**2. Materials and Methods**

#### 2.2.3. Differential Scanning Calorimetry (DSC) Measurements *2.1. Materials*

For the purpose of this study, venetoclax was obtained from MSN Laboratories (Hyderabad, India). Acetonitrile (ACN) was purchased from J. T. Baker, now part of Avantor® (Radnor, PA, USA). FTIR grade potassium bromide (KBr) and analytical grade ammonium bicarbonate were purchased from Merck KGaA (Darmstadt, Germany).
