Research Article
Formulation and In Vitro Evaluation of Bilayer Tablets of Nebivolol Hydrochloride and Nateglinide for the Treatment of Diabetes and Hypertension
Table 8
Characteristic peak of Nebivolol 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 | 3195.59 | 3196.12 | Nitro compounds | 1550–1475 | 1493.30 | 1493.05 | Alkyl halides | 1300–1150 | 1214.62 | 1215.17 | Aliphatic amines | 1250–1020 | 1074.87 | 1074.47 |
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