International Journal of Interdisciplinary Research
From: Extraction of Indigo dye from Couroupita guianensisand its application on cotton fabric
Peak no. | Position of1H | Chemical shift (ppm) | Comment |
---|---|---|---|
1 | H-1 | 8.083 | Sec. amide |
2 | H-6 | 6.966 | 1- benzene |
3 | H-7 | 7.338 | 1- benzene |
4 | H-8 | 7.145 | 1- benzene |
5 | H-9 | 8.916 | 1- benzene |
6 | H-5′ | 8.903 | 1- benzene |
7 | H-6′ | 7.025 | 1- benzene |
8 | H-7′ | 7.458 | 1- benzene |
9 | H-8′ | 6.884 | 1- benzene |
10 | H-1′ | 4.054 | Aromatic C-NH |