Powder patterns of the 1:1 cocrystal prepared by solvent crystallization in acetone and the 2:1 cocrystal obtained by acetone drop grinding are shown in Figure 1. They are compared with the XRPD of the starting materials and the calculated 1:1 XRPD. The XRPD of our 2:1 material is identical with that of Trask et al., see ref 19, Figure 6b. These data confirm that we were able to prepare the known cocrystal forms using a combination of solution mediated and grinding methodologies with acetone as a solvent.