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Journal of Pharmaceutics
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2013
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Article
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Tab 5
Research Article
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