Table 2 FTIR analysis of anti-malarial active extract of Andrographis paniculata
From: Diterpenoids as potential anti-malarial compounds from Andrographis paniculata
Wavenumber (Cm−1) | Functional group | Class/bond | Intensity |
|---|---|---|---|
3436.0894 | –OH– broad | Hydroxyl | Medium |
3079.7370 | –C–H– stretch | Aromatic | Strong |
2917.4682 | –CH– stretch | Alkanes | Strong |
2848.9200 | –CH2– | Alkanes | Medium |
1738.9023 | –C=O– stretch | Esters | Strong |
1643.9741 | –C=C– stretch (3-ring structure) | Alkanes | Weak |
1616.5713 | –C=C– stretch (5-ring structure) | Alkanes | Weak |
1497.4885 | –C–C– stretch | Aromatic | Weak |
1450.7719 | –CH2 and CH3– | Alkanes | Medium |
1376.2922 | –CH3– | Alkanes | Weak |
1346.5665 | N–O–Aromatic Nitro. | Aromatic Nitro | Weak |
1214.3886 | –C–N– stretch | Amines | Weak |
1162.4174 | –P–H– bending | Phosphine | Weak |
1077.3798 | –C–O– stretch | Ethers | Weak |
1033.4677 | C–N– stretch | Amines | Medium |
892.8850 | =C–H–out of plane | Alkanes | Medium |
828.7537 | –C–H–out of plane | Aromatic | Medium |
754.9412 | –S–OR– | Esters | Strong |
719.7369 | –C–H–out of plane (trans RCH=CHR) | Aromatic | Weak |