TABLE 2.
Intermediates formed in the degradation of IcdP by strain IcdP1.
| Rings | Product | Rt (min) | Ion fragments m/z | Identification or possible structure (TMS)a |
| 0 | P1 | 9.800 | 205, 177, 147, 73, 28 | 2-Hydroxyacetic acid |
| 0 | P6 | 16.134 | 247, 147, 73, 44, 28 | Succinic acid |
| 0 | P8 | 22.247 | 307, 217, 189, 147, 103, 73, 44, 28 | Butane-1,2,3,4-tetraol |
| 1 | P2 | 12.679 | 282, 233, 210, 163, 91, 73, 44, 28 | 3-(2,3-Dimethoxyphenyl)propanoic acid |
| 1 | P5 | 15.089 | 263, 207, 191, 96, 73, 28 | 4-(2-Hydroxyphenyl)-4-methylpentan-2-one |
| 2 | P7 | 17.627 | 190, 175, 176, 73, 44, 28 | Methyl 1-oxo-2,3-dihydro-1H-indene-2-carboxylate |
| 2 | P3 | 12.800 | 128, 44, 28 | Naphthalene |
| 2 | P4 | 14.897 | 185, 170, 142, 116, 96, 73, 28 | 2-Methoxy-1,1′-biphenyl |
| 4 | P9 | 22.937 | 264, 263, 207, 73, 44, 28 | 2,3-Dimethoxy-2,3-dihydrofluoranthene |
| 5 | P10 | 36.251 | 314, 73, 44, 28 | Cyclopenta[cd]pyrene-3,4-dicarboxylic acid |
| 6 | IcdPa | 46.538 | 276, 207, 138, 44, 28 | Indeno[1,2,3-cd]pyrene |
aIndeno[1,2,3-cd]pyrene standard.