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Table 2 Relevant bands of GLZ–DNS, GLZ–PDA, and GLZ–LPN in FTIR spectroscopy

From: Cocrystallization of gliclazide with improved physicochemical properties

  GLZ DNS GLZ–DNS PDA GLZ–PDA LPN GLZ–LPN
NH 3268.17 - 2925.04 - 3176.19 3174.10 2934.77
OH - 2966.12,
3460. 43
2858.56,
3439.26
3054.21, 2832.07, 2947.24,
2280.41
3294.99 2868.44,
2836.59
Ar–CH 3117.13 3107.52 3090.07 3107.52 3113. 41 - -
C=O 1703.91 1675.32 1613.55 1690.28 1599.62 - 1607.45
S=O 1354.02 - 1312.07 - 1176.28 - 1299.48
NO2 - 1350.52 1152.32 - - - -
C=C 1607.22 1608.28 1400.87 1400.87 1432.90 - -
C=N - - - 1690.28 - - -
  1. Note: GLZ gliclazide, DNS 3,5-dinitrosalicylic acid, PDA 2,6-pyridinedicarboxylic acid, LPN L-proline