Albiñana, C. Berenguer; Hayward, J. J.; Hudlicky, T.; Machara, A. Reinvestigation of acetylation of 3,4-dihydroxybenzaldehyde and reconciliation of previously reported analytical data. Tetrahedron Letters 2016, 57 (9), 1019-1021 DOI: 10.1016/j.tetlet.2016.01.075.