**3.1 Organoleptic properties**

Organoleptic properties of new chemical entity preformulation start with a detailed description of drug substances' organoleptic properties including colour, odour, flavour, texture, and taste and these properties should be recorded at the


*Preformulation Studies: A Versatile Tool in Formulation Design DOI: http://dx.doi.org/10.5772/intechopen.110346*

#### **Table 1.**

*List of drug product development challenges and strategies to overcome the challenges.*

preformulation stage and also described using expressive terminology. These properties vary as vendor changes and hence they are evaluated with reference standards to confirm the API purity. Further, once these organoleptic properties are established, they may analyse for batch-to-batch consistency mentioned in **Table 2** [14, 20].
