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Table 4 FT-IR result [23]

From: Development and characterization of solid dispersion-based orodispersible tablets of cilnidipine

S. no.

Functional group

Reported frequency (cm−1)

Frequency of drug (cm−1)

Frequency of SD (cm−1)

Frequency of drug and excipients (cm−1)

1

C–N aromatic 2° amine

1020–1250

1119.71

1103.32

1104.28

2

N–O

1360–1550

1389.76

1380.11

1373.36

3

C=O

1630–1980

1752.42

1746.60

1635.69

4

–OCH3

2815–2950

2929.97

2923.22

2917.43

5

C–O

1200–1225

1225.80

1232.55

1249.91

6

N–H Aromatic 2° amine

3250–3500

3464.27

3396.76

3416.05

  1. SD solid dispersion