Study on Mixed Solvency Concept in Formulation Development of Aqueous Injection of Poorly Water Soluble Drug

Table 5

Characteristic infrared absorptions of functional groups.

Range cm^−1		Functional group
Drug	Drug with solubilizers
3019.98, 3000.69	3019.98, 3000.69	Aromatic C–H stretching
1800–2400	1800–2400	Aromatic overtone
1600–1650	1600–1650	Ketonic group
1580–1600	1580–1600	C–C multiple bond str. (aromatic)
1725–1700	1725–1700	Saturated acid (aliphatic)
600	600	C–S str.
2500–3200	2500–3200	–OH of acid