*2.2. Preparation of Multicomponent Crystals*

**ARI-SAL salt.** The equimolar amounts of ARI (224.2 mg, 0.5 mmol) and SAL (69.1 mg, 0.5 mmol) were dissolved in 30 mL of acetonitrile-water mixed solvent (*v*/*v*, 1:1) at 60 ◦C. The resulting solution was filtered and then kept for eight days at 35 ◦C. White block crystals were obtained. The bulk samples were prepared by slurry method. A mixture of ARI (448 mg, 1 mmol) and SAL (138 mg, 1 mmol) was added to 6 mL of acetonitrile-water mixed solvent (*v*/*v*, 1:1) and stirred for 12 h at a speed of 350 rpm. The solid obtained by filtering the solution was dried to a constant weight in a vacuum oven at 30 ◦C.

**ARI-ADI salt acetone hemisolvate.** The mixture of ARI (224.2 mg, 0.5 mmol) and ADI (36.5 mg, 0.25 mmol) was dissolved in 20 mL of acetone at 60 ◦C. The resulting solution was filtered and then kept for four days at 35 ◦C. White block crystals were obtained. The bulk samples were prepared by slurry method. A mixture of ARI (448 mg, 1 mmol) and ADI (73 mg, 0.5 mmol) was added into 6 mL of acetone solution and stirred for 12 h at a speed of 350 rpm. The solid obtained by filtering the solution was dried to a constant weight in a vacuum oven at 30 ◦C.

**Additionally, ARI-ADI salt** was obtained by drying ARI-ADI salt acetone hemisolvate in a vacuum oven at 70 ◦C for 2 h.
