medium intensity band at 1780-1650 cm⁻¹ for C=N bond stretching

a strong and broad band found at 3500-3300 cm⁻¹ for O-H bond stretching and a strong intensity band found at 2980-2890 cm⁻¹ for C(sp³)-H bond stretching

medium intensity band at 2260-2220 cm⁻¹ for C≡N bond stretching

a strong and broad band found at 3650-3200 cm⁻¹ for O-H bond stretching and a medium intensity band found at 2980-2890 cm⁻¹ for C(sp³)-H bond stretching

medium intensity band at 1650-1550 cm⁻¹ for C=N bond stretching

a strong and broad band found at 3650-3200 cm⁻¹ for O-H bond stretching and a medium intensity band found at 2260-2100 cm⁻¹ for C(sp³)-H bond stretching

medium intensity band at 1650-1550 cm⁻¹ for C=N bond stretching

a strong and broad band found at 1780-1650 cm⁻¹ for C-O bond stretching and a medium intensity band found at 2260-2100 cm⁻¹ for C(sp³)-H bond stretching