Research Article
Formulation and In Vitro Evaluation of Bilayer Tablets of Nebivolol Hydrochloride and Nateglinide for the Treatment of Diabetes and Hypertension
Table 9
Characteristic peak of Nateglinide pure drug and optimized formula.
| Functional groups | Reported value (cm−1) | Observed value (cm−1) Pure drug | Observed value (cm−1) Optimized formula |
| COOH | 3300–2500 | 3123.24 | 3126.84 | Carbonyls | 1760–1665 | 1690.97 | 1691.56 | Nitro compounds | 1550–1475 | 1487.80 | 1488.00 | Aliphatic amines | 1550–1475 | 1150.20 | 1150.63 |
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