3,2-a ]pyrimidin-8-ium chloride N. L. Prasad, M. S. Krishnamurthy and Noor Shahina Begum Acta Cryst. (2015). E71, o764–o765 IUCr Journals CRYSTALLOGRAPHY JOURNALS ONLINE This open-access article is distributed under the terms of the Creative Commons Attribution Licence http://creativecommons.org/licenses/by/2.0/uk/legalcode , which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. Acta Cryst. (2015). E71, o764–o765 Prasad et al. · C 21 H 25 N 2 O 5 S + ·Cl -